D

Form Descriptions

This appendix describes the Virtuoso^® Schematic Editor forms, in alphabetical order.

Add Custom Pin

Use this form to create and place a new custom pin. It is accessed from the symbol editor using the Create – Custom Pin command. F

Pin Names specifies the names for the pins you want to add to your design and the order in which you want to add them. To add more than one pin name, use a space to separate the pin names. You can also use a bus expression to name an array of pins.

Direction contains a list of pin directions you can specify for the pins you want to add. switch is maintained solely for backward compatibility.

Bus Expansion specifies how the system interprets bus names.

off (default) interprets a bus name as one name and generates only one pin name that includes all the bits in the bus range. For example, for the name A<0:1>, the system generates only the pin A<0:1>.

on interprets a bus name as multiple names and generates a pin for each bit of a bus range that you specify in the Pin Names field. For example, for the name A<0:1>, the system generates labels A<0> and A<1>.

Draw Mode specifies the line entry method.

draws a straight line in any angle between two points.

begins an L90 shape with a horizontal line segment and alternates between horizontal and vertical.

begins an L90 shape with a vertical line segment and alternates between vertical and horizontal.

draws either a horizontal or vertical line segment first, then a 45-degree angle.

draws a 45-degree angle first, then either a horizontal or vertical line segment.

Lock Angle appears only when Draw Mode is set to .

any draws a line using any angle.

45 restricts cursor movement to 45-degree angles from the starting point.

Add Generic – VHDL Properties

Use this form to add a VHDL property. It is accessed by clicking Add on the VHDL Properties form.

Name specifies the generic name.

Type specifies the generic type.

Value (Optional) specifies a value for the generic.

Add Instance

Use this form to place multiple copies of a single instance in a schematic, based on a single lib/cell/view name instances. It is accessed using the Create – Instance command.

Library specifies the library that contains the instance.

Cell specifies the instance cell name.

View specifies the instance view name.

Names specifies the names of the components you want to add to the design.

Browse opens a browser. Use the Commands tab in the Editor Options form (Options – Editor command) to specify which browser, the Library Browser or Component Browser, the system opens.

Add Wire Stubs at:

all terminals creates wire stubs for all terminals in the cellview.

Environment Variable: allTerms

registered terminals only creates wire stubs only for those terminals that are registered with a net. See also the Register Net Name per Terminal form.

Displays the Net Name Registration form. For any terminal displayed in the left column, you can enter a net name in the opposite, right, column. Once you have then selected OK, the net names that have been entered are registered as the default net names for the corresponding terminals. Additionally, you can unregister existing registered terminals by ensuring the adjacent column is empty.

The registered net names will then be used when wire stubs are created using either the Create – Instance or the Create – Wire Stubs and Names commands, in the current session.

Environment Variable: addStubs

Array lets you create multiple copies of the specified instance in a single operation.

Rows specifies the number of rows.

Columns specifies the number of columns.

Rotate turns an object in 90-degree increments counterclockwise around the current reference point.

Sideways mirrors the object across an imaginary vertical line passing through the current reference point.

Upside Down mirrors the object across an imaginary horizontal line passing through the current reference point.

(Virtuoso RF Solution Option) Click to Edit Models button opens the Stackup Editor form which lets you store substrate geometry and material properties for a stackup instance. For more details, refer to Create Stackup.

Add Kanji Note

Use this form to generate a new kanji note symbol based on an existing Japanese EUC packed (multiple-width) formatted file. It is accessed using the Create – Note – Kanji Note command.

Kanji EUC File specifies the path for an existing EUC-packed formatted file. Leave this field blank if you are creating a new file.

File Editor Open starts the kanji text editor and creates a new EUC packed formatted file. The software automatically names the file by adding a string ( _kanji_ ) and a unique number to the current schematic name and by adding the .doc suffix. The software displays the new filename in the Kanji EUC File field.

Library Name specifies the library where you want the software to create the new kanji symbol. When you start the kanji text editor, the software automatically places the name of the current library in this field.

Cell Name specifies the cell where you want the software to create the new kanji symbol. When you start the kanji text editor, the software automatically generates a default cellname by appending the current schematic cellname with a string ( _kanji_ ) and a unique number.

The software stores the following display parameter settings as cell-level CDF parameters.

Scale Factor specifies a floating-point number for the character size. A value of 1.0 represents a character that is 50 database units high and 50 database units wide, which is the resolution used in the vector files. The default is 0.5.

Because of roundoff errors, a scale factor of .25 or less can make many characters unreadable.

Horizontal Spacing specifies the prescaled X distance between adjacent characters. The default value is 20 database units.

Text Direction specifies how the kanji text editor writes the text in the schematic.

horizontal causes the editor to write the text from left to right.

vertical causes the editor to write the text from top to bottom.

Vertical Spacing specifies the prescaled Y distance between adjacent characters. The default value is 20 database units.

Add New Property for Search

Use this form to add a property name to the search list. It is accessed by either the Schematic Select By Property or the Symbol Select By Property forms and selecting other in the Find cyclic field.

Property Name specifies a name for the property you want to add to the list of property names on the Schematic Select By Property form.

Add New Property to Find

Use this form to add a new property to search for in the Schematic Find form. It is accessed from the Schematic Find form by selecting other from the Search For field.

Property Name specifies a name of the property you want to add to the property name search list on the Schematic Find or Symbol Find form.

Add New Property to Find/Replace

Use this form to add a new property to find/replace in the Schematic Find form. It is accessed from the Schematic Find form by selecting other from the Search For field.

Property Name specifies a name of the property you want to add to the property name search list on the Schematic Replace or Symbol Replace form.

Add Property – Edit Object Properties

Use this form to add a new property. It is accessed by selecting Show option user and clicking Add on the Edit Cellview Properties form.

Name specifies a name for the new property.

Type specifies a property type.

Value specifies a value for the property.

To define most properties, you need to specify only the name, type, and value. However, when you specify string, int, or float as the type, one of the following fields appears on the form.

Choices appears when Type is set to string. If the string can have more than one value, type the possible values. Entries in this field must match an entry in the Value field.

Min and Max appear when Type is set to int or float. Specify a range for the minimum and maximum range for the integer or floating-point value.

Add Selection Box

Use this form to specify whether to draw a symbol selection box manually or automatically. It is accessed from the symbol editor using the Create – Selection Box command.

Use your mouse to indicate two opposite vertices of a rectangle that contains the objects you want to select, or click Automatic.

Automatic adds a selection box that contains all the objects that make up the symbol.

Add Symbol Label

Use this form to create a label for a symbol. It is accessed from the symbol editor using the Create – Label command.

Label specifies the label name. The system fills in this field automatically, depending on the option you select from the Label Choice cyclic field.

Font Height specifies the height of the text in user units. Default font height is 0.0625.

Environment variable: symbolLabelFontHeight

Label Choice contains a list of valid label types.

instance label is an NLPLabel used to display an instance name.

device annotate is an NLPLabel used to annotate the reference designator information from a package in the PCB layout onto the schematic. Historical.

logical label is an NLPLabel used to display the part name for PCB layout. Historical.

physical label is an NLPLabel used to display the userPartName or phyPartName property values for PCB layout. Historical.

pin name is a normalLabel used to display a specified pin name.

pin annotate is an NLPLabel used to annotate the corresponding pin number from a package in the PCB layout onto the schematic. Historical.

analog instance label is an ILLabel used to display various instance name/type information. The display can be configured using the Edit – Component Display command, which shows the label name as cdsName() where you type a name between the parentheses. The cdsName SKILL function is internally configured and evaluated by the schematic editor and is not intended for direct evaluation by the user. It displays label information (usually placed on the layer annotate drawing7) about the cell name or instance name. The cdsName function is attached to a cell symbol view when you use the Add Symbol Label form. The Annotation Setup form is used to control the display of this label type. The CDF Interpreted Labels Information sections of both the library and component are also used to configure what this label displays. The pertinent Interpreted Labels Information parameters are instDisplayMode and instNameType.

analog pin annotate is an ILLabel used to display various information about a specified pin or terminal. The default pin name display is set up in the CDF. You can change display options using the Edit – Component Display command, which shows the label name as cdsTerm(""), where the terminal name is enclosed with quotation marks. The cdsTerm SKILL function is internally configured and evaluated by the schematic editor and is not intended for direct evaluation by the user. It displays label information (usually placed on the layer annotate drawing8) about the pin or net attached to the pin. The cdsTerm function is attached to a cell symbol view when you use the Add Symbol Label form. The Annotation Setup form is used to control the display of this label type. The CDF Interpreted Labels Information sections of both the library and component are also used to configure what this label displays. The pertinent Interpreted Labels Information parameters are termDisplayMode, termSimType, and netNameType.

analog device annotate is an ILLabel used to annotate various device or simulation-specific data onto the schematic. This lets you display component/model/operating point data which you can configure using the Edit – Component Display command, which shows the label name as cdsParam(1), numbered sequentially starting with 1. The specific data for each type that can be annotated is specified in the cell CDF. Multiple device annotation parameters should be entered with increasing numbers between the parentheses to indicate which parameter in the list specified in the CDF to display. The cdsParam function is internally configured and evaluated by the schematic editor and is not intended for direct evaluation by the user. It displays label information (usually placed on the layer annotate drawing) about the parameter values or backannotated parameter values. The cdsParam function is attached to a cell symbol view when you use the Add Symbol Label form. The Annotation Setup form is used to control the display of this label type. The CDF Interpreted Labels Information sections of both the library and component are also used to configure what this label displays. The pertinent Interpreted Labels Information parameters are paramDisplayMode, paramLabelSet, opPointLabelSet, modelLabelSet, paramEvaluate, and paramSimType.

Environment variable: symbolLabelChoiceText

Font Style specifies the font the system uses to display the label.

Environment variable: symbolLabelFontStyle

Label Type specifies how the system displays the label in the design.

normalLabel displays the label as a text string.

NLPLabel interprets the label according to netlisting rules and displays the result.

ILLabel interprets the label as a SKILL expression and displays the result.

Environment variable: symbolLabelType

Justification specifies the position of the cursor with respect to the text.

Environment variable: symbolLabelJustify

Rotate turns the note text counterclockwise in 90-degree increments around the reference point.

Add Symbol Shape

Use this form to create your own symbols. It is accessed from the symbol editor using the Create – Shape command.

The Add Symbol Shape form expands and contracts depending on which Shape option you select as the options available vary depending on the shape currently selected.

Shape specifies a shape you can add to your design. You can select Line, Rectangle, Polygon, Circle, Ellipse or Arc.

Environment variable: symbolShape

Fill Style determines whether the shape is filled or not.

outline draws just the border.

filled fills in the specified shape.

Environment variable: symbolShapeFillStyle

Line Width specifies the width of the line you want to add.

narrow draws a line using the default setting of 0.0625 user units.

wide lets you edit the default width.

Environment variable: shapeLineWidth

Environment variable: shapeLineType

Draw Mode specifies the line entry method.

draws a straight line in any angle between two points.

begins an L90 shape with a horizontal line segment and alternates between horizontal and vertical.

begins an L90 shape with a vertical line segment and alternates between vertical and horizontal.

draws either a horizontal or vertical line segment first, then a 45-degree angle.

draws a 45-degree angle first, then either a horizontal or vertical line segment.

Environment variable: drawMode

Lock Angle appears only when Draw Mode is set to .

any draws a line using any angle.

45 restricts cursor movement to 45-degree angles from the starting point.

Add Wire

Use this form to change the characteristics of wires. It is accessed using Create – Wire (narrow) or Create – Wire (wide).

Draw Mode specifies the wire entry method.

route (default) creates a route between two points.

draws a straight line in any angle between two points.

begins an L90 shape with a horizontal line segment and alternates between horizontal and vertical.

begins an L90 shape with a vertical line segment and alternates between vertical and horizontal.

draws either a horizontal or vertical line segment first, then a 45-degree angle.

draws a 45-degree angle first, then either a horizontal or vertical line segment.

Environment Variable: drawModeRoute

Route Method specifies how the system routes wires. This option appears when you set Draw Mode to route.

full draws complex lines consisting of right angles and up to three segments to complete the connection wire.

direct draws a straight line between two points.

flight draws a dashed, straight line between two points.

Environment Variable: defWideWireWidth

Lock Angle appears when Draw Mode is set to . Use this option to control the cursor movement.

any (default) lets you drag your cursor along any angle.

45 limits cursor movement to 45-degree angles.

Width specifies the wire width in user units. The default values are 0 (zero) for a narrow wire and 0.0625 for a wide wire.

Environment Variable: defWideWireWidth

Color specifies the color of the wire.

Line Style specifies the line style of the wire.

Annotation Setup

Use this form to change the annotation settings of the design components. It can be accessed using the View – Annotations – Setup command.

Simulation Data Directory sets the simulation data directory for annotation.

Library lists all the libraries in the design.

Cell lists all the cells within the selected library in the design.

Instance lists all the instances in the selected cell in the design.

Selected List lists all the instance names of the type selected from the Instance drop-down list.

Label displays the type of ilLabel present in the design for the selected instance.

Display Mode displays the available display modes for the ilLabels.

You can select the operating point parameter, component parameter, model parameter, instance name, cell name, pin name, net name, voltage, and current options from the drop-down list depending upon the selected ilLabel.

Expression lists the expressions for the parameter labels.

Annotate displays or hide annotations on the schematic.

Balloons displays or hide annotations on annotation balloons.

Build Inherited View List

Use this form to select the appropriate views and constants to add to the Inherited View List list box. It is accessed by switching the As Is button off in the Inherited View List field on the Set Instance Binding form.

Available Constants/Views provides a selection list of available constants and views. The list is made up of constants that have been defined for this design and the union of all views of the selected instances.

Arrow keys move the selected elements into and out of the Inherited View List box.

Inherited View List specifies the contents of the new Inherited View List box that you are creating.

Add lets you type in other views to add.

Up moves the selected view in the Inherited View List box up one position in the list.

Down moves the selected view in the Inherited View List box down one position in the list.

Cellview From Cellview

Use this form to create a new cellview from an existing cellview. It is accessed using the Create – Cellview – From Cellview command.

Library Name specifies the library that contains the source cellview. The default library name is the current library.

Cell Name specifies the cell name. The default cell name is the current cell.

From View Name contains a list of the existing views for the source cellview.

To View Name specifies the view name of the cellview the software generates when you click OK or Apply. The Tool / Data Type setting initializes this field. You can edit this field.

Tool / Data Type specifies the type of cellview to be created.

Browse opens the Library Browser. You can use the browser to select the library, cell, and view names. The system automatically fills in the form with the information you specify in the browser.

Display Cellview when enabled, causes the software to open the newly created cellview in an editor window when you complete the cellview generation process.

Environment Variable: cvDisplay

Edit Options when enabled and on completion of the Cellview From Cellview form, displays the Symbol Generation Options subform. Use this form to specify other options.

Environment Variable: createCvOptions

Cellview From Instance

Use this form to create a cellview from an instance using the command Create – Cellview – From Instance.

View Name specifies the type of cellview the software generates when you click OK. The Tool / Data Type setting initializes this field.

Tool / Data Type specifies the type of cellview to be created.

Display Cellview , when enabled (default), causes the system to open the newly created cellview in an editor window when you complete the cellview generation process.

Cellview From Pin List

Use this form to create a cellview from existing pins, such as those from the basic pin library, or you can create the cellview from new pin names. It is accessed using the Create – Cellview – From Pin List command.

Input Pins specifies an input pin list either from any library or expressed as a new pin name.

Output Pins specifies an output pin list either from any library or expressed as a new pin name.

IO Pins specifies an input/output pin list from any library or expressed as a new pin name.

Switch Pins specifies a switch level pin list from any library or expressed as a new pin name.

Jumper Pins specifies a jumper pin list from any library or expressed as a new pin name.

Tristate Pins specifies a tristate pin list from any library or expressed as a new pin name.

Unused Pins specifies an unused pin list from any library or expressed as a new pin name.

Library Name specifies the library name for the generated cellview. The default library name is the current library.

Cell Name specifies the cell name for the generated cellview.

View Name specifies the type of cellview the software generates. The Tool / Data Type setting initializes this field.

Tool / Data Type specifies the type of cellview to be created; for example, Schematic Editor – Symbol.

Browse opens a Library Browser. Use the browser to select the library name, cell name, and view name. The system automatically fills in the form with the information you select in the browser.

Display Cellview , when enabled, causes the software to open the newly created cellview in an editor window when you complete the cellview generation process.

Environment Variable: cvDisplay

Edit Options , when enabled, displays a subform when you complete the Cellview From Pin List form. Use the subform to specify other options.

Environment Variable: createCvOptions

Cellviews with Evaluated Net Expression Name

Use this form to view a full list of cellviews that contain net expressions that evaluate to the selected evaluated name. It is accessed using the Edit – Net Expression – Evaluated Names command and selecting List Cellviews with Selected Evaluated Name.

Cellview shows the full list of cellviews that contain net expressions that evaluate to the selected evaluated name.

Property Name shows the property name in the list of cellviews.

Default Value shows the default value (usually a global name) in the list of cellviews.

Number of Occurrences shows the number of occurrence paths down the hierarchy to a cellview which has a net expression that evaluates to the specified name.

Change Sheet Border Size

Use this form to change the existing size and type of a schematic border, using the Edit – Sheet Size command.

Border Size specifies the new sheet size to use in the schematic.

A changes the sheet to an A-size sheet with a vertical orientation, as it would appear in a book.

none deletes an existing sheet border; otherwise, this option does not affect the sheet. When you select this option, the system ignores the Border Type field.

Border Type specifies the sheet border type.

basic (default) changes the sheet to include global and sheet-specific border titles in the title block.

continue changes the sheet to include sheet-specific border titles in the title block.

Check Hierarchy

Use this form to define the options to be run when you choose the Check – Hierarchy command.

Process specifies which schematics the system checks.

every schematic checks all schematics in the hierarchy.

only those that need it (default) checks only those schematics that have been updated since the last time you saved your design.

Environment variable: checkAlways

Referenced libraries specifies whether the hierarchy check continues outside of the current library.

check activates the text field so you can edit the list. When you click Apply or OK, the system checks the libraries displayed in the field.

do not check (default) checks only the current library; the libraries that appear in the text field are not checked.

Environment variables: libList, spanLib

Open for specifies the mode in which the cellview is opened for the hierarchy check.

auto (default) checks the hierarchy in the same mode as the top cellview.

edit checks the hierarchy in editable mode.

read checks the hierarchy in read-only mode.

Environment variable: checkHierOpenMode

Save schematics specifies whether the system saves schematics when the check operation is complete.

yes (default) saves the checked schematics.

no does not save the checked schematics.

those with errors appears only when you select yes. This option specifies how the system handles schematics that contain errors.

Ask Me (default) prompts you to confirm which of the displayed schematics you want to save.

No Save does not save any schematics that contain errors.

Save saves all schematics even when they contain errors.

Environment variable: checkHierSave

View Name List displays a scrollable list of views that is used to traverse the hierarchy.

When the schematic is in the context of a design configuration or a hierarchy configuration, the following two fields appear:

Using configuration displays the configuration name using the format lib cell view.

Starting from displays the name of the top level cellview using the format lib cell view.

Check Label Attachment

Use this form to highlight the association between a label and its owning object (that is, a wire or an instance). It is accessed using the Check – Label Attachment command.

Show labels of controls which labels that you want to check as being attached to particular objects on the canvas.

wire displays wire label attachments on the canvas.

instance displays instance label attachments on the canvas.

both displays both wire and label attachments on the canvas.

none hides all label attachments on the canvas.

Close closes the Check Label Attachment form and automatically removes the label attachments. This action will also reset the selection to none.

Refresh updates the label display on the canvas. This can useful, for example, if objects have been moved or deleted while the Check Label Attachment form is still on display.

Component Browser

Use this form to add component instances from a library. If the Add Instance Browser Type option on the Editor Options form, is set to component, this form is accessed using the Create – Instance command.

Library specifies the library that contains the component you want to add.

Flatten controls whether the list box displays cell categories (default; turned off) or cells (turned on) contained in the specified library. The display changes when you toggle this option.

Filter specifies a text string that limits the list box display to categories or cells that contain the text string. The display changes when you click the Library option.

Remove appears only when you use the Commands – Add Library command to expand the form. This option lets you remove the associated library from the form.

The list box displays the categories or cells contained in the library (see Flatten).

Component Browser Preferences

Use this form to specify your preference on whether the Component Browser or Add Instance form is opened when the Create – Instance command is run. This form is accessed using the Commands – Preferences command.

Browser Opens with the Invocation of when turned on (default), the system opens the Component Browser when you click the Browse button on the Add Instance form.

Status of Browser After Closing defines what happens to the Component Browser when you close the Add Instance form.

icon (default) collapses the window into an icon.

open leaves the Component Browser window open.

closed closes the Component Browser window.

Copy

Use this form to copy an object. It is accessed using the Edit – Copy command.

Snap Mode specifies the angles along which you can move copied objects within the cellview.

anyAngle (default) lets you move the copied objects along any angle.

diagonal restricts the movement of copied objects to points along 45-degree, 90-degree, and 180-degree angles from the current location.

orthogonal restricts the movement of copied objects to points along the X and Y axes from the current location.

Array lets you create multiple copies of a selected object in a single operation and specify the dimensions of the array.

Rows specifies the number of rows.

Columns specifies the number of columns.

Include Design Intent lets you specify whether the design intent associated with the object is also included in the copy.

Environment variable: copyDesignIntent

Rotate turns an object in 90-degree increments counterclockwise around the current reference point.

Sideways mirrors the object across an imaginary vertical line passing through the current reference point.

Upside Down mirrors the object across an imaginary horizontal line passing through the current reference point.

Create a Mapping Schematic Step 1 of 2

Use this form to create a mapping schematic so you can switch between design tasks without the need to modify existing cells or the design text file. It is accessed using the command Create – Mapping Schematic.

Lower Level Cellview Specifies the lower-level library, cell and view names.

Referenced Symbol:

Library Specifies the library that contains the cell and the view that are considered as the lower-level cellview.

Cell Specifies the cell that contains the lower-level cellview.

View Specifies the lower-level cellview. By default, you can only specify the schematicSymbol views in this form. However, you can set the browserShowSchViews to t for specifying the schematicSymbol and schematic views in the Lower Level Cellview and Upper Level Cellview.

Upper Level Cellview Specifies the pins of the lower-level cellview, that are to be connected to the pins in the upper-level cellview.

Referenced Symbol:

Library Specifies the library that contains the cell and the view that are to be considered as the upper-level cellview.

The upper-level cellview settings default to the current library when the Create – Mapping Schematic option was selected.

Cell Specifies the cell that contains the upper-level cellview.

View Specifies the upper-level cellview.

Mapping Schematic Specifies the mapping schematic view name.

View Name Specifies the mapping schematic view name. The default view name is of the form <lowerCell_cellName>. This can be changed as required.

Environment variable: mapCvMappingSchViewName

Next Displays the Create a Mapping Schematic Step 2 of 2 form. This button becomes available only after you have specified valid library, cell, and view names for both the lower- and upper-level cellview references.

Create a Mapping Schematic Step 2 of 2

Use this form to map the unmapped nets in the Lower Level Cellview (specified in Step 1) to the unmapped nets in the Upper Level Cellview (also specified in step 1). It is accessed by clicking Next on the Create a Mapping Schematic Step 1 of 2 form.

Unmapped Nets Lists the current unmapped nets in each of the lower- and upper-level cellviews.

Mapped Nets Lists those nets that are mapped between the lower and upper-level cellviews.

Auto-Map Automatically maps the nets listed under Unmapped Nets, displaying the newly mapped nets under Mapped Nets.

Map Maps the lower- and upper-cellview nets that are currently selected under Unmapped Nets. This button is available only when two nets that can be mapped are selected.

Clear De-selects any maps that are currently selected under Unmapped Nets.

Other Setup:

Specific options in the Other Setup group box become available when a pin in either of the two symbol views is selected. Moreover, the options become available based on the type of pins that are currently selected.

If pins in both the lower- and upper-symbol views are currently selected then all options are disabled.

Unconnected If selected, this option leaves the selected pin unconnected when Add is performed. This ensures that the pin is connected to a noConn instance.

If an iterated pin is connected to a noConn symbol, then the noConn instance that is connected to that iterated pin has the same width as the iterated pin.

Connected To If selected, connects the selected pin to the specified net name.

If an illegal net name has been entered, a warning message will be displayed when Add is subsequently selected. Additionally, if you select Add while this field is blank, but selected, no action will occur.

Net Expression If selected, connects the selected lower-level symbol pin to a wire with a net expression that has the specified Property Name and Default Global Net, as explained below.

This option is only active when a single-bit pin is selected in the lower level symbol.

Property Name Specifies the net expression property name.

Default Global Net Specifies the net expression default global net name.

Net Set If selected, the lower-level instance has a netSet property associated with it, with the overridden net being specified in the Override Net field.

This option is active only when a pin with a net expression is selected in the lower-level symbol.

Add Maps nets based on the specifications listed above and adds them to the Mapped Nets list.

Unmap Removes the mapping between the nets selected in the Mapped Nets list, and then displays the unmapped nets under Unmapped Nets.

File Specifies the location of the text file that contains the mapped net settings. You can do both, load the settings from a file or save the settings to a file.

Clicking the browse button locates the file from which you want to load the settings. The files are listed in the Choose a File form.

Load From Loads mapped net settings from the text file listed in the File field.

Save To Saves mapped net settings to the text file listed in the File field.

Create Block

Use this form to create multiple blocks, each with a different lib/cell/view name. It is accessed using the Create – Block command.

Library specifies the library in which you want to add a new block. The default is the library for the current design.

Cells specifies the cell name of the block you want to create. You can specify multiple cell names by using a space to separate each name. The Cells and Names fields must match in number. If there are more entries in Cells than in Names, the system assigns a name for each. If there are more entries in Names than in Cells, the system ignores the extra names.

View specifies the view you want to create. The default is symbol.

Names specifies the name of the cell. Only one name (instance) can be entered for each cell. There is a one-to-one correspondence between the entries in the Cells and the Names fields. You can specify multiple cell names by using a space to separate each name. The Cells and Names fields must match in number. If there are more entries in Cells than in Names, the system assigns a name for each. If there are more entries in Names than in Cells, the system ignores the extra names.

Pin Name Prefix specifies a name that the system uses to name all the pins that the system creates automatically when you connect wires to this block. The default is pin.

Environment variable: pinNameSeed

Block Shape lists a drawing option and a predefined set of presized blocks that you can add to the design.

freeform prompts you to drag your cursor between two points to specify the opposite corners of a rectangle. The system draws the rectangle as you drag the cursor.

The default set of presized blocks includes small, medium, large, 2 by 1, 1 by 2, alu, mux4, and mux8.

Create Cellview Dialog Box – Replace or Modify

Use this dialog box to replace or modify the existing cellview. It is displayed when creating a cellview using the Cellview From Cellview form if the symbol cellview to be created already exists.

Replace does the following to a cellview:

Discards any modifications you may have made to that cellview
Creates only the pins, properties, selection box, labels, and other graphics; all schematic instances, schematic wires, and HDL body text are lost
May alter the position of pins in the new symbol cellview

Modify does the following to a symbol cellview:

Automatically edits the cellview with a minimal amount of changes to the current pin locations, graphics, and properties within the symbol cellview
Deletes pins that are no longer needed
Adds pins that do not yet exist in the new cellview
Pins are added near the bottom of the cellview. Use the symbol editor to reposition these new pins and to adjust any symbol graphics. The system determines attributes of the new pins by the currently active TSG template file.
Adds or updates cellview properties and terminal properties
Annotates the changes that were made in note format at the bottom of the cellview and in the Command Interpreter Window (CIW)
Does not delete cellview or terminal properties

Create Net Expression

Use this form to add a net expression label to a wire. It is accessed using the Create – Net Expression command.

Property Name specifies the name of the property that can be used to override the default global signal; in other words, the name of the property whose value redefines the name of the net. The system evaluating the expression searches for the property that has this name to get the value to inherit for the net.

Default Net Name specifies the global signal name to be used for the net associated with this net expression label. The system uses the default net name—for example vdd!, gnd!, or vss!—when a netSet property has not been found on an instance of the current hierarchical path. The name must specify a global single-bit value.

Derive from property name check box enables, when selected, the Default Net Name field to be automatically seeded based on the Property Name specified. By default, Derive from property name is deselected.

Font specifies the appearance of the net expression label text in the design.

Height specifies the height of the net expression label text in user units. The default font height is 0.0625.

Style specifies the font used to display the net expression label.

Justification specifies the position of the cursor with respect to the text.

Entry Style specifies the mechanism for placing the net expression label on a wire or pin.

fixed offset automatically positions the net expression label at a specified distance from the wire or pin.

manual requires you to place the net expression label at a grid location on or near the wire or pin.

Horizontal Objects specifies position, offset, and rotation angle for the net expression labels in horizontal objects.

Vertical Objects specifies position, offset, and rotation angle for the net expression labels in vertical objects.

Rotation turns the label text counterclockwise in 90-degree increments around the reference point.

You can edit a net expression label in the Edit Object Properties – Net Expression (Edit – Properties – Objects).

Create Note Shape

Use this form to add an annotation within a defined shape on your design. It is accessed using the Create – Note – Shape command.

Shape specifies a shape you can add to your design to outline the note text. The shape options available are:

- line
- rectangle
- polygon
- arc
- ellipse
- circle

Environment variable: noteShape

The options available depend on the Shape option you select and the form expands and contracts to accommodate this.

Dashed line check box specifies the line style used to draw the shape. When selected, a dashed line replaces the default solid line.

Environment variable: noteShapeLineStyle

Wide line check box specifies if a line setting wider than the default 0.0625 user units is to be used. This check box is displayed only when the Shape is set to line. When selected, the Width option is enabled for you to specify the actual width of line to be used.

Environment variable: shapeLineWidth

Width specifies the width of the line used to draw the shape and is displayed only when the Shape is set to line and the Wide line check box has been selected. Enter or select the width you require.

Draw Mode appears only when the Shape is set to line and polygon. It specifies the line entry method.

draws a straight line in any angle between two points.

draws two line shapes. The first is horizontal; the second is vertical.

draws two line shapes. The first is vertical; the second is horizontal.

draws either a horizontal or vertical line segment first, then a 45-degree angle.

draws a 45-degree angle first, then either a horizontal or vertical line segment.

Lock to 45 degrees appears only when Draw Mode is set to . It toggles between drawing a wire using any angle (default) and restricting cursor movement to 45-degree angles from the starting point.

Environment variable: drawMode

Text specifies the text to be displayed with the shape. You can either type the text or use the File option to load the text from a file. You can edit the text in this window, but the Font options specified will only be visible when the Note Shape is created on the design.

See Default Keybindings for Text Fields in the Virtuoso Design Environment User Guide.

File copies in a file and displays the file contents in the Text field. You can either enter the filename or use the Browse (...) button to display the Choose a File form, where you can select the file required. This action overwrites any text you entered in the text box. To read in the file, specify the path to the text file, click Read File. When the file contains characters that cannot be displayed, the system issues a warning and removes the characters before copying in the file.

Font specifies the appearance of the note text in the design. Any changes will only be visible when the Note Shape text is created on the design:

Height specifies the height of the text in user units. The default font height is 0.0625.

Style specifies the font used to display text.

Justification specifies the position of the cursor with respect to the text.

Overbar check box is a display option. You use this option to specify whether the software displays an overbar over the note text. When this option is disabled (default), the software displays underscore characters ( _ ) in the note text as part of the note text string. When this option is enabled, the software interprets underscore characters ( _ ) in the note text as toggle switches that control where overbars begin and end. Overbars appear above the property label, as shown in the examples.

- The note text _abcde puts an overbar over all 5 letters.
- The note text ab_cde puts an overbar over only cde.
- The note text _abc_de puts an overbar over only abc.
- The note text ab_cd_ef_gh_ij puts an overbar over only cd and gh.
  To avoid confusion when text, labels, or names contain underscore characters, Cadence does not recommend that you enable the Overbar display option. It is provided only for backward compatibility with prior releases.

Create Note Text

Use this form to add an annotation on your design. It is accessed using the Create – Note – Text command.

Text specifies the text to be displayed with the note. You can either type the text or use the File option to load the text from a file. You can edit the text in this window, but the Font options specified will only be visible when the note text is created on the design.

See Default Keybindings for Text Fields in the Virtuoso Design Environment User Guide.

Font specifies the appearance of the note text in the design. Any changes will only be visible when the text is created on the design:

Height specifies the height of the text in user units. The default font height is 0.0625.

Environment variable: noteFontHeight

Style specifies the font used to display the text.

Environment variable: noteFontStyle

Justification specifies the position of the cursor with respect to the text.

Environment variable: noteJustify

Drafting maintains the normal orientation of the text as you flip a note 180-degrees around a reference point. When this option is disabled, rotated text appears upside down. The default is for this option to be on.

- The note text _abcde puts an overbar over all 5 letters.
- The note text ab_cde puts an overbar over only cde.
- The note text _abc_de puts an overbar over only abc.
- The note text ab_cd_ef_gh_ij puts an overbar over only cd and gh.
  To avoid confusion when text, labels, or names contain underscore characters, Cadence does not recommend that you enable the Overbar display option. It is provided only for backward compatibility with prior releases.

Rotation turns the note in 90-degree or 180-degree increments around the reference point.

Rotate Left turns the note 90-degrees anti-clockwise.

Rotate Right turns the note 90-degrees clockwise.

Flip Vertical flips the note vertically180-degrees.

Flip Horizontal flips the note horizontally 180-degrees.

Create Patchcord

Use this form to add a patch cord which establishes aliases between the signals of two different nets. It is accessed using the Create – Patchcord command.

Add net stubs automatically adds two net stubs when adding a patch cord symbol. When disabled, a simple patch cord instance will be created.

Indexing

ascending (only enabled) allows for a single prefix to be entered, and the alias net will be set up as a bus which depends upon the number of nets entered in the Design Nets field. The preview option to the right of the Alias Nets/Prefix option provides an example of what this bus will appear as.

auto and ascending (both enabled) instructs that the alias bus will display as alias<0:3>, assuming there are four design nets, otherwise it will display as alias<3:0>.

Alias Nets/Prefix specifies a single string (if auto indexing is enabled) that will provide the name to be used for the alias net or bus. If auto indexing is disabled, then this can be one or more, comma separated, net names. The number of net names must however match the number of nets entered in the Design Nets field.

Design Nets displays a list of comma separated net or bus names, for example “in, x, cntrl, data<0:3>”.

Style specifies the format of the patch cord to be placed. You can select between straight, which displays a horizontal layout, with both nets and patch cords in a straight line, or curved, where the layout is a horseshoe shape, with a vertical patch cord and horizontal nets. The Preview field, below the Style field, graphically illustrates your current selection.

Bundle Display lets you select the bundle display mode, horizontal or vertical, for the Design Nets if the Add net stubs option is enabled and the design net being placed is a bundle. The Bundle Display option will be disabled if the Design Nets option is empty or if the design net is not a bundle.

A bundle is a wire or pin name consisting of simple names separated by a comma; for example, S,R.

Create Pin – Schematic

Use this form to create a schematic pin or an offsheet pin,. It is accessed using the Create – Pin command.

Names specifies the names for the pins you want to add to the design and the order in which you want to place them. To add more than one pin name, use a space to separate each name. When you enable the Expand Busses option, you can use a bus expression to name an array of pins. You need not specify the name if you have enabled automatic pin naming by using the createPinAutoNameFromNamedNet environment variable.

If setting supply and ground sensitivity, the pin name should be a single-bit terminal or single-bit terminal with vector elements. If the name is not a single-bit, a signal type can only be added if the Expand Busses option is also selected which will apply to the array of pins.

Direction contains a list of the directions you can specify for the pins you want to add. switch is maintained solely for backward compatibility: Cadence discourages its use. The default is input.

Usage contains a list of the pin types you can specify for the pins you want to add. The default is schematic. Use offsheet only when you are going to connect the added pins to another sheet in a multisheet schematic.

Signal Type specifies the new pin’s signal type. Signal type (sigType) setting is important in the areas of design verification, consistency checking for mixed-signal designs, and to also set routing constraints. Signal types to select from are analog, clock, ground, power, reset, scan, signal (default), tieHi, tieLo, tieOff, optical, singleModeOptical, or multiModeOptical. Refer to Defining Signal Types.

Expand busses check box determines how the schematic editor interprets bus names.

When deselected (default) a bus name is interpreted as a single-bit name and a single pin that includes all the bits in the bus range is generated. For example, for the name A<0:1>, a pin called A<0:1> is generated.

When selected a bus name is interpreted as multiple-bit name and a pin is generated for each bit of a bus range that you specify in the Names field. For example, for the pin A<0:1>, pins called A<0> and A<1> are generated.

This option must be selected when using multiple-bit names and signal sensitivity is required. For more details, see How to Set Supply and Ground Sensitivity.

Place multiple pins check box determines whether you can place multiple pins automatically in one operation.

When deselected (default) requires you to point and click to identify the location for each pin.

When selected prompts you to point and click to specify the first and second pin locations. The system uses the distance between these two points as a basis for automatically placing any remaining pins.

Net Expression section

Attach to pin check box allows you to add a net expression to the pin. The Property Name and Default Net Name fields will be automatically seeded, based on the current Names, if the Derive from pin name option is enabled.

Derive from pin name check box enables the Property Name and Default Net Name fields on the Create Pin form to be automatically seeded with values derived from the Names currently being added. These values will continue to update if multiple pins are added simultaneously.

Property Name specifies the name of the netSet property that can be used to override the default global signal; in other words, the name of the property whose value redefines the name of the net. The system evaluating the expression searches for the property that has this name to get the value to inherit for the net.

Default Net Name specifies the global signal name to be used for the net associated with this label. The system uses the default net name—for example vdd!, gnd!, or vss!—when a netSet property has not been found on an instance of the current hierarchical path. The name must specify a global single-bit value.

Font section

Height specifies the height of the label text in user units.

Style specifies the font used to display the label.

Justification specifies the alignment of the label. Alignments to select from are automatic, lowerLeft, centerLeft, upperLeft, lowerCenter, centerCenter, upperCenter, lowerRight, centerRight, or upperRight.

Supply Sensitivity section determines how the values entered for power and ground terminals gets attached to the specified pins’ terminals.

Attach To drop-down list box lists the options to choose from while making the terminals of the next pin sensitive to the power or ground terminals. For more details, see Setting Supply and Ground Sensitivity (Schematic Window).

Both the terminal of the next pin will be made sensitive to any specified power and ground terminals.

Power terminal of the next pin will be made sensitive only to any specified power terminals.

Ground terminal of the next pin will be made sensitive only to any specified ground terminals.

None of the terminals of the next pin will be made sensitive to neither power nor ground terminals, specified or otherwise.

Power Pin type in, or select from the drop-down list (which includes all the single-bit terminals in the cellview), the names of the terminals that would make the effected pins’ terminals sensitive to the entered power terminals. By default, the field shows None before terminals are added to the cellview.

Ground Pin type in, or select from the drop-down list (which includes all the single-bit terminals in the cellview), the names of the terminals that would make the effected pins’ terminals sensitive to the entered ground terminals. By default, the field shows None before terminals are added to the cellview.

Rotation section

Rotate Left turns the pin in 90-degree increments counterclockwise around the reference point.

Rotate Right turns the pin in 90-degree increments clockwise around the reference point.

Flip Horizontal mirrors the pin across an imaginary vertical line passing through the reference point.

Flip Vertical mirrors the pin across an imaginary horizontal line passing through the reference point.

Create Pin – Symbol

Use this form to create a symbol pin. It is accessed from the symbol editor using the Create – Pin command.

Names specifies the names for the pins you want to add to the design and the order in which you want to place them. To add more than one pin name, use a space to separate each name. If you enable the Expand Busses option, you can use a bus expression to name an array of pins.

If setting supply and ground sensitivity, the pin name should be a single-bit terminal or single-bit terminal with vector elements. If the name is not a single-bit, a signal type can only be added if the Expand busses option is also selected which will apply to the array of pins.

Direction contains a list of pin directions you can specify for the pins you want to add. switch is maintained solely for backward compatibility.

Bus Expansion specifies how the system interprets bus names.

off (default) interprets a bus name as one name and generates only one pin that includes all the bits in the bus range. For example, for the name A<0:1>, the system generates only the pin A<0:1>.

on interprets a bus name as multiple names and generates a pin for each bit of a bus range that you specify in the Pin Names field. For example, for the pin A<0:1>, the system generates pins A<0> and A<1>.

Type contains a list of the valid pin types.

Environment variable: symbolPinUsage

Signal Type specifies the new pin’s signal type. Signal type (sigType) setting is important in the areas of design verification, consistency checking for mixed-signal designs, and to also set routing constraints. Signal types to select from are analog, clock, ground, power, reset, scan, signal, tieHi, tieLo, tieOff, optical, singleModeOptical, or multiModeOptical. Refer to Defining Signal Types.

Expand busses check box determines how the system interprets bus names.

When deselected (default) causes the system to interpret a bus name as a single name and generate a single pin that includes all the bits in the bus range. For example, for the name A<0:1>, the system generates only the pin A<0:1>.

When selected causes the system to interpret a bus name as multiple names and generate a pin for each bit of a bus range that you specify in the Names field. For example, for the pin A<0:1>, the system generates pins A<0> and A<1>.

This option must be selected when using multiple-bit names and signal sensitivity is required. For more details, see How to Set Supply and Ground Sensitivity.

Place multiple pins check box determines whether you can place multiple pins automatically in one operation.

When deselected (default) requires you to point and click to identify the location for each pin.

Label section

Location specifies where the pin name (pin label) appears in respect to the pin.

Environment variable: symbolPinLocate

Offset specifies how far, in user units, the pin name (pin label) is from the pin.

Environment variable: symbolPinIncrCount

Supply Sensitivity section determines how the values entered for power and ground terminals gets attached to the specified pins’ terminals.

Attach To drop-down list box lists the options to choose from while making the terminals of the next pin sensitive to the power or ground terminals.

Both the terminal of the next pin will be made sensitive to any specified power and ground terminals.

Power terminal of the next pin will be made sensitive only to any specified power terminals.

Ground terminal of the next pin will be made sensitive only to any specified ground terminals.

None of the terminals of the next pin will be made sensitive to neither power nor ground terminals, specified or otherwise.

Rotate Left turns the pin in 90-degree increments counterclockwise around the reference point.

Rotate Right turns the pin in 90-degree increments clockwise around the reference point.

Flip Horizontal mirrors the pin across an imaginary vertical line passing through the reference point.

Flip Vertical mirrors the pin across an imaginary horizontal line passing through the reference point.

Create Schematic

Use this form to specify whether a single or multisheet schematic is created. It is displayed when creating a cellview from another cellview and you specify schematic in the Tool / Data Type field.

Schematic Type determines which type of schematic you create.

single creates a single sheet schematic.

multi-sheet creates a multisheet schematic and opens the first page so you can begin editing.

Environment variable: transToSheetType

Size specifies the size of the sheet border for the new schematic. The possible values are A through F, A Book, and none.

Type specifies the type of sheet border.

basic specifies global and sheet-specific border titles. This option creates a template only. To fill in the fields in the title box, use the Edit – Sheet Title command.

continue specifies a continuation border, which contains only specific border titles such as the sheet size and number.

Create Schematic Sheet

Use this form to convert a single-sheet schematic to a multisheet schematic, using the Create – Multisheet command.

Number specifies the sheet number that the schematic editor creates when you click Apply or OK. The default sheet number is the next sheet number in the multisheet sequence. Valid choices are integers greater than zero (0).

Size specifies which sheet border size the editor uses for the new sheet. The valid choices are A through F, A Book, and none.

A Book creates an A-size sheet with a vertical orientation, as it would appear in a book.

none creates a new sheet without a sheet border. The system ignores the Type option when you select this option.

Type specifies the sheet border type.

basic (default) specifies a template that contains global and sheet-specific border titles. You use the Schematic Title Block Properties form to fill in the fields in the title box.

continue specifies the same sheet size and border titles as those used for the schematic in the current design window.

Create Wire Name

Use this form to add a wire name. It is accessed using the Create – Wire Name command.

Names specifies one or more names for wires. You can specify multiple names by separating each name with a space. You can also use a bus expression to name an array of wire names.

Expand bus names specifies how the system interprets bus names.

Deselected (default) interprets the bus name as a single name and generates a single name that includes all the bits in the bus range. For example, for the name A<0:1>, the system generates only the name A<0:1>.

Selected interprets the bus name as multiple names and generates a name for each bit of a bus range that you specify in the Names field. For example, for the name A<0:1>, the system generates names A<0> and A<1>.

Attach to multiple wires specifies how the system interprets bus names.

Deselected (default) requires you to point and click to identify each wire name location.

Selected lets you drag your mouse between two points to designate the wires that you want the system to name automatically.

Create net alias labels defines the purpose of the wire name.

Deselected (default) does not specify any net alias lables to the wire name.

Selected assigns the wire name to the corresponding wire and defines the wire name as an alternative name (usually shorter or more descriptive) for the wire.

Displays bundles vertically defines the display of comma separated bundle names.

Deselected (default) displays the bundle net names horizontally separated by a comma. For example,

a, b, c

Selected displays the bundle net names vertically so that each member net is displayed in a different row. For example,

a b c

Environment variable: bundleDisplayMode

Font section

Font Height specifies the size of your wire name text as a floating-point value, in user units. The default is 0.0625.

Environment variable: createLabelFontHeight

Font Style specifies the typeface the system uses to display the wire name.

Environment variable: createLabelFontStyle

Justification specifies the position of the cursor with respect to the wire name.

Environment variables: createLabelAutoCenterSize, createLabelAutoOffset, createLabelAutoSpacer, createLabelJustify, createLabelAutoJustify

Entry Style section

fixed offset automatically positions the wire name at a specified distance from the wire.

manual requires you to place the wire name at a grid location on or near the wire.

Horizontal Wires specifies position, offset, and rotation angle for the wire name labels in horizontal wires.

Environment variables: createLabelHorzOffset, createLabelHorzPosition, createLabelHorzRotation

Vertical Wires specifies position, offset, and rotation angle for the wire name labels in horizontal wires.

Environment variables: createLabelVertOffset, createLabelVertPosition, createLabelVertRotation

Environment variable: createLabelOffsetMode

Rotation section

Rotate Left turns the pin in 90-degree increments counterclockwise around the reference point.

Rotate Right turns the pin in 90-degree increments clockwise around the reference point.

Cross Reference Options

Use this form to display cross-reference annotations to schematic or offsheet pins. It is accessed using the Sheet – Cross Reference command.

Generate Cross Reference Report File specifies whether the system generates a cross-reference report file.

off (default) does not generate a cross-reference report file.

on generates a cross-reference report file.

View Report opens a view window that displays the report file you specify in the Report File field.

Report File specifies a name for the file where you want to store the cross-reference report.

Display Cross References in Schematic specifies whether cross-reference strings are displayed in the design window.

off does not display cross-reference strings.

on displays cross-references next to the pin in the schematic.

Cross Reference Format specifies how the system displays cross-references in the design window and report file.

Format String specifies the format of the text strings that the system displays in the design window. The default is

sheetNumber zone referenceName

Environment variable: pinRefFormat

Show Duplicate Zones determines whether the system displays duplicate pin references found within one zone.

off does not display duplicate references.

on displays all duplicate references.

Environment variable: pinRefDuplicates

Sort References By determines how the system sorts the elements within cross-reference lists.

Di rection sorts the pins into groups by pin direction, then sorts the groups by sheet number and zone. The valid pin direction groups are input pins, output pins, and I/O pins. switch is maintained solely for backward compatibility: Cadence discourages its use.

Sheet Number sorts the reference list by sheet number and zone.

Environment variable: pinRefSorting

Cross-View Checker

Use this form to check interface consistency between views. It is accessed using the Check – Cross View command.

Cross View Check Severity specifies the action system performs when pin names and pin directions do not match.

ignored results in no action.

warning generates warnings.

error generates error messages.

Environment variable: vicSeverity

Views To Check displays a list of the views checked by the cross-view checker when you click OK or Apply.

Match Pin Names Exactly , when enabled, checks whether pin names match. For example, pins A<0> and A<1> in view1 and pin A<0:1> in view2 would not match.

Environment variable: vicExactPinMatch

Check Pin Order when enabled (default), checks whether the pin order is consistent in all views in the Views To Check list mentioned above.

Only check views with explicit pin order , when enabled (default), allows port order consistency check to run only on views with the portOrder property set.

Environment variable: vicIgnoreViewsWithNoSetPinOrder

Environment variable: vicCheckPinOrder

Match Inherited Terminals when enabled (default), checks whether inherited terminals match.

Ignore Terminals with Net Expression and no Terminal in the Other View when enabled (default), ignores all inherited terminal mismatches.

Environment variable: vicInheritedPinMatch

Ignore Terminals for Specified Views ignores the views specified (if any) in View Names.

Environment variable: vicIgnoreInhTermViewList

View Names specify a list of the views to be ignored by the cross-view checker.

Environment variable: vicViewList

All Terminals/Terminal Names when All Terminals is enabled all the terminals within the views specified in View Names will be ignored. When Terminal Names is enabled, the editable field to the right is also enabled for you to specify specific terminals to be ignored.

Environment variable: vicIgnoreInhTermList

Environment variables: vicIgnoreInhTermAll, vicInheritedPins

Match Terminal Net Expressions when enabled (default), checks whether terminal net expressions match.

Environment variable: vicInheritedPinMatch

Match Terminal Supply Sensitivity when enabled (default), checks that terminal sensitivity and consistency is validated between the schematic and corresponding symbol cellviews.

Environment variable: vicTermSupplySens

Match Terminal Signal Type when enabled (default), checks for signal type mismatches between the corresponding pins of the schematic and symbol views of a cell.

Environment variable: vicTermSigType

Delete All Markers - OpenAccess version

Use this form to define the markers of a particular severity level, and in a particular cellview or hierarchy that are to be deleted. It is accessed using the Check – Delete All Markers command.

Severity defines which level of markers the system deletes in the list box and in your design.

all deletes all markers of the types selected.

none deletes none of the markers of the types selected.

fatal error deletes fatal error messages.

error deletes error messages.

acknowledged warning deletes acknowledged warning messages.

critical error deletes critical error messages.

signed off error deletes signed-off error messages.

info deletes information messages.

signed off critical error deletes signed-off critical error messages.

warning deletes only warning messages.

annotation deletes annotation messages.

Environment variable: markerDeleteSeverities

Search Scope defines the scope of the deletion.

cellview deletes markers from the current cellview only.

hierarchy starting from top cellview deletes markers throughout the entire hierarchy.

hierarchy starting from current cellview deletes markers throughout the hierarchy starting from the current cellview.

Environment variable: markerDeleteScope

Options enables you to specify whether the cellview is to be opened in edit or read mode.

Cellview Access Mode specifies the mode for opening a cellview. Environment variable: markerDeleteAccessModeIsEdit

read deletes all the markers and re-opens the cellviews in edit mode with no dialog box.

edit deletes all the markers after opening the cellview in edit mode. In this mode, you can choose to select the Confirm Access Mode Change check box and specify the cellviews to be opened in read mode.

Confirm Access Mode Change opens the Delete Marker dialog box for you to confirm whether you want to open the selected cellview in edit mode. Markers are not deleted in cellviews that stay in read mode. This check box is enabled only if Cellview Access Mode to set to edit. Environment variable: markerDeleteConfirmModeChange

Sources specifies the category of markers that are to be deleted in terms of the program that generated them.

SRC deletes schematic rules checker markers.

VIC deletes cross-view checker markers.

load deletes markers created when you opened the schematic as the source.

conn deletes connectivity markers

none appears when there are no messages in the list box.

Environment variable: markerDeleteSourcesMode, markerDeleteSources

Delete Generic – VHDL Properties

Use this form to delete properties that represent VHDL generics. It is accessed using the Edit – Properties – VHDL command and then clicking Delete.

Name specifies the generic name.

When you select a generic in the list box before you select the command, the system fills in the form with the generic information.

Delete Marker

Options enable you to specify whether the cellview is to be opened in edit or read mode.

Cellview Access Mode specifies the mode for opening a cellview.

Environment variable: markerDeleteAccessModeIsEdit

read deletes the selected markers and re-opens the cellviews in edit mode with no dialog box.

write deletes all the markers after opening the cellview in edit mode. In this mode, you can choose to select the Confirm Access Mode Change check box and specify the cellviews to be opened in read mode.

Environment variable: markerDeleteConfirmModeChange

Delete Property – Edit Object Properties

Use this form to list all the user-defined properties available to be deleted. It is accessed by clicking Delete from the Edit Object Properties – Basic form.

In general, you use the Delete Property form only to delete properties from the Edit Object Properties form or the Edit Cellview Properties form. Therefore, to delete properties from your cellview, you normally click OK or Apply on the form that calls the Delete Property form. However, the software deletes hierarchical properties from the database when you click OK or Apply on the Delete Property form.

The list box displays a list of all the user-defined properties.

Delete All , when enabled, deletes all the displayed properties.

Delete Schematic Sheet

Use this form to delete a sheet when editing the index schematic of a multisheet design. It is accessed using the Sheet – Delete command from an index schematic.

This operation cannot be undone.

Starting Number specifies the first number of a range to delete. The default is 0.

Ending Number specifies the last number of a range to delete. If you specify same or do not specify the last sheet number in the range, only the current sheet is deleted. The default is same.

Descend Edit/Read

Use this form to descend into a lower-level view of an instance. It is accessed by choosing the Edit – Hierarchy – Descend Edit / Read command and then selecting an instance in your design to descend into.

The options available vary depending on the type of instance selected. You can select from a single instance, an iterated instance, or a symbol representing a multisheet design.

Iteration Number lets you type the iteration you want to descend into. This option is available for iterated instances only.

View select the view you want to descend into.

Open for choose the mode that you want to open the selected View in.

edit opens the view in edit mode

read opens the view in read mode

auto opens the view dependent on current edit permission

Open in choose the method you want to display the descended cell view in. This option is available for single and multisheet instances only.

new tab opens the view in a new tab

current tab opens the view in the current tab (the default)

new window opens the view in a new window

Environment variable: descendCanvasType

Display specifies the type of sheet you want to descend into. This option is available for symbols representing multisheet designs only.

index descends into the index sheet.

sheet (default) descends into the sheet number you specify.

Display Options

Use this form to change the window display and grid controls. It is accessed using the Options – Display command.

Background Color lets you choose the background color of the canvas. The color of the objects on the canvas is adjusted automatically for better visibility.

Net Expression Display lets you choose how a net expression label is displayed. The net name can vary depending on the sequence of instances through which you have descended. If you have descended down through an instance that has a netSet override property, the overriding signal name is displayed in the schematic window.

Display preferences for net expressions and evaluation for a particular descended branch of the hierarchy are as follows:

	Property gnd not found	Property gnd found and specifies mygnd!	Property gnd found and specifies a local signal “A” two levels down from the top
value only	`gnd!*`	`mygnd!*`	`/I1/I2/A*`
value (default)	`gnd! (gnd!)*`	`mygnd! (gnd!)*`	`/I1/I2/A (gnd!)*`
value [property name]	`gnd! [gnd]*`	`mygnd! [gnd]*`	`/I1/I2/A [gnd]*`
value [expression]	`gnd! [@gnd:%:gnd!]*`	`mygnd! [@gnd:%:gnd!]*`	`/I1/I2/A [@gnd:%:gnd!]*`
expression only	`[@gnd:%:gnd!]*`	`[@gnd:%:gnd!]*`	`[@gnd:%:gnd!]*`

Environment variable: netExprDisplay

Drag Limit lets you specify the maximum number of shapes whose movement is shown in the design window during a move or copy operation. When the total number of shapes exceeds the specified maximum, the system substitutes a bounding box for the set of shapes.

Environment variables: schMaxDragFig, symMaxDragFig

Axes specifies whether the schematic editor displays the X and Y axes when you view or edit a schematic view.

Environment variables: schDrawAxesOn, symDrawAxesOn

Cross Cursor controls the display of the cursor in all schematic and symbol editor windows, toggling on and off a cross-hair display to aid selection, placement etc.

Environment variables: schCursorShape, symCursorShape

Object-Sensitive Pop-Up Menus lets you use the middle mouse button to open a menu of commands. The menu varies depending on the object currently under the cursor.

off disables this option. When you turn this option off, the default pop-up menu appears whenever you press the middle mouse button while an object is selected.

on (default) enables this option.

Environment variable: sensitiveMenu

Dynamic Highlighting highlights the objects in the design that are affected when certain active commands are implemented.

off disables this option.

on (default) enables this option.

Environment variables: schDynamicHilightOn, symDynamicHilightOn

Dynamic Net Highlighting specifies whether the schematic editor dynamically highlights the items that it will select when you click them.

off disables this option.

on (default) enables this option.

Connect By Name Highlighting specifies whether the arcs need to be drawn between islands of connectivity. To show the connection between wires of the same net, you can enable this option. It also includes the scenarios where the wires are not visible on the screen at the same time.

off disables this option.

on (default) enables this option.

Environment variable: schDynamicNetHilightIslands

Show Direct Connections shows the connection between pins.

off (default) disables this option.

on enables this option.

Environment variables: schShowDirectConnects, symShowDirectConnects

Show Text Justification displays a plus sign (+) in the design wherever a text string begins.

off (default) disables this option.

on enables this option.

Environment variables: schShowLabelOrigin, symShowLabelOrigin

Show Text Indicator displays a small rectangle when text becomes small and unreadable due to zooming out.

off (default) disables this option.

on enables this option.

Ignored Instances highlights the ignored instances in the schematic by displaying cross on the instances.

off (default) disables this option.

on enables this option.

Environment variable: ignoreHilightOn

Display Status Banner displays an extra line of status information in the status banner of the design window. The status line displays the coordinates for the pointer or the selection count. When disabled, the Coordinates on Status Banner option disappears from the form.

off disables this option.

on (default) enables this option.

Environment variable: statusBanner

Coordinates on Status Banner displays the coordinates of the current mouse position in the status banner. This option appears only when Display Status Banner is on.

off (default) disables this option.

on enables this option.

Environment variable: statusBannerXY

Grid Controls

Type controls the display and the appearance of the grid.

none turns off the grid display.

dotted (default) displays a grid of dots.

line displays a grid of lines.

Environment variables: schGridType, symGridType

Spacing specifies the number of user units between minor grid points on the visible grid. The default is 0.125.

Environment variables: schGridSpacing, symGridSpacing

Multiple specifies the number of minor grid points. The default is 8.

Environment variables: schGridMultiple, symGridMultiple

Snap Spacing specifies the minimum distance the cursor moves, in user units. The default distance (0.0625) is equal to half the default grid spacing distance.

Environment variables: schSnapSpacing, symSnapSpacing

Zoom / Pan Controls

Dynamic Zooming activates dynamic zoom (View – Dynamic Zooming) to objects on the design canvas. The default for this option is on. See also Dynamic Zoom.

Mode specifies the dynamic zoom setting to be used with View – Dynamic Zooming. Choose from:

- Pan To Selected
  This is equivalent to View – Pan. Where, whenever an object, or a set of objects, is selected/cross-selected in an assistant, the view will pan to have the first object visible in the center of the canvas without changing the zoom factor. If a selected object is already visible in the canvas, the view will not pan to center.
  Environment variable: autoZoomPan
- Zoom To Selected
  If this mode is selected, dynamic zoom will perform an auto-zoom (the equivalent of View – Zoom To Selected) that ensures that all selected objects are visible in the design canvas window display.
- Zoom To Fit

If this mode is selected, a View – Zoom To Fit command will automatically be run after each object selection/cross-selection is made in an assistant.

Environment variable: autoZoomMode

Zoom Scale specifies an integer value indicating the percentage of visible canvas area that should display the selected set when the Dynamic Zooming mode is set to Zoom To Selected. The default value is 90(auto zoom 1 (far) to 100 (near)).

Environment variable: autoZoomScale

Dimming Controls

Display Dimming lets you set dimming on or off. When on is selected, the View – Display Dimming option is activated which controls the current dimming setting.

Environment variable: dimming

Mode lets you choose whether dimming be Automatic (the default); where dimming will only be enabled when at least one object is currently selected, highlighted, or probed. Or, choose to set dimming to Always which will enable dimming permanently (until the option setting is changed).

Environment variable: dimmingMode

Intensity lets you set the intensity (brightness) display of the dimmed objects, where 0 equals the dimmed object display being the same as the selected object, right up to 100 which will cause the dimmed objects to be “invisible” on the canvas. The default setting is 50.

Environment variable: dimmingIntensity

Edit Cellview Properties

Use this form to display the cellview properties. It is accessed using the Edit – Properties – Cellview command.

Show options specify which properties the system displays on the form.

system displays the system-defined properties for a selected object.

Environment variable: editPropShowSystem

user (default) displays the user-defined properties for a selected object.

Environment variable: editPropShowUser

Property displays the property names for the selected object. This section of the form expands and contracts depending on which of the Show options you select and whether you select an object in the design.

The default display shows only the following system-defined properties:

Library specifies the library that contains the current design.

Cell specifies the cell name of the current design.

View specifies the view of the current design.

You cannot add, delete, or modify grayed-out properties.

When you select system, the following system-generated properties appear on the form:

CellView Type specifies the cellview type of the current design.

Mode identifies which mode you are in: edit or read only.

Environment variable: findAccessMode

Modified displays TRUE if the cellview has been modified during the current editing session.

schType identifies the type of schematic data.

instNamePrefix (appears only when the cellview is a symbol) defines a new prefix for instances of the symbol cellview. The prefix can be more than one character.

DBUPerUU displays the number of database units per user unit.

User Unit displays the current user unit.

Last Changed displays the date the cellview was last modified.

Last Checked displays the date the cellview was last checked.

Upper Right and Lower Left display the X and Y coordinates for the upper right corner and lower left corner of the cellview.

Except for the instNamePrefix symbol property, you cannot add, delete, or modify system-generated properties.

Value displays the value for a property. Use Modify to edit values.

Display determines whether a property value is displayed in the design. When you enable one of the display options (value, name, or both), the information appears on the schematic near the selected object.

value displays only the value of the property.

name displays only the name of the property.

both displays both the name and the value of the property, separated by an equal sign.

off (default) displays neither the name nor the value of the property.

The Add, Delete, and Modify buttons appear on the form only when you enable the Show – user option at the top of the form. Use these options to add, delete, and modify user-defined properties.

Add displays the Add Property form, which you use to add new user properties to the Edit Cellview Properties form. To add the new properties to your cellview, click OK or Apply on the Edit Cellview Properties form.

Delete displays the Delete Property form, which lets you delete user properties. To delete properties from your cellview, click OK or Apply on the Edit Cellview Properties form.

The software deletes hierarchical properties from the database when you click OK or Apply on the Delete Property form.

Modify displays the Modify Property form, which lets you change the names and values for selected user properties. To apply the changes to your cellview, click OK or Apply on the Edit Cellview Properties form.

Edit Object Properties – Basic

Use this form to change properties of specific objects. It is accessed by selecting an object with a property you want to edit and using the Edit – Properties – Objects command.

You use the Previous and Next buttons along with the Apply To options below to locate objects in your design window. When there are multiple objects in the selected set, you use the Next and Previous buttons to locate objects in the set. You use the Apply To options to specify the objects the software changes.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Apply To consists of up to three cyclic fields that you use to specify the object, or group of objects in a selected set, whose properties you want to change. The software uses one color to highlight selected objects. But when there are multiple objects in the selected set, the software uses a second color to highlight the current object. And when you configure the cyclic fields to apply changes to multiple objects, the software uses a third color to highlight all the affected objects.

Selection scope specifies whether you want to edit only the current object, only the selected objects in the specified object type group, or all the objects in the specified object type group (which includes both selected and unselected objects of the specified object type).

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Object filter appears only when the selection scope is set to all selected or all. This option acts as a secondary filter for further limiting the selection scope. The options vary depending on the selected object type.

Show specifies which properties the system displays on the form.

system displays the system-defined properties for a selected object.

Environment variable: editPropShowSystem

user (default) displays the user-defined properties for a selected object.

Environment variable: editPropShowUser

CDF (default) displays predefined properties defined by the Component Description Format (CDF). For more details, see Applying One or More CDF Parameter Edits to Multiple Objects.

Environment variable: editPropShowCDF

Environment variables: editPropChangeAllConfirm, editPropProtectCDF

Edit Object Properties – Instance and Block

Use this form to edit instance and block properties and their parameters and values. It is accessed by selecting an instance or block that has a property you want to edit and using the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Apply To consists of up to three cyclic fields (only current, all selected, all) that you use to specify the object, or group of objects in a selected set, whose properties you want to change. The software uses one color to highlight selected objects. But when there are multiple objects in the selected set, the software uses a second color to highlight the current object. And when you configure the cyclic fields to apply changes to multiple objects, the software uses a third color to highlight all the affected objects.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Show specifies which properties the system displays on the form.

system displays the system-defined properties for a selected object.

Environment variable: editPropShowSystem

user (default) displays the user-defined properties for a selected object.

Environment variable: editPropShowUser

CDF (default) displays predefined properties defined by the Component Description Format (CDF).

Environment variable: editPropShowCDF

Browse opens the Library Browser, which you can use to fill in the form automatically.

Reset Instance Labels Display resets the display and placement of all instance labels to their default specifications as defined in the symbol view.

Property lists the properties that the system automatically extracts from the design database.

Value displays the values for the corresponding properties.

Display determines whether the system displays the property name and property value in the schematic.

off (default) displays neither the name nor the value.

value displays only the value.

name displays only the name.

both displays both the name and the value, separated by an equal sign.

User Property lists the user properties that exist for the current instance/block.

Master Value specifies the master symbol property value. You cannot edit this field.

Local Value specifies the local instance property value.

Display determines whether the system displays the property name and property value in the schematic.

off (default) displays neither the name nor the value.

value displays only the value.

name displays only the name.

both displays both the name and the value, separated by an equal sign.

Change All allows you to apply user property value changes to all instances in the view or to all selected view instances. This option is only available if you have already selected Apply To: all selected or all.

The options described below appear when you enable the Show – system option.

Magnification controls the scaling factor applied to the selected instance. A value of 1 (one) specifies the true size.

Origin displays the location of the instance in the cellview.

The Add, Delete, and Modify buttons affect only the display of properties on the Edit Objects Properties form. You must click OK or Apply to apply the changes to objects in your design.

Add displays the Add Property form, which lets you add a new property to the Edit Object Properties form.

Delete displays the Delete Property form, which lets you delete selected properties from the Edit Object Properties form.

Modify displays the Modify Property form, which lets you redefine properties currently displayed on the Edit Object Properties form.

The following fields appear for block editing in addition to the ones described for editing an instance on the previous pages.

FreezePinCreate appears only if you have selected a block. It controls whether the system adds a pin to a block when you connect a new wire to the edge of a block. When this option is disabled (default), the system automatically creates a pin when you click the edge of a block to terminate the wire. When this option is enabled, the system does not create a pin. Instead, the system automatically draws the wire to the nearest existing pin, when one exists. When no pin exists, the system does not let you connect a wire to the block. Use the Commands tab in the Editor Options form (Options – Editor command) to specify the pin directions.

The following options appear on the form only when you enable the Show – system option.

Pin Direction specifies a direction for the pin. switch is maintained solely for backward compatibility: Cadence discourages its use.

Pin Name specifies the pin name.

Net Name displays the net name.

Inherit , in general when this option is enabled, derives the pin name from the net name. However, if you delete the wire segment for a pin, the system automatically enables this option and derives the net name from the pin name.

Environment variables: editPropChangeAllConfirm, editPropProtectCDF

Edit Object Properties – Instance Pin

Use this form to edit instance pin properties and their parameters and values. It is accessed by selecting an instance pin that has a property you want to edit and using the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Show specifies which properties the system displays on the form.

user (default) displays the user-defined properties for a selected object.

Environment variable: editPropShowUser

CDF (default) displays predefined properties defined by the Component Description Format (CDF).

Environment variable: editPropShowCDF

Name displays the name of the instance pin.

Direction specifies the direction of the instance pin. switch is maintained solely for backward compatibility: Cadence discourages its use.

Net Name displays the name of the net that is connected to the instance pin.

The cyclic field to the right of the Name field determines whether the system displays the property value in the schematic.

The Add, Delete, and Modify buttons affect only the display of properties on the Edit Objects Properties form. You must click OK or Apply to apply the changes to objects in your design.

Add displays the Add Property form, which lets you add a new property to the Edit Object Properties form.

Delete displays the Delete Property – Edit Object Properties form, which lets you delete selected properties from the Edit Object Properties form.

Modify displays the Modify Property – Edit Object Properties form, which lets you redefine properties currently displayed on the Edit Object Properties form.

Environment variables: editPropChangeAllConfirm, editPropProtectCDF

Edit Object Properties – Label

Use this form to edit label properties and label parameters and values. It is accessed by selecting the label whose properties you want to edit and choosing the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Attachment Label specifies which object the label belongs to.

Display determines whether the system displays the property value in the design window. You can toggle this option to off to suppress the display. To display labels after they have been turned off, see Resetting Invisible Labels .

Height lets you specify the height of the label.

Font lets you select a font for the label.

Justification lets you specify where the label appears in relation its origin (placement location).

Drafting , when enabled (default), maintains the normal orientation of the text as you rotate a label 180 degrees around a reference point. When this option is disabled, rotated text appears upside down.

Overbar is only a display option. You use this option to specify whether the software displays an overbar over a label. When this option is disabled (default), the software displays underscore characters ( _ ) in the label as part of the label text string. When this option is enabled, the software interprets underscore characters ( _ ) in the label as toggle switches that control where overbars begin and end. Overbars appear above the label, as shown in the examples.

The property name _abcde puts an overbar over all 5 letters.
The property name ab_cde puts an overbar over only cde.
The property name _abc_de puts an overbar over only abc.
The property name ab_cd_ef_gh_ij puts an overbar over only cd and gh.
To avoid confusion when text contains underscore characters, Cadence recommends that you disable this display option. It is provided only for backward compatibility.

Edit Object Properties – Master Property

Use this form to change master properties. It is accessed by selecting an object with a master property you want to edit and using the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Attachment Label specifies which object the property belongs to.

Property lists the properties that the system automatically extracts from the design database.

<property name> appears only when the selected property is on an instance. This option does not appear when the property is on a net, a terminal, or a cellview.

Master Value specifies the master symbol property value. You cannot edit this field.

Local Value specifies the local instance property value.

Display specifies whether the system displays the property name and property value in the schematic.

off displays neither the name nor the value.

value (default) displays only the value.

name displays only the name of the property.

both displays both the name and the value, separated by an equal sign.

Height specifies the height of the property label.

Font specifies a font for the property label.

Justification specifies where the label appears in relation to its origin (placement location).

Overbar is only a display option. You use this option to specify whether the software displays an overbar over a property label. When this option is disabled (default), the software displays underscore characters ( _ ) in the property label as part of the property label text string. When this option is enabled, the software interprets underscore characters ( _ ) in the property label as toggle switches that control where overbars begin and end. Overbars appear above the property label, as shown in the examples.

The property name _abcde puts an overbar over all 5 letters.
The property name ab_cde puts an overbar over only cde.
The property name _abc_de puts an overbar over only abc.
The property name ab_cd_ef_gh_ij puts an overbar over only cd and gh.
To avoid confusion when text contains underscore characters, Cadence recommends that you disable this display option. It is provided only for backward compatibility.

Edit Object Properties – Net Expression

Use this form to edit a net expression label. It is accessed by selecting the net expression label you want to edit and using the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Attachment reattaches the net expression label to a wire or pin.

Property Name specifies the name of the property that can be used to override the default global signal. In other words, the name of the property whose value redefines the name of the net. The system evaluating the expression searches for the property that has this name to get the value to inherit for the net.

Default Net Name specifies the default property name of the global signal or net name. The schematic editor uses the default net name, for example vdd!, gnd!, or vss!, when an inherited connection has not been established. The name must specify a global single-bit value.

Evaluated Name contains the result of evaluating the net expression for the current descend path of the window.

Height specifies the height of the net expression label text in user units.

Font specifies the font the system uses to display the net expression label.

Justification specifies where the label appears in relation to its origin (placement location).

Edit Object Properties – Note Shapes

Use this form to change the line property or position of a note shape. It is accessed by selecting a note shape and choosing the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Property lists the properties that the system automatically extracts from the design database.

Value displays the values for the corresponding properties.

Line Style specifies whether the system uses a solid or dashed line to draw the note shape.

The form displays various options depending on the shape type you select.

The following options appear when you select a line shape.

Width specifies whether the line shape is narrow (default) or wide. You can edit the text field when you enable the wide option.

Points List specifies the coordinates for the points that make up the shape.

The following option appears when you select a polygon shape.

Point List specifies the coordinates for the points that make up the shape.

The following options appear when you select a rectangle shape.

Upper Right specifies coordinates that define the upper right-hand corner of the shape.

Lower Left specifies coordinates that define the lower left-hand corner of the shape.

The following options appear when you select either a circle shape or an ellipse shape. The Shape text field displays ellipse for both circle and ellipse shapes.

Center specifies the coordinates that define the center of the shape.

X Radius specifies the coordinate that defines the Xradius of the shape.

Y Radius specifies the coordinate that defines the Yradius of the shape.

The following options appear when you select an arc shape.

Center specifies the coordinates that define the center of the shape.

X Radius specifies the coordinate that defines the Xradius of the shape.

Y Radius specifies the coordinate that defines the Yradius of the shape.

Start Angle specifies the first point of the arc.

Stop Angle specifies the second point of the arc.

Edit Object Properties – Note Text

Use this form to edit the text of a note after you add it to your design. It is accessed by selecting the note text and choosing the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Attachment performs two functions.

When the text is already associated with an object, the software highlights the associated object in the cellview.
Lets you associate the note text with an object in the cellview by automatically drawing a line from the text to the object when you move the cursor into the design window.

Note Text specifies the text for your note. You can either type in the text or use Read File to load the text from a file. You can edit any text you load into the this edit window.

Read File loads text from the specified file into the Note Text edit window.

Height lets you specify the height of the note text.

Font lets you select a font for the note text.

Justification lets you specify where the note text appears in relation to its origin (placement location).

Drafting , when enabled (default), maintains the normal orientation of the note text as you rotate a label 180 degrees around a reference point. When this option is disabled, rotated text appears upside down.

Overbar is only a display option. You use this option to specify whether the software displays an overbar over the note text. When this option is disabled (default), the software displays underscore characters ( _ ) in the note text as part of the note text string. When this option is enabled, the software interprets underscore characters ( _ ) in the note text as toggle switches that control where overbars begin and end. Overbars appear above the note text, as shown in the examples.

The property name _abcde puts an overbar over all 5 letters.
The property name ab_cde puts an overbar over only cde.
The property name _abc_de puts an overbar over only abc.
The property name ab_cd_ef_gh_ij puts an overbar over only cd and gh.
To avoid confusion when text contains underscore characters, Cadence recommends that you disable this display option. It is provided only for backward compatibility.

Edit Object Properties – Other Object

Use this form to edit visible user-defined object properties, values, and their display attributes. It is accessed by selecting the object property and choosing the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Owner specifies which object the property belongs to.

Property lists the properties that the system automatically extracts from the design database.

Name specifies the property name.

Value specifies the property value.

Display specifies whether the system displays the property name and property value in the schematic.

off displays neither the name nor the value.

value (default) displays only the value.

name displays only the name of the property.

both displays both the name and the value, separated by an equal sign.

Height specifies the height of the property label.

Font specifies a font for the property label.

Justification specifies where the label appears in relation to its origin (placement location).

Overbar is only a display option. You use this option to specify whether the software displays an overbar over a property name. When this option is disabled (default), the software displays underscore characters ( _ ) in the property name as part of the property name text string. When this option is enabled, the software interprets underscore characters ( _ ) in the property name as toggle switches that control where overbars begin and end. Overbars appear above the property name, as shown in the examples.

The property name _abcde puts an overbar over all 5 letters.
The property name ab_cde puts an overbar over only cde.
The property name _abc_de puts an overbar over only abc.
The property name ab_cd_ef_gh_ij puts an overbar over only cd and gh.
To avoid confusion when text contains underscore characters, Cadence recommends that you disable this display option. It is provided only for backward compatibility.

Edit Object Properties – Pin

Use this form to edit pin properties and their parameters and values. It is accessed by selecting a pin that has a property you want to edit and using the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Show specifies which properties the system displays on the form.

system displays the system-defined properties for a selected object.

Environment variable: editPropShowSystem

When you enable the Show – system option, the form expands to display information about the pin master to show the Magnification and Origin fields.

Magnification controls the scaling factor applied to the selected instance. A value of 1 (one) specifies the true size.

Origin specifies the location of the instance in the design.

user (default) displays the user-defined properties for a selected object.

Environment variable: editPropShowUser

CDF (default) displays predefined properties defined by the Component Description Format (CDF).

Environment variable: editPropShowCDF

Property lists the properties that the system automatically extracts from the design database.

Value displays the values for the corresponding properties.

Display determines whether the system displays the property value in the schematic.

Direction specifies a direction for the pin. switch is maintained solely for backward compatibility: Cadence discourages its use.

Usage specifies whether the pin is an offsheet connector.

Signal Type specifies the signal type of the selected pin. Refer to Defining Signal Types.

Pwr Sensitivity type in, or select from the drop-down menu (which lists all the single-bit terminals in the cellview), the names of the terminals that would make the current pins’ terminals sensitive to the entered power terminals. For more details, see How to Set Supply and Ground Sensitivity.

Gnd Sensitivity type in, or select from the drop-down menu (which lists all the single-bit terminals in the cellview), the names of the terminals that would make the current pins’ terminals sensitive to the entered ground terminals. For more details, see How to Set Supply and Ground Sensitivity.

The specified power and ground terminals must be single-bit terminals and pre-exist in the database before the sensitivity relationship is established. If you specify terminals that do not already exist in the database, or if the terminal name is not a single-bit, this will invoke an error condition. Subsequently, no pin placement will take place, the error field will be highlighted, and an error message will be displayed in the CIW.

Add displays the Add Property form, which lets you add a new property to the Edit Object Properties form.

Delete displays the Delete Property form, which lets you delete selected properties from the Edit Object Properties form.

Modify displays the Modify Property form, which lets you redefine properties currently displayed on the Edit Object Properties form.

Environment variables: editPropChangeAllConfirm, editPropProtectCDF

Edit Object Properties – Pin Name

Use this form to edit pin name properties and pin name parameters and values. It is accessed by selecting a pin and choosing the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Attachment lets you reattach the pin name to the pin.

Label specifies the text for the pin name.

Value specifies whether the system displays the property value in the schematic. You can choose off to suppress the display.

Height specifies the height of the pin label in user units.

Font specifies a font for the pin label.

Justification specifies where the label appears in relation to the pin.

Drafting when enabled (default) maintains the normal orientation of the text when you rotate a label 180 degrees around a reference point. When disabled, rotated text appears upside down.

Overbar is only a display option. You use this option to specify whether the software displays an overbar over a pin name. When disabled (default), the software displays underscore characters ( _ ) in the pin name as part of the pin name text string. When enabled, the software interprets underscore characters ( _ ) in the pin name as toggle switches that control where overbars begin and end. Overbars appear above the pin name, as shown in the examples.

The property name _abcde puts an overbar over all 5 letters.
The property name ab_cde puts an overbar over only cde.
The property name _abc_de puts an overbar over only abc.
The property name ab_cd_ef_gh_ij puts an overbar over only cd and gh.
To avoid confusion when pin names contain underscore characters, Cadence recommends that you disable this display option. It is provided only for backward compatibility.

Edit Object Properties – Selection Box

Use this form to change the position of the selection box. It is accessed by selecting the selection box and choosing the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Property lists the properties that the system automatically extracts from the design database.

Shape specifies the shape of the selection box.

Upper Right specifies the coordinates for the upper right corner of the selection box.

Lower Left specifies the coordinates for the lower left corner of the selection box.

Value specifies the values for the properties. You can edit the coordinate values when the selection scope is set to only current.

Edit Object Properties – Symbol Label

Use this form to edit symbol label properties and symbol label parameters and values. It is accessed by selecting a symbol label and using the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Attachment lets you reattach the label to another component in the design.

Label specifies the label name.

Value determines whether the property value is displayed in the schematic. You can set this option to off to suppress the display. To display labels after they have been turned off, see Resetting Invisible Labels .

Choice contains a list of valid label types.

Height specifies the height of the symbol label.

Font specifies a font for the symbol label.

Justification specifies where the label appears in relation to its origin (placement location).

Type specifies a label type.

normalLabel displays the label as a text string.

NLPLabel evaluates the label according to netlisting rules and displays the result.

ILLabel evaluates the label as a SKILL expression and displays the result.

The property name _abcde puts an overbar over all 5 letters.
The property name ab_cde puts an overbar over only cde.
The property name _abc_de puts an overbar over only abc.
The property name ab_cd_ef_gh_ij puts an overbar over only cd and gh.
To avoid confusion when labels contain underscore characters, Cadence recommends that you disable this display option. It is provided only for backward compatibility.

Edit Object Properties – Symbol Pin

Use this form to edit symbol pin properties and symbol pin parameters and values. It is accessed by selecting a symbol pin and choosing the Edit – Properties – Objects command.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Show specifies which properties the system displays on the form.

system displays the system-defined properties for a selected object.

Environment variable: editPropShowSystem

user (default) displays the user-defined properties for a selected object.

Environment variable: editPropShowUser

Property lists the properties that the system automatically extracts from the design database.

Value displays the values for the corresponding properties.

Display determines whether the system displays the property value in the schematic. You can toggle this option to off to suppress the display.

Direction specifies a direction for the pin. switch is maintained solely for backward compatibility: Cadence discourages its use.

When you enable the Show system option, the following options appear.

accessDir options let you specify a property that defines the valid direction from which a wire segment can be attached to a pin. You can specify combinations of these options. These options are not referenced in the Virtuoso® Schematic Editor environment; they are referenced in the place-and-route environment.

left specifies that the wire segment must be routed from the left.

right specifies that the wire segment must be routed from the right.

top specifies that the wire segment must be routed from the top.

bottom specifies that the wire segment must be routed from the bottom.

none specifies that a wire segment cannot be routed to the pin.

unknown specifies that any wire segment route is unknown.

The Add, Delete, and Modify options affect only the display of properties on the Edit Objects Properties form. You must click OK or Apply to apply the changes to objects in your design.

Add displays the Add Property form, which lets you add a new property to the Edit Object Properties form.

Delete displays the Delete Property form, which lets you delete selected properties from the Edit Object Properties form.

Modify displays the Modify Property form, which lets you redefine properties currently displayed on the Edit Object Properties form.

Edit Object Properties – Symbol Shape

Use this form to change the width property of a symbol shape from narrow to wide or to reposition a symbol shape using coordinates. It is accessed by selecting a shape and choosing Edit – Properties – Objects.

Previous cycles backward to view the preceding object in the selected set. When you reach the first object in the selected set, this button has no effect.

Next cycles forward to view the next object in the selected set. When you reach the last object in the selected set, this button has no effect.

Object group lists the object types in the selected set. Use this option to locate the first object of a particular object type.

Property lists the properties that the system automatically extracts from the design database.

Value specifies the type of symbol shape.