Defining Connectivity for a Subpart

You can define connectivity for any multipart path (MPP) subpart by associating it with a net. You can also designate a subpart as a pin. The changes you make do not affect the MPP in the layout window until you click OK or Apply in the ROD Subpart form.

You must type the name of the net in the ROD Subpart form for each subpart that has connectivity. If you do not type a name, the subpart is not associated with a net, and the system beeps when you click to start creating the MPP in a cellview window.

Before you add the connectivity for a subpart, ensure you have defined a subpart. For information, see Subparts of a Multipart Path.

To define the connectivity for a subpart, do one of the following in the ROD Subpart form:

• To assign the subpart to a net:
  1. For Connectivity, choose Net.
  2. The form expands to show the Connectivity section.
  3. In Net Name, type the name of the net.
  4. To apply the net assignment to the subpart of the MPP in the layout window, click OK or Apply.
• To assign the subpart to a pin:
  1. For Connectivity, choose Pin.
     The form expands to show both the net and pin connectivity fields.
  2. For Net Name, type the name of the net.
     You must enter a net name for every subpart that has pin connectivity or the system beeps when you click in the cellview window to begin creating the MPP.
  3. For I/O Type, choose one of the following: input, output, inputOutput, switch, or jumper.
  4. For Access Direction, choose the parts of the pin to which routing can be connected.
  5. Select Display Terminal Name if you want to create a text-display object to display the net name for the pin.
     If pin names are not visible in the cellview, enable the Pin Names option in the Display Options form.
     The system uses the values of four fields to calculate the position of the text-display object: Reference Handle, Offset X, Offset Y in the Rod Subpart form and the Justification field on the Set Pin Label Text Style form.
  6. Select Display Terminal Name Option if you want to set pin name display options, such as font, height, layer, and justification on the Set Pin Label Text Style form. To set the options, use the Options button.
  7. For Reference Handle, choose where you want to align the pin name in relation to the master path or subpart.
     You can offset the pin name from the object in the direction of the X and/or Y axis.
  8. For Offset X, type a positive or negative floating-point number to offset the origin point of the pin name along the X axis from the point specified by Reference Handle.
  9. For Offset Y, type a positive or negative floating-point number to offset the origin point of the pin name along the Y axis from the point specified by Reference Handle.
  10. To save the subpart values as part of the MPP in the layout window, click OK or Apply in the ROD Subpart form.
      To make all the current values in the ROD Subpart form, including the connectivity values, part of the MPP in the layout window, you must click OK or Apply.
  
  The system changes the MPP in the layout window to include the subpart connectivity.

For information about the overall steps involved in creating an MPP, see Flow for Creating Multipart Paths.

Related Topics

Create Multipart Path Form

ROD Subpart Form

Subparts of a Multipart Path

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