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Contents

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1

Introduction to Symbolic Placement of Devices

Licensing Requirements

Benefits of using SPD

The SPD Flow

Prerequisites for Running SPD

Source Schematic File

Configured Physical Hierarchy of Target Layout

Component Types

Parameter Name Mapping

Permute Rules

Layer Functions and Minimum Spacing Rules

Libraries Defined to Execute SPD

User-Defined Abutment Callback Functions

User-Defined Flow Callback Functions

2

Getting Started with SPD

Generating a Symbolic Placement

Generating a Symbolic Placement from Schematics XL

Generating a Symbolic Placement from Layout XL

SPD Editing Window

Menus

Toolbars

Canvas

Highlighting and Selecting Data

Understanding the Symbolic Design

Row-based Placement

Support for Multiple Rows

Device Representation

Displaying Flight Lines

Abutment

Stacked Devices

Saving an SPD Design

Exiting the SPD Editing Window

3

Editing Symbolic Devices

Loading a Design

Undoing and Redoing Commands

Moving Symbolic Devices

Abutting and Unabutting Symbolic Devices

Swapping Symbolic Devices

Flipping Symbolic Devices

Permuting Symbolic Devices

Stacking Symbolic Devices

Splitting Fingered Devices

Folding Symbolic Devices

Aligning Symbolic Devices

Generating Chained Devices

Adding Dummy Devices

Backannotating Symbolic Devices

4

Optimizing the Placement and Generating the Layout

Appending Components from the Schematic

Appending Partial Components from Layout

Removing Symbolic Devices

Packing the Design

Resetting Placement

Displaying Flight Lines

Reordering and Resetting Trunks

Probing Selected Nets

Checking Source or Updating Layout

Displaying Free Bucket Size of Devices

Previewing the Design

Generating the Layout

A

Symbolic Placement of Devices Forms

Abut

Align

Append Selected from Source

Check or Update

Dummy Options

Edit Stack

Flip Horizontal

Generate Chained Devices

Generate Folded Devices

Generate Layout

Load SPD Design

Move

Probe & Align

Save SPD Design

SPD Options

B

Symbolic Placement of Devices Environment Variables

List of SPD Environment Variables

abutSameWidthOnly

abutAllAutoFlipChain

alignGates

alignGateStyle

alignMos

autoAlignGates

autoPackInX

betweenRowPair

chainFolds

createPGTrunk

createPowerGroundRails

createSigTrunk

deleteExistingRails

expandSpacingForTrunks

flightLineConn

flightLineMode

foldingThresholdNType

foldingThresholdPType

freeSymbolLength

freeSymbolWidth

genLabel

genLabelFont

genLabelHeight

genLabelHeightValue

genLabelJust

genLabelLr

genLabelOri

genLabelPGLr

genLabelPGLrRatio

genLabelPGPur

genLabelType

heightNmosRegion

heightPmosRegion

highlightGatePattern

initDoChaining

initDoFolding

interdigitateChains

labelDisplay

launchRunOnce

layerVdd

layerVss

maxStackDepth

mediumSymbolMaxFins

mediumSymbolMaxLength

mediumSymbolMaxWidth

mediumSymbolMinFins

mediumSymbolMinLength

mediumSymbolMinWidth

mixPGFlightLinesSignals

optionsFile

pdPins

pgTrunkBeginEndType

pinDriven

placementPriority

PNmixedRow

preventGateShorts

preventWellShorts

reuseWindow

rowPattern

showPGFlightLines

sigTrunkLr

sigTrunkSpacingT2O

sigTrunkSpacingT2T

sigTrunkWidth

smartMoveInsertOnePos

smartMoveKeepChains

spacingNStack

spacingOd

spacingOdMode

spacingOdUserFunc

spacingPodNod

spacingPStack

spacingVddPod

spacingVssNod

spdDesignLibName

spdDummyLengthOptions

spdDummyLengthValue

spdDummyNet

spdDummyNumFingersOptions

spdDummyNumFingersValue

spdDummyWidthOptions

spdDummyWidthValue

spdMoveAfterAppend

spdRememberDummyVals

tabbedWindow

vddNetName

vssNetName

widthVdd

widthVss

C

Symbolic Placement of Devices Bindkeys

D

Symbolic Placement of Devices Videos

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