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Contents

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1

Virtuoso Voltage Dependent Rules Flows

Licensing Requirements

Types of VDR Labels

Prerequisites for the VDR Flows

Specifying a Minimum Voltage Spacing Constraint

Specifying Layers and Purposes for Generic Voltage Labels

Specifying Layers and Purposes for Voltage Markers

Specifying Layers and Purposes for Synced Nets

Simulation Driven VDR Flow

Setting Up Testbenches and Corners in Virtuoso ADE

Enabling Voltage Capture in Virtuoso ADE

Running Simulations and Capturing Voltage Data

Populating Voltages and Generating Labels or Markers

Showing Voltage Information in Info Balloons

Checking for Voltage Dependent Spacing Violations using DRD

Customizing the Voltage Calculation

Schematic Driven VDR Flow

Propagating Voltage Values from Schematic to Layout

Checking Voltage Values between Schematic and Layout

Updating Voltage Values in the Layout to Match the Schematic

Backannotating Voltage Values from Layout to Schematic

Sanity Checking Voltage Values in Constrained Labels

Defining and Checking Voltage Synced Nets

Creating Delta Voltage Constraints between Nets

Creating Userdv Shapes in the Layout View

Layout-centric VDR Flow

Entering Voltage Values in the Property Editor Assistant

Generating Voltage Labels for Manually Entered Voltages

Viewing Voltage Labels in the Layout View

Checking Voltage Labels in the Layout View

Generating Voltage Markers for Manually Entered Voltages

Post-Processing Voltage Labels and Markers

Deleting Voltage Labels and Markers

Searching Voltage Labels for Debugging

Searching VSync Shapes for Debugging

Searching Userdv Shapes for Debugging

Rules for Creating Voltage Labels in Shared Cells

Example 1

Example 2

Example 3

Deleting VDR Objects

2

Environment Variables

vdrConstraintGroupName

vdrCreateLabelsForOpenNet

vdrCreateLabelOnHighestMetal

vdrDebugHierSharedCellsOnly

vdrDeltaVIgnorePurposes

vdrEnableHierStopField

vdrGenerateLabels

vdrGenerateLabelsOn

vdrGenerateMarkers

vdrHierarchyStopLevel

vdrHighVoltagePurpose

vdrHighVoltagePurposes

vdrLabelHeight

vdrLayerPurposeFile

vdrLogFile

vdrLowVoltagePurpose

vdrLowVoltagePurposes

vdrNetVoltageMode

vdrOverrideMode

vdrPostLabelCreationCallback

vdrPrecision

vdrReportLowerHierMarkerTouchingTopLevelNet

vdrSanityCheckerCheckAgainst

vdrSanityCheckerCompleteHierarchy

vdrSanityCheckerCsvFileName

vdrSanityCheckerDatasets

vdrSanityCheckerGenLogFile

vdrSanityCheckerLogFile

vdrSanityCheckerObjectType

vdrSanityCheckerTolerance

vdrSanityCheckerToleranceType

vdrSharedCellList

vdrSharedCellListForInternalNetsOnly

vdrSnapLabelMfgGrid

vdrUseDatasetsOnlyForLabelCreation

vdrValidLayersList

vdrVerbose

vdrVoltagePurposeFile

vdrVoltageRounding

vdrVSyncCreateCheckLayer

vdrVSyncIgnorePurposes

vdrVSyncSanityCheckLayer

vdrZeroShapeNets

vdrZeroVoltageNets

A

Voltage Dependent Rules Forms

Delete VDR Objects

EAD Setup

VDR Dataset

VDR Debugger

VDR Sanity Checker

Voltage Dependent Rules

Voltage Dependent Rules (from net voltages)

VSync Constraints Visualizer

B

Voltage Dependent Rules Functions

vdrCheckVoltageLabels

vdrCreateUserdvConstraintsFromFile

vdrCreateVoltageLabel

vdrCreateVoltageLabelEx

vdrCreateVoltageLabelOnNets

vdrCreateVoltageMarkers

vdrCreateVoltageMarkersOnNets

vdrCreateVSyncConstraintsFromFile

vdrDebuggerGUI

vdrDeleteGUI

vdrDeleteLabels

vdrDisplaySchematicGUI

vdrGenerateLabelsGUI

vdrGenerateUserdvShapes

vdrGenerateVSyncShapes

vdrGetValidLayers

vdrResetNetVoltages

vdrRunSanityChecker

vdrRunUserdvSanityChecker

vdrRunVoltageConflictChecker

vdrRunVSyncSanityChecker

vdrSanityCheckerGUI

vdrSetNetVoltageRange

vdrSetValidLayers

vdrTransferVSyncConstraints

vdrVsyncVisualizerGUI

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