Product Documentation

Virtuoso Simulation Driven Interactive Routing User Guide
Product Version IC23.1, September 2023

Contents

1

Introduction to Simulation Driven Routing

Prerequisites for the SDR Flow

The SDR Flow in Virtuoso

SDR Bindkeys and Visuals

Sources and Sinks Map

2

Performing Interactive SDR Checks

Visualizing the Current Distribution Per Net

Using Enforce Checker Mode

Using Notify Checker Mode

Using Off Checker Mode

Current Estimation Modes

Using Auto Current Estimation Mode

Using Sum Connected Pins Currents Estimation Mode

Using Maintain Constant Current Estimation Mode

Using Nearest Island Current Estimation Mode

Running Interactive SDR Current Density Checks

Connecting Twigs Automatically

Automatic Twig Mesh Routing

Tapering in SDR

Routing Over Device

A

Simulation-driven Interactive Routing Environment Variables

weAutoTwigCheckerMode

weAutoTwigDefaultLayer

weAutoTwigDirection

weAutoTwigMatchPinWidth

weAutoTwigMeshRoutingEnabled

weAutoTwigTargetsDetectionAccuracy

weAutoTwigTargetsFinderObjectsLimit

weAutoTwigTargetsType

weAutoTwigTrunkViaAlignment

weAutoTwigTrunkViaDirection

weAutoTwigTrunkViaMode

weSdrCurrentEstimationMode

weSdrDatasetNamingMethod

weSdrDIDatasetName

weSdrDisplayClusters

weSdrElectricalMode

weSdrWidthMultiplier

weSdrMaxDisplayPins

weSdrParasiticExtractionEffort

weSdrResistanceScale

weSdrShapeChasingLimit

weSdrSourceSinkMap

weSdrSourceSinkMapAllCurrents

B

SDR Options Form

Import DI As Dataset

⠀ X