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Virtuoso XL Layout Editor User Guide

Wire Editing in the Virtuoso XL Layout Editor

Overview

When wire editing is enabled, design rule correct interactive routing and editing features are available through the Virtuoso® XL Layout Editor (Virtuoso XL) environment. These routing and editing features are the initial implementation of the Virtuoso Custom Router interactive routing features mapped to Virtuoso XL.

Main Features

The following are the main features that are available when wire editing is enabled:

Route design-rule-correct single and multiple paths based on connectivity

Push nets and components while routing

Input commands and constraints through a .do file

Check existing routes for violations

Reshape wire segments

Copy existing routes to unrouted connections

Generate reports about routing conditions or objects

Eliminate notches and removes extra bends in selected wires

Compact routes within a selected area

Wire Editing Commands

When wire editing is enabled, the following Virtuoso XL commands have these enhanced features and options.

Command

Description

Create – Path

Routes single and multiple paths, places multiple vias, matches

 

pin and wire widths, and pushes routed paths and components

Edit – Stretch

Pushes routed paths and components while stretching paths

Edit – Other – Split

Reshapes wires by stretching a selected segment and pushes

 

routed paths and components

December 2002

364

Product Version 5.0

Virtuoso XL Layout Editor User Guide

Wire Editing in the Virtuoso XL Layout Editor

The following commands are exclusive to Virtuoso XL wire editing.

Command

Description

Edit – Copy Route

Copies existing routes, including vias, to unrouted connections

 

that have similar lengths and topology

Edit – Critic Wire

Eliminates notches and removes extra bends in selected paths.

Edit – Pull

Compacts routes within a selected area

Verify – Check Route

Checks the current cellview for violations based on the options

 

selected in the Check Routes form

Verify – Report

Displays the following information:

 

Completion rate

 

Unconnects

 

Conflicts

 

Rule violations

 

Number of pins, components, and vias

 

Length for each routing layer

 

Component or net descriptions

 

Current constraints

 

Technology process rules

Virtuoso Custom Router to Virtuoso XL Command Mapping

The interactive routing commands of the Virtuoso Custom Router are mapped to the wire editing commands and enhanced Virtuoso XL commands as follows:

Virtuoso Custom Router

Virtuoso XL with Wire Editing

Enabled

 

Edit Route

Create – Path

Move

Edit – Stretch / Edit – Other – Split

Copy Route

Edit – Copy Route

Cut Segment

Edit – Other – Split

Delete

Edit – Delete

December 2002

365

Product Version 5.0

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