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Contents

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1

Virtuoso Abstract Generator

Prerequisites for Virtuoso Abstract Generator

Abstract Generator Licensing Requirements

Abstract Generation Use Model

Support for Overridden and Instance Terminals

Flows Supported by Abstract Generator

GDSII to LEF

DEF to OA

LEF to OA

Virtuoso Layout Flow

Regular Expressions in Abstract Generator

Support for Special Characters in Regular Expressions

Support for Special Constructs “\” in Regular Expressions

2

Standalone Abstract Generator

Standalone Abstract Generator Environment Setup

Launching the Standalone Abstract Generator

Standalone Abstract Generator Interface

Customization of the Abstract Generator Interface

Custom Fonts in Standalone Abstract Generator Interface

Customized Appearance of the Standalone Abstract Generator Interface

Customization of the Abstract Generation Flow

Abstract Generation Flow

Import Data in Abstract Generator

Generate Abstracts

Inspect the Results of Generated Abstracts

Export Abstracts

Generating Abstracts

File Menu in Standalone Abstract Generator

Creating a Library in Abstract Generator

Opening a Library in Abstract Generator

Troubleshoot Library Issues

Attaching Technology Information to a Library in Abstract Generator

Troubleshoot Technology Issues

Importing GDSII Information in Abstract Generator

lmporting OASIS Data in Abstract Generator

Importing LEF in Abstract Generator

Importing DEF in Abstract Generator

Importing Logical Data in Abstract Generator

Importing Options File in Abstract Generator

Creating an Abstract from a DEF Block

Exporting LEF in Abstract Generator

Troubleshoot Import and Export Issues

Specifying Global Options in General Options form

Viewing the Statistics Report in Abstract Generator

Bin Preferences for Abstract Generation

Creating a User Bin in Abstract Generator

Adding a User Bin in Abstract Generator

Renaming a User Bin in Abstract Generator

Deleting a User Bin in Abstract Generator

Setting Bin Options in Abstract Generator

Guidelines for Bin Options Form

Troubleshoot System Bin Issues

Cell Preferences for Abstract Generation

Selecting Cells Based on a Criteria in Abstract Generator

Revalidation of Cells with Invalid Views in Abstract Generator

Sorting Cells in Abstract Generator

Distributing Cells into Bins in Abstract Generator

Moving Cells Across Bins in Abstract Generator

Viewing and Editing Cell Properties

Viewing and Editing Cell Terminal Properties in Abstract Generator

Support for Inherited Connections in Abstract Generator

Viewing a Cell Status Report in Abstract Generator

Editing Cellviews in Virtuoso Layout Editor in Abstract Generator

Troubleshoot Cell Issues

Abstract Generation in Batch Mode

Abstract Generator Log, Replay, and Record Files

Specifying the CDS.log File Name

Message Filters in Abstract Generator

Exporting a Report in Abstract Generator

Recording Commands and Events in Abstract Generator

Replaying Commands in Abstract Generator

Conversion of Common Lisp Files to SKILL or TCL Format

Options and Status Files in Abstract Generator

Exporting Options File in Abstract Generator

Guidelines for Optimizing Abstract Generator Performance

3

Pins Step in Standalone Abstract Generation

Specifying Pin Mappings for Abstract Generation

Text Labels-to-Pins Mapping

Regular Expressions for Creating Pin Names

Pin Names

Customizing Text Labels for Abstract Generation

Setting PR Boundary Creation Options in Standalone Abstract Generation

Customizing Abstracts of Routed Blocks in Standalone Abstract Generator

N-Well and P-Well Pins Creation

N-Well Pins

P-Well Pins

Multiple N-Well and P-Well Pins

Troubleshoot Pin Issues

4

Extract Step in Standalone Abstract Generation

Specifying Layers and Geometries for Extraction

Layer Assignment Tables

Specifying General Options in G-Spec Builder Form

Relationship between Signal and Antenna Tabs

Must-Join and Must-Connect Relationships for Terminals

Antenna Generation for MUSTJOIN and MUSTJOINALLPORTS Terminals

Extracting Power Nets in Standalone Abstract Generator

Processing Antenna Information in Standalone Abstract Generator

FinFET Support in Abstract Generator

FDSOI Support in Abstract Generator

Antenna Calculation by Abstract Generator

Calculation of ANTENNAMAXCUTCAR

Keywords Used in Antenna Calculation

Checks Performed During Antenna Calculation

Comparison of Geometry Specifications for Antenna Regions and Antenna Extraction

Specifying Connectivity Information in Designs

Restrictions for Signal and Power Pin Geometry

Troubleshoot Extract Issues

5

Abstract Step in Standalone Abstract Generation

Customizing Pin Shapes in Standalone Abstract Generator

Square and Non-Square Boundary Pins

Specifying Power and Ground Rail Characteristics

Power Rail Scenarios

Abstracts for Routed Blocks with Power Rings

Boundary Pin Trimming

Modifying Blockage Geometry in the Abstract View

Performance Improvements for Generating Detailed Blockages

Control Spacing Value During Geometry Add Backs

Impact of Cutout and Spacing Options on Blockage Types

Pin Cutout Support on Metal Layers Above the Pin Layer

Routing Channel Creation when Generating Cover Blockages

Automatic Pin Stretching

Calculating Metal Layer Density

Density Calculation

Fracturing Pins and Blockages

Pin and Blockage Fracturing

Specifying Sites in Standalone Abstract Generator

Creating an Overlap Boundary

Retain Layout Information in the Abstract View

Troubleshoot Abstract Messages

Creation of Fill Blockages on Specific Layers

Bus Annotation in Abstract Generator

Support for EXCEPTPGNET LEF Attribute

Layout Dual View Support

Abstract Data Annotated in Layout Dual View

Troubleshoot Layout Messages

Support for Copying Mixed Signal Routing Constraints from Layout to Abstract View

6

Integrated Abstract Generator

Specifying Design Information in the Abstract Generator

Generating Abstracts

Viewing Results in the Abstract Generator Form

Viewing the Cell Report

Viewing Log Information

Viewing the List of Cells

Customizing Abstract Generator Flow Using SKILL Files

7

Dynamic Abstract Generation

Prerequisites for Dynamic Abstract Generation

Dynamic Abstract Generation Use Model

Dynamic Abstract Generation Commands

Abstracting Pcells

Loading and Saving an Options File for Dynamic Abstract Generation

Unabstracting Pcells

Highlighting Unabstracted Pcells

Marking or Unmarking Pcells for Abstraction

Specifying Advanced Dynamic Abstraction Rules

Specifying General Dynamic Abstraction Options

Specifying Extraction Options for Dynamic Abstraction

Specifying Antenna Options for Dynamic Abstraction

8

Multi-Patterning Technology Support in Abstract Generator

Prerequisites for Multi-Patterning Technology Support

Color Representation for Pins

Pins Step

Extract Step

Abstract Step

Color Representation for Blockages

Cover Blockage

Shrink Blockage

Detailed Blockage

Supported Blockage Colors in Multi-Patterning Technology

Support for Trim Metal

A

Virtuoso Abstract Generator Forms

Abstract Generator Form

Abstract Pcells Form

Add User Bin Form

Attach Technology Library Form

Cell Properties Form

Cell Report Window

Copy Bin Options Form

Delete User Bin Form

Distribute Cells Among Bins Form

Export LEF Form

Export Report Form

Export Options Form

General Options Form

General

Views

G-Spec Builder Form

Import DEF Form

Import Layout Form

Import LEF Form

Import Logical Form

Import Oasis Form

Import Options Form

Integrated Abstract Generator Form

Mark/Unmark Pcells for Abstraction Form

Move Selected Cells Form

New Library Window

Open Library Window

Rename User Bin Form

Replay Form

Running Step Pins Form

Map Tab

Text Tab

Boundary Tab

Blocks Tab

Running step Abstract Form

Adjust

Blockage

Density

Fracture

Site

Overlap

Running Step Extract Form

Signal Tab

Power Tab

Antenna Tab

General Tab

Save Dynamic Abstract Generation Options Form

General

Extraction

Antenna

Select Cells Form

Sort Cells Form

Specify SKILL Files Form

UnAbstract Pcells Form

B

Virtuoso Abstract Generator Environment Variables

List of Abstract Generator Environment Variables

optionsFile

showAbstractSection

showAntennaOptions

showExtractGspecTables

showExtractSection

showPinsSection

showOverlapBoundaryOption

showPinGroupingOptions

C

Abstract Generator Menu Commands

Standalone Abstract Generator Menu Bar

Dynamic Abstract Generator Context-Sensitive Menu

Layout Canvas Using the Context-Sensitive Menu

D

Library Design Guidelines

Guidelines for Designing a Cell Library

Guidelines for Designing Pins

Design IO, Corner Cells, and Blocks

Guidelines for Setting Pitch in a Cell Library

Guidelines for Setting Pitch for Layers with the Same Preferred Direction

Guidelines for Setting Pitch for Via Stacking

Guidelines for Designing a Gridded Library for Innovus

Guidelines for Converting an Existing Library into Gridded Library

Guidelines for Modeling Pins in a Cell Library

Power to Blockage Violations in Innovus

Virtual Tracks in Innovus

Guidelines for Centering On-grid Pins in Innovus

Routing Issues in Pins

Guidelines for Defining Blockages in a Cell Library

Pin Accessibility of Blockages in Abstract Generator

On-grid Versus Off-Grid Blockages in Abstract Generator

Guidelines for Setting Cell Porosity and High Density in a Cell Library

Pitch Routing in Abstract Generator

Pin Spacing in Abstract Generator

Pin Staggering in Abstract Generator

Tracks for Wide Wire Designs

Variable-Height and Multiple-Height Cells

Non-rectangular Blocks

E

Technology File Requirements for Abstract Generation

Modification of Technology Information

Technology File Requirements for Virtuoso Abstract Generator

Devices

Layer Definitions

Layer Names

Via Definitions

Physical Rules

Voltage Dependent and Layer-Purpose-Based Rules

Defining a Default Via in the OpenAccess Technology File

Requirements for Antenna Calculation

Requirements for Metal Density Calculation

Requirements for Viewing Data In Layout

Requirements for Specifying Place-and-Route Information

Troubleshoot Technology File-Related Issues in the Virtuoso Studio Design Environment

Troubleshoot Metal Layer Issues

Troubleshoot Layer Spacing Rules Issues

Troubleshoot Via Layers Issues

Troubleshoot Routing Layer Issues

Troubleshoot Minimum Width Value Issues

Troubleshoot Minimum Spacing Value Issues

Troubleshoot Cut Layer Issues

DATABASE MICRONS in the Exported LEF File

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