CADENCE CONFIDENTIAL 1CADENCE DESIGN SYSTEMS, INC. Cadence Front to Back End Adil Sarwar March 2004.

CADENCE CONFIDENTIAL1 CADENCE DESIGN SYSTEMS, INC.

Cadence Front to Back EndAdil Sarwar

March 2004

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Presentation Overview

• Tool Setup

• Virtuoso Schematic Editor (Composer) for design entry

• Analog Design Environment (Analog Artist) for netlisting and simulation.

• Virtuoso LE for layout

• Diva for physical Verification

• Mixed-signal simulations / AMS Designer

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Tool Setup

• Source new cshrc file , IC 5.0 installed

• Icfb –W -> to check the version of tool

• cds.lib -> file in directory from where you want to run the tool

• .cdsinit and .env files for initialization and bindkeys

• icms , layoutPlus and icfb

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Cadence Flow Diagram

Virtuoso Custom Router

Virtuoso Layout Editor

Virtuoso XL

Physical Design Physical Verification

DivaLPEDRC LVS

Virtuoso Schematic Editor

GDSII

sche

mat

ics

back annotation

PCell Libraries andtechnology files

Rules files, technology files

Affirma Spectre Analog Simulator

Parasitic re-simulation

Stream

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CIW Window

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Library Manager

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Creating Directories and cds.lib file

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Creating Schematic Cell

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Inverter Schematic

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CDF Parameters

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Adding Pins and Wire names

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Virtuoso – Cell Creation and LSW

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Virtuoso layout

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Inverter Layout

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Giving Terminal Names

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Diva DRC

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DRC Results in CIW Window

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LVS Setup

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LVS Results

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Model and Libraries

• Models from NCSU Kit or From Mosis site

• analogLib library was used for voltage sources and gnd

• basic library was used for pins

• dfII database and environment was used

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Tutorials and Useful sites

• Tutorials available in Cadence Setup

- Go to install directory, the tutorials should be here

- <install_dir>/tools/dfII/samples/tutorials

- cp –r cell_design ~/

- http://www.owlnet.rice.edu/~elec522/w9/virtuoso_layout/

• http://www.ee.princeton.edu/~cadence/usr/

• NCSU site for tarred kit