TVIP Analog Workspace

TVIP Analog Workspace

Analog Layout Guide

Matching, common‑centroid, routing, and guard rings.

Power Grids in VLSI

PDN straps, rings, decaps, and IR/EM tips.

Running DRC

PVS presets, run directory, and common fixes.

Impedance Matching

Two‑port models and conjugate matching basics.

Git Guide

Branching, PR flow, and useful commands.

Setup Instructions

General Setup

  1. Configure the setup script:

    • Rename setup-template.sh to setup.sh
    • The .bashrc file will automatically source setup.sh to configure your environment

  2. Populate the required paths in setup.sh:

    • LM_LICENSE_FILE: Path to your license file
    • CDS_HOME: Path to your Cadence installation
    • PVS_HOME: Path to your PVS installation
    • XCELIUM_HOME: Path to your Xcelium installation
    • SPECTRE_HOME: Path to your Spectre installation

Server-Specific Configuration

BWRC Servers

For BWRC servers, use the configuration as shown in the existing setup.sh:

# License file
source /tools/flexlm/flexlm.sh
 
# Cadence
export CDS_HOME=/tools/cadence/IC/IC231_ISR9
 
# PVS
export PVS_HOME=/tools/cadence/PVS/PVS231
 
# Xcelium
export XCELIUM_HOME=/tools/cadence/XCELIUM/XCELIUM231
 
# Spectre
export SPECTRE_HOME=/tools/cadence/SPECTRE/SPECTRE231

EDA Servers

For EDA servers, configure your setup.sh as follows:

# License file
export LM_LICENSE_FILE=<POPULATE ME>
 
# Cadence
export CDS_HOME=/share/instsww/cadence/IC618
 
# PVS
export PVS_HOME=<POPULATE ME>
 
# Xcelium
export XCELIUM_HOME=<POPULATE ME>
 
# Spectre
export SPECTRE_HOME=<POPULATE ME>

Alcatraz Server

For Alcatraz server, use:

# License file
export LM_LICENSE_FILE=<POPULATE ME>
 
# Cadence
export CDS_HOME=/usr/eesww/cadence/IC618
 
# PVS
export PVS_HOME=<POPULATE ME>
 
# Xcelium
export XCELIUM_HOME=<POPULATE ME>
 
# Spectre
export SPECTRE_HOME=<POPULATE ME>

Optional Tools

The workspace also supports optional tools that can be uncommented and configured if available:

  • EMX: Uncomment and set EMX_HOME if you have EMX installed

Usage

After setup, simply source the .bashrc file or start a new shell session. The environment will be automatically configured for Cadence Virtuoso development with the Skywater 130nm PDK.

source .bashrc

Then start Virtuoso:

virtuoso &

Licensing

The custom designs in this repository are licensed under the BSD 3-Clause license, as specified in the LICENSE file.

The Sky130 PDK resources provided by Cadence are covered by the Cadence Public License Version 1.0. A copy of this license, LICENSE.cadence, is included in the directories containing these resources.

Analog Layout Guide