TVIP Analog Workspace

Guides

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

Configure the setup script:
- Rename setup-template.sh to setup.sh
- The .bashrc file will automatically source setup.sh to configure your environment
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