Product Documentation
Virtuoso Layout Suite XL: Connectivity Driven Editing User Guide
Product Version IC23.1, November 2023

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Library and Attributes Mapping File Syntax

This topic describes the Virtuoso® Layout Suite XL library and attributes mapping (LAM) file, that supports the physical hierarchy configuration functionality.

The LAM file stores the symbol properties that drive layout generation, component type information for a given library, and library and cell-level mapping information. The file is called cph.lam and is created automatically when you convert your library data to use the Layout XL schema using the cphUprevLibrary SKILL function. For more information, see cphUprevLibrary in the Virtuoso Layout Suite SKILL Reference.

You can override the settings in the library LAM file by creating your own version called library.lam and placing it in one of the locations defined in your setup.loc file. For more information, see LAM File Locations.

You cannot export a LAM file from the Configure Physical Hierarchy window and Virtuoso does not provide any graphical user interface to help you create or edit a LAM file. Cadence recommends that your CAD group generate the required LAM files for a given GPDK from your golden library sources, or that you use a text or XML editor to create or edit your own LAM files.

Related Topics

Physical Hierarchy Configuration

LAM File Locations

Basic LAM File Structure

LAM File Logical Section

LAM File Physical Section

LAM File Component Type Section

LAM File Mapping Section

Sample LAM File


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