Magma Design Automation, Inc.

Michael A Riepe

Hamid Savoj

Timothy Michael Burks

Robert Swanson

Lukas Van Ginneken

Karen F Vahtra

Karen E Vahtra

A method for modeling integrated circuit designs in a hierarchical design automation system which utilizes a block abstraction including therein set of all database objects (cells, nets, wires, vias, and blockages) that are necessary to achieve accurate placement, routing, extraction, simulation, and verification of the block's ancestors in the hierarchy.

Representing the design of a sub-module in a hierarchical integrated circuit design and analysis system

What is disclosed is a method for budgeting timing in a hierarchically decomposed integrated circuit design, which includes: 1) optimizing at least one path through block pins, the optimization resulting in assigned gains for all the cells along said at least one path; 2) performing timing analysis on the at least one path, the timing analysis using the assigned gains in order to generate arrival times for signals at said block pins; and 3) deriving a tinting budget by examining said generated arrival times at said block pins.

Method for generating design constraints for modules in a hierarchical integrated circuit design system

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San Jose, CA, United States of America

Michael A Riepe