Clock skew verification methodology for grid-based design
US6941532B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2001 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Oct 17, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/396
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for determining clock insertion delays for a microprocessor design having a grid-based clock distribution. The method includes partitioning the complete clock net into a global clock net and a plurality of local clock nets, simulating a load for each of the local clock nets, simulating the global clock net, and combining the simulations to form the complete clock net. The method may further include evaluating the combination to determine whether the results converge and storing the simulation results in a Clock Data Model. When the results do not converge, the method re-simulates at least one of the local clock nets and re-simulates the global clock net. The Clock Data Model collects, manages, retrieves, and queries all of the simulation information. The method may further analyze the complete clock net to predict the clock skew for a given data transfer path for potential redesign.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.