Multiple-power-domain static timing analysis
US8321824B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2009 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Dec 25, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2119/12
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of a computer system, a method, an integrated circuit and a computer-program product (i.e., software) for use with the computer system are described. These devices and techniques may be used to perform STA for circuits that include multiple power domains. Power-domain crossing information and optionally the delay in each power domain can be propagated during the full circuit graph-based STA to accurately perform STA without enumerating all paths. Some embodiments can use a tag-based engine to track power-domain crossing(s) during graph-based STA. If a power-domain is crossed in a path, pessimism may be added to the cumulative delay at the end point of the path. For those paths that do not cross a power domain, pessimism may be removed from the cumulative delay at their end points. In some embodiments, pessimism may be removed from the cumulative delay at end points for paths that cross power domains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.