CAM asynchronous search-line switching
US7688611B2 · kind B2 · utility
8Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2008 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Mar 12, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/02
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This patent describes a method for switching search-lines in a Content Addressable Memory (CAM) asynchronously to improve CAM speed and reduce CAM noise without affecting its power performance. This is accomplished by resetting the match-lines prior to initiating a search and then applying a search word to the search-lines. A reference match-line is provided to generate the timing for the search operation and provide the timing for the asynchronous application of the search data on the SLs. Additional noise reduction is achieved through the staggering of the search data application on the SLs through programmable delay elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.