Content addressable memory having programmable combinational logic circuits
US7787275B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2008 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Apr 24, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C15/046
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A content addressable memory (CAM) device includes a plurality of independently configurable CAM groups, each CAM group including a number of CAM rows and a programmable combinational logic circuit. Each CAM row includes a plurality of CAM cells coupled to a match line that generates a row match signal during a compare operation between a search key and data stored in the CAM row. The programmable combinational logic circuit logically combines the row match signals to generate a corresponding group match signal according to a respective one of a plurality of selectable logical operations selected by a corresponding function select signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.