Pseudo ternary content addressable memory device having row redundancy and method therefor
US7221575B1 · kind B1 · utility
6Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2005 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Nov 17, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/816
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A pseudo ternary content addressable memory (PTCAM) device (100) can include a number of PTCAM blocks (102-0 to 102-63), each of which can include a number of standard PTCAM rows (106-0 to 106-63) and a standard memory row (104-0 to 104-63) for storing and providing mask information for the PTCAM rows. Redundancy for replacing a defective standard PTCAM row can be provided by a redundant section (108) that include fewer PTCAM rows than in a PTCAM block (102-0 to 102-63). Non-defective PTCAM rows within a standard PTCAM block containing a defective PTCAM row can continue to operate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.