Detection of bit errors in maskable content addressable...

Details Detection of bit errors in maskable content addressable... Detection of bit errors in maskable content addressable...

2006-08-29

2006-08-29

Lamarre, Guy (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Memory testing

C714S763000, C714S773000, C714S768000

Reexamination Certificate

active

07100097

ABSTRACT:
Parity and mask bit(s) are stored in a random access memory (RAM) that is coupled to a CAM. This CAM may be part of a TLB. The parity and mask bits(s) are stored in conjunction with the CAM entry write. Upon a CAM query match, the reference parity bit(s) and mask bit(s) stored at the address output by the CAM are output from the RAM. These reference parity bit(s) are compared to parity bit(s) generated from a query data value that is masked by the retrieved mask bit(s). In the absence of a CAM or RAM bit error, the reference parity bit(s) from the RAM and the parity bit(s) generated from the masked query data will match. If a CAM or RAM bit error occurred, these two sets of parity bit(s) will not match and thus an error will be detected. This error may be used as an indication that a false CAM match has occurred.

REFERENCES:
patent: 4065756 (1977-12-01), Panigrahi
patent: 4996666 (1991-02-01), Duluk, Jr.
patent: 5453999 (1995-09-01), Michaelson et al.
patent: 6067656 (2000-05-01), Rusu et al.
patent: 6430073 (2002-08-01), Batson et al.
patent: 6535452 (2003-03-01), Okuda et al.
patent: 6657878 (2003-12-01), Lien et al.
patent: 6700827 (2004-03-01), Lien et al.
patent: 6718494 (2004-04-01), Jamil et al.

Affiliated with

Also associated with

Rating

Detection of bit errors in maskable content addressable... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detection of bit errors in maskable content addressable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of bit errors in maskable content addressable... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3643327