Excavating
Patent
1990-04-02
1992-04-21
Smith, Jerry
Excavating
G11C 2900
Patent
active
051075016
ABSTRACT:
All elements of a Content-Addressable Memory (CAM) (10) are tested by executing a predetermined set of sequences of the write and match-read operations. During each write operation, a separate one of a set of data words, consisting of the group of all zeros, all ones, a walking ones in a zero word, and a walking zero in a ones word, is written into the CAM for entry in each successive one of its rows of memory cells (14). During each match/read operation, a separate data word from this group is matched to a word stored in each of the rows while, simultaneously, a read operation is performed and the contents of a successive row are read to check for correspondence with a particular data word. A particular set of seven sequences of write and match/read operations is capable of achieving such testing.
REFERENCES:
patent: 3420991 (1969-01-01), Ling
patent: 3800286 (1974-03-01), Brown et al.
patent: 4377855 (1983-03-01), Lavi
patent: 4532606 (1985-07-01), Phelps
patent: 4559618 (1985-12-01), Houseman et al.
patent: 4661930 (1987-04-01), Tran
patent: 4680760 (1987-07-01), Giles et al.
patent: 4729117 (1988-03-01), Osaka
patent: 4862071 (1989-08-01), Sato et al.
patent: 4896322 (1990-01-01), Kraus et al.
patent: 4912710 (1990-03-01), Rolfe
AT&T Bell Laboratories
Chung Phung My
Smith Jerry
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