N-way mode content addressable memory array

Details N-way mode content addressable memory array N-way mode content addressable memory array

2011-01-11

2011-01-11

Elms, Richard (Department: 2824)

Static information storage and retrieval

Associative memories

Segmented/partitioned of cells

C365S049100, C365S049170

Reexamination Certificate

active

07869238

ABSTRACT:
An N-way mode CAM (content addressable memory) array includes M rows that each contain N subwords. Each of the N subwords has a respective mode cell. Additionally, a mode input bus is coupled to each mode cell of each of the N subwords, and a data input bus is coupled to each of the M rows. The mode input bus and the data input bus can uniquely identify as a match a single subword or a plurality of subwords in one of the M rows during a search operation. The N-way mode CAM further includes a row address encoder/generator coupled to each of the M rows, and an address output bus coupled to each of the row address encoder/generators. The mode input bus is also coupled to each of the row address encoder/generators. A uniquely identified single subword address may be outputted on the address output bus.

REFERENCES:
patent: 6771525 (2004-08-01), Roth
patent: 7466576 (2008-12-01), Narayanaswamy et al.
patent: 7495977 (2009-02-01), Moscaluk

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