Dynamically partitioned CAM array

Details Dynamically partitioned CAM array Dynamically partitioned CAM array

2008-11-20

2010-12-07

Hoang, Huan (Department: 2827)

Static information storage and retrieval

Associative memories

Compare/search/match circuit

C365S049180, C365S049100

Reexamination Certificate

active

07848129

ABSTRACT:
A content addressable memory (CAM) device includes a comparand register, a CAM array, and partition logic. The comparand register has inputs to receive a search key, and outputs coupled to the CAM array, which includes a plurality of individually selectable sub-arrays. Each sub-array includes a number of rows of CAM cells and a control circuit, wherein each row of CAM cells is coupled to a match line, and wherein the control circuit has an input to receive a corresponding sub-array enable signal. The partition logic has an input to receive a partition select signal, and is configured to generate the sub-array enable signals in response to the partition select signal. The control circuits selectively propagate the search key through the sub-arrays in response to the sub-array enable signals.

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