Content addressable memory to identify subtag matches

Details Content addressable memory to identify subtag matches Content addressable memory to identify subtag matches

2007-02-20

2007-02-20

Verbrugge, Kevin (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S003000, C365S049130

Reexamination Certificate

active

10811288

ABSTRACT:
The disclosure includes a description of a content addressable memory (CAM) that includes at least one tag input and at least one random access memory. The CAM also includes circuitry to perform multiple read operations of the at least one random access memory with multiple, different ones of the read operations specifying an address based on different subsets of tag bits. The circuitry includes digital logic circuitry coupled to the at least one random access memory to determine whether a lookup tag matches a subset of the different subsets of tag bits.

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Description and Diagram of Conventional CAM in Intel's IXP2400 Network Processor; one page.
Intel Technology Journal, The Next Generation of Intel IXP Network Processors, vol. 06, Issue 03, Aug. 15, 2002, pp. 6-18.
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Pending U.S. Appl. No. 10/811,125, filed Mar. 25, 2006, inventor: Rosenbluth; office action dated Sep. 19, 2006.

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