Range checking content addressable memory array

Details Range checking content addressable memory array Range checking content addressable memory array

2008-07-03

2010-06-29

Nguyen, Tan T. (Department: 2827)

Static information storage and retrieval

Associative memories

Compare/search/match circuit

C365S049100, C365S049150

Reexamination Certificate

active

07746679

ABSTRACT:
A disclosed embodiment is a range checking CAM array comprising a plurality of words, where each of the plurality of words comprises a plurality of bound check cells. Each of the plurality of bound check cells outputs a corresponding plurality of match signals and a corresponding plurality of bound check signals. The corresponding plurality of match signals and corresponding plurality of bound check signals are combined to produce a range check output indicating whether data on a data input bus is within a target range. The plurality of bound check cells may be coupled to form at least one cascade of bound check cells, where each cascade of bound check cells may be terminated at a ripple logic. The CAM array produces a final range check output based on the corresponding plurality of match signals and the corresponding plurality of bound check signals.

REFERENCES:
patent: 6512684 (2003-01-01), Gordon et al.
patent: 6898099 (2005-05-01), Srinivasan et al.

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