Static information storage and retrieval – Associative memories
Reexamination Certificate
2010-10-21
2011-10-04
Lappas, Jason (Department: 2827)
Static information storage and retrieval
Associative memories
C365S049170, C365S049180
Reexamination Certificate
active
08031501
ABSTRACT:
Present embodiments describe a CAM device having a segmented CAM array. Each segment of the CAM array, or cell blocks, includes one or more rows of CAM cells. One or more of the cell blocks in the CAM array are selectively enabled during a search operation based on a detected matching condition of another cell block. By selectively enabling cell blocks during search operations only when needed, energy consumption is reduced. Selectively enabling a cell block includes selectively pre-charging match lines to the cell block, selectively enabling word lines to the cell block, and selectively enabling comparand line to the cell block. In accordance with certain embodiments, the CAM device is configurable to perform search operations in a pipelined manner. Accordingly, the CAM device is capable of performing multiple search operations simultaneously.
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Deshpande Chetan
Iyengar Vinay
Khanna Sandeep
Nataraj Bindiganavale S.
Lappas Jason
Mahamedi Paradice Kreisman LLP
NetLogic Microsystems, Inc.
Paradice III William L.
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