Invention Grant
- Patent Title: Dynamically partitioned CAM array
- Patent Title (中): 动态分区CAM阵列
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Application No.: US12275160Application Date: 2008-11-20
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Publication No.: US07848129B1Publication Date: 2010-12-07
- Inventor: Chetan Deshpande , Vinay Iyengar , Bindiganavale S. Nataraj
- Applicant: Chetan Deshpande , Vinay Iyengar , Bindiganavale S. Nataraj
- Applicant Address: US CA Santa Clara
- Assignee: NetLogic Microsystems, Inc.
- Current Assignee: NetLogic Microsystems, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Mahamedi Paradice Kreisman LLP
- Agent William L. Paradice, III
- Main IPC: G11C15/00
- IPC: G11C15/00

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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