Content addressable memory having read/write capabilities...

Details Content addressable memory having read/write capabilities... Content addressable memory having read/write capabilities...

G - Physics

11

C

G11C 15/00 (2006.01) G11C 15/04 (2006.01) G11C 29/00 (2006.01) G11C 29/14 (2006.01)

Patent

CA 2318019

A content addressable memory (CAM) is provided. The CAM includes a search port for performing search operations at each clock cycle and a maintenance port for writing and reading data to address locations of the content addressable memory. An interlock signal is also provided and is communicated from the search port to the maintenance port to establish when writing and reading of data is to be performed to the content addressable memory so that the search operations continue uninterrupted at each clock cycle. Preferably, the interlock signal is communicated at an end of a search operation and at a beginning of a search pre-charge operation. The maintenance port is configured to set-up a writing operation at a beginning of a clock cycle and execute the write operation at the end of the search operation and the beginning of the search pre-charge operation. In another preferred example, search operations can be deselected at any time, yet any desired writing and reading operation can still be executed. At anytime therefore, the search operations can resume operation at each cycle, without being affected by a read or write operation.

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