Dual port read/write register file memory

Details Dual port read/write register file memory Dual port read/write register file memory

G - Physics

11

C

352/82.24, 352/4

G11C 7/00 (2006.01) G11C 8/16 (2006.01)

Patent

CA 2005953

ABSTRACT OF THE DISCLOSURE A dual port read/write register file memory includes means for performing a read/modify write cycle of operation within a single system cycle of operation. The register file memory is constructed from one or more (RAM) addressable multibit storage arrays organized to form a dual read port, single write port RAM. Additionally, the register file includes a plurality of clocked input registers arranged in pairs for storing command, address and data signals for two write ports. The different pairs of registers are connected as inputs to a first set of multiplexer circuits whose outputs connect to the write control signal, address and data inputs of the single write port. The single write port of the register file memory is enabled for writing twice during each cycle. This allows data clocked into the input registers during the previous cycle to be written sequentially into the register file storage locations. By writing data into the input registers instead of the register file memory in a previous cycle, the time required for writing is reduced to a minimum.

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