Memory having multiple write ports and multiple control memory units, and method of operation

摘要

A control unit is described that allows multiple data memory units to be combined to construct a memory having a greater number of write ports than is selectable from a design library. A control unit is provided using control memory units to keep track of which of the data memory units contain the most recently written version of the data for each address of the constructed memory. The data memory units and control memory units do not require more write ports than the maximum number available for memory devices selectable from the design library.