Dual-port functionality for a single-port cell memory device

摘要: A network node ( 5 ) including a line card 20 for packet-based data communications is disclosed. The includes transmit FIFO buffer 24 T) and receive R), buffering within the ). Each of buffers T, R) operate in dual-port fashion, receiving asynchronous read write requests, reading words from writing to R). each include memory array 45 conventional single port random access cells, example static RAM cells. Clock cycles are assigned by as internal cycles, alternating fashion. 42 receives input words, schedules double-data-word upon pair next cycle. request 44 strobes, or enable signals, downstream function, two such By converting requests into scheduled reads writes, respectively, buffers.