FIFO TYPE DATA INPUT-OUTPUT DEVICE AND FIFO TYPE DATA INPUT-OUTPUT METHOD

摘要

PROBLEM TO BE SOLVED: To provide a FIFO type data input-output device capable of performing high-speed data fetching and whose circuit is miniaturized.;SOLUTION: Mutual data writing and readings among adjacent entries in a storage circuit are made to be executed by applying instruction signals of mutual data input-output processings among adjacent entries which include data input-output directions to respective entries in the storage circuit having plural entries which function respectively as a data storage area. A control signal to be outputted by a control circuit includes a load signal instructing to latch data from a data line to a self-entry and a shift and write signal instructing to latch the stored data of the adjacent entry of the left side to the self-entry and selected data are outputted by outputting these signals to respective entries.;COPYRIGHT: (C)2001,JPO