DMA TRANSFER CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To efficiently transfer data according to a handshake method without shortening the internal clock cycle based on a burst transfer method. SOLUTION: This DMA transfer control device includes a plurality of buffer memories 103 accumulating data, a plurality of handshake circuits 106 arranged in parallel to the respective buffer memories according to capacity of the buffer memories, a reading control circuit 124 having a reading pointer performing counting in input of a signal requiring data reading from another integrated circuit, a writing control circuit 207 having a writing point performing counting in input of a signal requiring data writing from another integrated circuit, and a transfer demanding signal generation circuit 117 selecting and transmitting a data transfer demanding signal demanding transfer of the data according to the reading pointer or the writing pointer.