COMMUNICATION PROCESSOR

摘要

PURPOSE:To improve the transmitting throughput of a communication system by transmitting the transfer request signal and the transfer request confirmation signal for both reception data and status between a direct memory access (DMA) control part and a serial communication control part. CONSTITUTION:Both the transfer request signal and the transfer request confirmation signal for reception data and reception status are transmitted between a DMA control part DMAC of a communication processor NPU and a serial communication control part SIO. The communication data and the reception status of plural frames transferred continuously are transferred to a random access memory RAM for temporary storage via the DMAC without requiring the processing carried out by a central processing part for each frame.