DATA TRANSFER DEVICE AND ITS DATA TRANSFER METHOD

摘要

PROBLEM TO BE SOLVED: To provide a data transfer device and its data transfer method for simultaneously generating the data transfer of two groups in a system constituted of two or more buses and data processors. SOLUTION: The data transfer device is provided with a data conversion means for converting address information and data information into information for a multiplex bus and a cycle control means for controlling the generation cycle of the multiplex bus. When data transfer to the 2nd data processor by using the 1st data processor as a bus master and data transfer to the 1st data processor by using the 2nd data processor as a bus master are simultaneously generated, data are transferred from the 1st data processor in a period between a cycle for transferring the address information and a cycle for transferring the data information from the 2nd data processor.