DATA COMMUNICATION DEVICE

摘要

PROBLEM TO BE SOLVED: To reduce the frequency of interruption during data transmission/reception in communication between the software modules of a processor.

SOLUTION: A data storage area 210 and a process request area 220 that indicates presence of a process request for data transmission are secured on a memory 30. On receiving a request for data transmission from a transmission module 101, a data transmission part 300 stores data in the data storage area 210 and then writes the process request in the process request area 220 to interrupt a process request accepting part 400 only when the process request is not yet written in the process request area 220. The process request accepting part 400 confirms that the process request has been written in the process request area 220, then clears the process request, and informs a reception module 102 that the data has been stored in the data storage area 210. A data acquisition part 500 acquires the data from the data storage area 210 on receiving a request for data reception from the reception module 102.

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