| 摘要 |
PROBLEM TO BE SOLVED: To provide a sequence circuit for improving the throughput of data transfer. SOLUTION: This sequence circuit 3 for controlling the data transfer provided in a data transfer device 4 for performing the data transfer at a high speed between a main memory unit 6 and another device is provided with plural sub sequence circuits for taking partial charges of the various kinds of functions required for the control of the data transfer for the respective functions and being respectively independently operated and is provided with a sequence switch circuit 35 for connecting the processings of the plural sub sequence circuits and operating them in a prescribed order. Also, the sequence switch circuit 35 performs response standby to access to the main memory unit 6 instead of the processings of the plural sub sequence circuits.
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