| 摘要 |
PROBLEM TO BE SOLVED: To reduce the load of command issue on a central processing unit(CPU) when an initiator function of SBP-2(serial bus protocol-2) is actualized. SOLUTION: This device is provided with a sequence control circuit 29 which is actuated by a CPU 10 to control a command issue sequence, a packet processing circuit 28 which constitutes an operation request block(ORB) to be issued in transmit packets and extract a status from a received packet, a buffer 30 which stores a command ORB registered by the CPU 10, a buffer 31 which stores a management ORB registered by the CPU 10, a buffer 32 which stores the received status for an issued management ORB and passes it to the CPU 10, and a buffer 33 which stores the received status for the issued command ORB and passes it to the CPU 10.
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