| 摘要 |
PURPOSE:To transfer data with high reliability at high speed even when the distance of a system bus is extended to several dozens of meters at the device to store data from a first unit provided with a CPU through the system bus to a memory provided at a second unit. CONSTITUTION:This device is provided with a latch means 6 to output data and 8 write command from 21 first unit 1, to output parity signals and to hold the data in a second unit 2 at the timing of the write command, and judging means 5 to perform parity check at that timing, to output a second write command for storing the data held at the latch means 6 in a memory 3 when the parity check is normal, and to request the retransmission of the data by outputting a parity error signal when the parity check is abnormal. |
