| 摘要 |
PURPOSE:To enable transmission-side and reception-side microcomputers to access transmission and reception data buffers at timings independent of each other and to keep coincidence between transmission data and reception data. CONSTITUTION:A transmission-side microcomputer 1 writes respective monitor and control data in addresses for respective data on a transmission data buffer 2 as main data 3 and auxiliary data 4. A data transmission part 5 reads out and transmits contents of the transmission data buffer 2 with one byte or the like as the data transmission unit and writes them in a reception data buffer 6. A reception-side microcomputer 9 reads out two data from addresses for each data on the reception data buffer 6 asynchronously with write to the transmission data buffer 2; and when values of read main data 7 and auxiliary data 8 are equal to each other, this value is used as one monitor and control data. |
