| 摘要 |
PURPOSE:To effectively control a data transmission from a slave transmission equipment at a master transmission equipment side, by setting or resetting the flag of the slave transmission equipment by a specific signal from the master transmission equipment, and deciding the start or the interruption of the data transmission at the slave transmission equipment according to the state of the flag. CONSTITUTION:A reception part A fetches the data of a format received from the master transmission equipment in a receiving buffer l1, and a reception control part 12 investigates the transmitting address data of the buffer 11, and when lt is addressed to its own station, it is fetched in a receiving register 13, and also, it is supplied to a command decoder 14. The received data stored at the receiving register 13 is fetched in a CPU receiving thc control of a CPU interface 15, and also, the decoder 14 performs the decoding process of a control signal (CONT) in the received data, and interprets the content of an instruction. Meanwhile, a transmission part B is constituted of a transmitting register 18 which stores data transmitted from the CPU at a buffer 17 through an interface C, and transmits it with a prescribed timing, and a transmission control part 19 which controls the transmission of the data to be transmitted corresponding to various kinds of transmssion control signals supplied from the CPU through the CPU interface 15. and the set state of a flag register 16.
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