| 摘要 |
PURPOSE:To enhance a degree of multiplexing to reduce the number of wirings and simplify the hard constitution by using an address bus for a multiplexing/ demultiplexing circuit to give an address number to each channel. CONSTITUTION:In an example of the constitution of a receiving part of a channel corresponding part (CH') 17', an address signal (i) of a pertinent channel (i) which is preliminarily set to each channel corresponding part (CH') 17'-i by an address setting circuit 26 and a reception address signal (RADD) 3' connected through a bus are compared with each other by a comparing circuit 27, and a write signal 24 is outputted to a buffer memory 25 when they coincide with each other. In this case, data to the channel corresponding part (CH') 17'-i corresponding to the channel (i) is sent to the bus to which an internal reception multiplex signal (RDATA) 2 is connected, and data is written in the buffer memory 25. Contents of the buffer memory 25 are read out in the original data speed to become a reproduced data signal 4-i. By the similar operation, transmission data 5-i is multiplexed into an internal transmission multiplex signal (SDATA) 6. |
