| 摘要 |
PURPOSE:To use only one kind of communication processing circuit by providing plural different functions in advance and allowing only the required function to be selected by an external input. CONSTITUTION:An address designation input is fed also to a control circuit 101, and when an address is 0, the operation for a central stations is conducted, when the address is 1-D, the operation for a terminal station is conducted and when the address is E, F, the operation for a terminal station handling an external load outputtinh an analog signal is conducted. The control circuit 101 consists of a sequence counter counting a clock synchronized with a reception data from a transmission line 20 and a sequence decoder decoding the output of the sequence counter and generating a control signal. Furthermore, the function is switched by supplying the address designation to the sequence decoder. |
