| 摘要 |
A communication system includes a plurality of boundary scan elements including input and output terminals and a plurality of boundary cells individually assigned to the respective input terminals and output terminals, a plurality of data output units connected parallel to the boundary scan elements, and a communication controller connected to the boundary scan elements in series. The communication controller transmits and receives through the boundary scan elements control data for individually controlling the data output units. A signal data communication line is connected with the data output units in parallel, and a signal processing unit is connected with the signal data communication line and the communication controller for transmitting output data from the data output units under a control of the communication controller.
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