| 摘要 |
<p>PURPOSE:To obtain a digital signal transmitter-receiver capable of preventing the malfunction of a microcomputer at the time of the occurrence of an error of an input output section with simple circuit configuration. CONSTITUTION:When the error of asynchronization between a digital signal and a control signal takes place in an input output section 1 at a reception side, a transistor(TR) 1 is turned on by an error signal outputted from the error terminal 1b of the input/output section 1 and TRs 2, 3 are sequentially turned on. Then the control signal input terminal 2a of a microcomputer 2 is connected to ground by the TR 3 to prevent an input from being given from the control signal input terminal 1a of the input/output section 1 to the control signal input terminal 2a of the microcomputer 2, thereby preventing the malfunction of the reception side due to the microcomputer 2. Thus, the malfunction of the microcomputer on the occurrence of an error of an input/output section is prevented with simple circuit configuration.</p> |
