Toshiba E-STUDIO520 - Input;Output Signals

e-STUDIO520/600/720/850 REVERSING AUTOMATIC DOCUMENT FEEDER (RADF) March 2005 © TOSHIBA TEC
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16.12 Input/Output Signals
1) TXD/ACK/REQ signals
Fig.16-103
This is an input circuit to communicate with the engine. “1” substitutes 5 V and “0” substitutes 0 V.
The same logic is used in both the connector and CPU input port.