Aaeon AEC-6977, Руководство пользователя

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Appendix C – Electrical Specifications for I/O Ports 98
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6977
D.1 DIO Programming
AEC-6977 utilizes FINTEK F81866 chipset as its Digital I/O controller.
Below are the procedures to complete its configuration and the AAEON initial
watchdog timer program is also attached based on which you can develop customized
program to fit your application.
There are three steps to complete the configuration setup: (1) Enter
the MB PnP Mode; (2) Modify the data of configuration registers; (3)
Exit the MB PnP Mode. Undesired result may occur if the MB PnP
Mode is not exited normally.(These three steps are the same as programming WDT)
Please be noted, the Isolation protection DIO is fixed 4 Input / 4 Output type.
DIO_P#1~4 : Input
DIO_P#5~8 : Output