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AAEON AEC-6977 User Manual

Page 107

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E m b e d d e d C o n t r o l l e r

A E C - 6 9 7 7

Appendix D Electrical Specifications for I/O Ports

D-2

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