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B.1 GPI/O Programming
GPI/O (General Purpose Input/Output) pins are provided for custom system design. This
appendix provides definitions and its default setting for the ten GPI/O pins in the System
Board series. The pin definition is shown in the following table:
Table C-1: J15 – GPI/O Connector
Read the GPI Pin (1/3/5/7) status form I/O port 801H bit (0/1/2/3).
The bit is Set/Clear indicated High/Low
Control the GPO pin (2/3/6/8) level from I/O port 801H bit (4/5/6/7).
The bit is Set/Clear indicated output High/Low
Note: All of these GPIO pins are 8mA digital open-drain buffer and internal
pull-up.
D E L T A
C O M P O N E N T S
G m b H
Auweg27, D-79761 Waldshut-Tiengen Seite - 62 -
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