C&T Solution CT-MCL01 Series, User Manual

Page: 69 / 72

CT-MCL01 l User’s Manual
69
General Purpose Input Output
GPI and GPO pins may be implemented as GPIO.
GPIO Configuration
Board Design
The GPIO function is provided by a Nuvoton NCT6106D, and it can be accessed through its GPIO index/data
port. The index port is the base a0 and the data port is the base a1. To access the GPIO
register, write index to the index port, and then read/write from/to data port. The configuration is
described as below.
Super I/O entry key: 0x87
Appendix – WDT & GPIO
Signal
I/O
Description
GPO[0:3] O
General purpose output pins. Upon a hardware
reset, these outputs should be low.
GPI[0:3] I
General purpose input pins. Pulled high
internally on the Module.
Pin#
GPIO#
Default Configuration
1 +5V_DUAL
2 GND
3 GP34 GPO0
4 GP30 GPI0
5 GP35 GPO1
6 GP31 GPI1
7 GP36 GPO2
8 GP32 GPI2
9 GP37 GPO3
10 GP33 GPI3
Notes
1. Output pin default setting is “HIGH”
Index Port 0x2E
Data Port 0x2F