B: gpi/o p, Ppendix, Rogramming – NEXCOM NISE 101 User Manual
Page 71: Guide
Advertising
Copyright © 2010 NEXCOM International Co., Ltd. All Rights Reserved.
58
Appendix B: GPI/O Programming Guide
NISE 101 User Manual
A
ppendix
B: Gpi/O p
rOGrAmminG
Guide
The NISB101 onboard GPIO function is carried out by the ITE IT8712F I/O
chip. The board uses the IT8712F’s GP20~27 and GP30~37 pins to support
16-channel GPIO interface. The default setup is 8 output channel and 8
input channel.
The I/O decode address are:
Output port: 0x281
Bit[7:0] = GP27~GP20
Input port: 0x281
Bit[7:0] = GP37~GP30
Pin
Description
Pin
Description
1
GPO20
2
GPI30
3
GPO21
4
GPI31
5
GPO22
6
GPI32
7
GPO23
8
GPI33
9
GPO24
10
GPI34
11
GPO25
12
GPI35
13
GPO26
14
GPI36
15
GPO27
16
GPI37
17
Clock
18
Data
19
GND
20
5V
Advertising