ADLINK Express-BASE - Manual (Page 33)

Page 33 Express-BASE User’s Manual
CNY2-3: Digital I/O
The Express-Base provides
GPIO expansion for I²C
applications via a Phillips
PCA955 with 16-bit I²C
I/O port and interrupt.
Pin Signal Pin Signal
1 I/O 0 11 GND
2 I/O 1 12 GND
3 I/O 2 13 GND
4 I/O 3 14 GND
5 I/O 4 15 GND
6 I/O 5 16 GND
7 I/O 6 17 GND
8 I/O 7 18 GND
9 INT# 19 BATLOW#
10 3V3 20 +3.3V
Pin Signal Pin Signal
1 Power LED 11 Speaker
2 Power LED 12 Speaker
3 Power LED 13 Speaker
4 Keyboard Lock 14 Speaker
5 Keyboard Lock 15 RESET
6 NC 16 RESET
7 NC 17 HDD LED
8 NC 18 HDD LED
9 NC 19 Power Button
10 NC 20 Power Button
CN29: Miscellaneous
Connector
6.17 Other Connectors
1 11
10 20
CN25: GPIO Header
GPIOs of CN25 come from
the COM Express module.
Pin Signal Pin Signal
1 GPI0 2 GPO0
3 GPI1 4 GPO1
5 GPI2 6 GPO2
7 GPI3 8 GPO3
1 2
7 8