System Installation
WADE-8021 User’s Manual
3-6
3.6
GPIO
The motherboard provides 8 input / output ports that can be individually
configured
to perform a simple basic I/O function.
GPIO Pin Assignment
The WADE-8021 provides 8 input/output ports that can be individually configured
to perform a simple basic I/O function. Users can configure each individual port to
become an input or output port by programming register bit of I/O Selection. To
invert port value, the setting of Inversion Register has to be made. Port values can be
set to read or write through Data Register.
The GPIO port is located on J11 shown as follows. Please note:
Do not short the Pin
9 and Pin 10 of the JP11.
J11 : General Purpose I/O Connector
PIN No. Signal Description PIN No.
Signal Description
1 GPIO70 2 GPIO74
3 GPIO71 4 GPIO75
5 GPIO72 6 GPIO76
7 GPIO73 8 GPIO77
9 Ground 10 +5V
Note:
All General Purpose I/O ports can only apply to standard TTL ± 5% signal level
(0V/5V), and each Fan.
