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To enable GPIO functionality, modules with HW revision CE 1.x.x must be reworked. Contact
your local sales or support for further information. On modules with HW revision CE 4.x.x
and BIOS R115 or newer GPIO/SDIO can be switched via BIOS setup option
The General Purpose Inputs and Outputs are not applicable to drive applications faster than
2ms. It's recommended to use data transfer rates only up to 1 kHz.
General Purpose Outputs are high impedance until first write access
There is one IO Port controlled via onboard CPLD (1 Byte, Port 0) available and the 4 Inputs and 4 Outputs are fixed in
direction. To access the GPIOs use the JIDA32 interface. You can write to a General Purpose Output with the upper half
byte. To read a General purpose Input use the lower half byte.
Bit of GPIO Port0
Function
0
GPI0
1
GPI1
2
GPI2
3
GPI3
4
GPO0
5
GPO1
6
GPO2
7
GPO3
41
COM Express Pin
A54
A63
A67
A85
A93
B54
B57
B63
nanoETXexpress-SP/Special Features
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