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- Colibri PXA270 up to V1.2
The SYS_EN signal is not available on Colibri PXA270.
- Colibri PXA300
The SYS_EN signal is available on SODIMM pin 1. Since audio codec is not supported on Colibri PXA300, the SYS_EN signal is the only connected to PXA processor via a 10 kohm series resistor.
- Colibri PXA300 XT / Colibri PXA310
The SYS_EN signal is available on SODIMM pin 1. This signal is multiplexed with the MIC_IN signal as represented in the image below. There is a special capacitor circuit to split the two signals.
- Colibri PXA320
The SYS_EN signal is not available on Colibri PXA320.
To get the SYS_EN signal see the following circuit:
The SYS_EN signal is not available on these Colibri modules.