Hi Sirs,
Sorry to bother you.
There is a problem feedback from our customer as below description, they use COMe module (skylake) and XIO2001 implement in their carrier board.
When the system execute hibernate shutdown from WIN10, the system will auto wakeup.
If we disabled PME SCI support on this PCIe port then the problem did not happen anymore (there are no any PCI device is plugged during test).
Suspecting the XIO2001 to set some of PME registers during shutdown process result in the system auto wakeup, do you have any suggestions for this problem or have you ever receive similar case from other accounts?
Also we found the problem happen on a particular condition…
The system shutdown from OS, then disconnect power:
àIf the VAUX does not fully discharge that still keep around 0.45V then power on again, the problem will happen on next shutdown.
àIf the VAUX has fully discharge to 0V, then the problem does not happen.
Could you help to check this problem?
Thanks!!