According to USB specification, when USB device is attached, before the host sending "SET_CONFIGURATION" command, the device must not consume more than 100mA.
When looking at the scope capture posted here at Jun. 29, it shows current peak of over 300mA.
So, is it possible that the USB controller turn off DRVVBUS, because of the peak current of USB1_VBUS?
Best regards,
Hayden
