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STM32F072 USB_NOE pin

Question asked by EtaPhi on May 30, 2014
Latest reply on Jun 2, 2014 by EtaPhi
I'm planning to use a STM32F072 for a USB device.
When I browsed its datasheet, I found that PA13 can output USB_NOE as alternate funtion.
There is no functional explanation of this pin in the reference manual, so I wonder what this pin does when the USB peripheral is enabled.

Perhaps, it is an input that enables the D+ pull-up when the USB bus is powered, but I may be wrong.

Do you have any ideas?