I'm design device of i.MX7D as a USB host only (USB_OTG2), which connect to an MCU as a USB device in same PCB board. The USB signal runs without 5V of USB.
USB_OTG2 has delicated pin:
- USB_OTG2_DP/DN: Connect to MCU USB PD/DN
- USB_OTG2_ID: Tie to GND by 10k resistor for working as USB HOST
- USB_OTG2_REXT: Tie to GND by 200R resistor.
- USB_OTG2_VBUS: I don't now how to do with this pin in this case
Please guide me a solution for this case (I don't want to add an 5V power to pin USB_OTG_VBUS)
Thanks and best regards,