38.6.3.3 Device Detection

A device is detected by the USBHS Host mode when D+ or D- is no longer tied low, i.e., when the device D+ or D- pull-up resistor is connected. The bit USBHS_SFR.VBUSRQS must be set to ‘1’ to enable this detection.

Note: The VBUS supply is not managed by the USBHS interface. It must be generated on-board.

The device disconnection is detected by the host controller when both D+ and D- are pulled down.

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