Hello Dan, VBUS would not be connected to this device. It would have to be a self-powered USB device. The TM4C1233H6PZ can only be used as a USB Device. As long as you properly configure it as a USB Device in TivaWare, all configurations will be handled. You cannot configure it as a USB Host or USB OTG - if you try to do this, the driver would not work properly as it would try and operate in a mode the device can't support so you'd get errors etc.
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