Section 2.1.2 of AN4938 states: If a USB interface is used (USB OTG_HS/OTG_FS), the associated GPIOspowered by VDD33USB operate between VDD33USB_MIN and VDD33USB_MAX(seeFigure 2).VDD33USB supplies both USB OTG_HS and USB OTG_FS transceivers. If onlyo...