ARM, RISC-V контроллеры

Вот, в UM10360.pdf, главе 9.5.1 нашёл: "Note that GPIO pins P0.29 and P0.30 are shared with the USB_D+ and USB_D- pins and must have the same direction. If either FIO0DIR bit 29 or 30 are configured as zero, both P0.29 and P0.30 will be inputs. If both FIO0DIR bits 29 and 30 are ones, both P0.29 and P0.30 will be outputs."