XUSB_ADDRESS_OFFSET
udc->write_fn(udc->addr, XUSB_ADDRESS_OFFSET, 0);
udc->write_fn(udc->addr, XUSB_ADDRESS_OFFSET, 0);
udc->write_fn(udc->addr, XUSB_ADDRESS_OFFSET, 0);
udc->write_fn(udc->addr, XUSB_ADDRESS_OFFSET,
udc->write_fn(udc->addr, XUSB_ADDRESS_OFFSET, 0);