clrsetbits_be16
clrsetbits_be16(tmr->gtmdr, 0xFFFF, iclk | GTMDR_SPS(sps) |
clrsetbits_be16(&udc->usb_regs->usb_usep[epnum],
clrsetbits_be16(&udc->usb_regs->usb_usep[ep->epnum],