SASSP_DR
bus_space_read_4(sc->sc_iot, sc->sc_ssph, SASSP_DR);
bus_space_write_4(sc->sc_iot, sc->sc_ssph, SASSP_DR, in << 8);
*out = bus_space_read_4(sc->sc_iot, sc->sc_ssph, SASSP_DR);