CAS_RX_CONFIG
bus_space_write_4(t, h, CAS_RX_CONFIG,
bus_space_read_4(sc->sc_memt, sc->sc_memh, CAS_RX_CONFIG),
bus_space_write_4(t, h, CAS_RX_CONFIG, 0);
if (!cas_bitwait(sc, h, CAS_RX_CONFIG, 1, 0))