PCS_CLOCK_OFF
bus_space_write_2(iot, ioh, offset, d | PCS_CLOCK_OFF);
bus_space_write_2(iot, ioh, offset, d | PCS_CLOCK_OFF);
bus_space_write_2(iot, ioh, off, PCS_CLOCK_OFF | wren | data);
bus_space_write_2(iot, ioh, off, PCS_CLOCK_OFF | wren | data);
d |= PCS_WREN_ON | PCS_DATA_OFF | PCS_CLOCK_OFF;
d |= PCS_WREN_OFF | PCS_DATA_OFF | PCS_CLOCK_OFF;