MMCHS_HCTL
HCLR4(sc, MMCHS_HCTL, MMCHS_HCTL_DTW);
HCLR4(sc, MMCHS_HCTL, MMCHS_HCTL_SDBP);
reg = HREAD4(sc, MMCHS_HCTL);
HWRITE4(sc, MMCHS_HCTL, reg);
HSET4(sc, MMCHS_HCTL, MMCHS_HCTL_SDBP);
if (!ISSET(HREAD4(sc, MMCHS_HCTL), MMCHS_HCTL_SDBP)) {
HSET4(sc, MMCHS_HCTL, MMCHS_HCTL_HSPE);
HCLR4(sc, MMCHS_HCTL, MMCHS_HCTL_HSPE);
HSET4(sc, MMCHS_HCTL, MMCHS_HCTL_DTW);
HCLR4(sc, MMCHS_HCTL, MMCHS_HCTL_DTW);