HCB_CD_BIT
par->board->set_ctl(par, HCB_CD_BIT, 1);
par->board->set_ctl(par, HCB_CD_BIT, 0);
ctl = HCB_WUP_BIT | HCB_RW_BIT | HCB_CD_BIT ;
case HCB_CD_BIT:
ctl &= ~(HCB_CD_BIT);
ctl |= HCB_CD_BIT;