ATW_CMDR_DRT_MASK
cmdr &= ~ATW_CMDR_DRT_MASK;
#define ATW_CMDR_DRT_8DW __SHIFTIN(0x0, ATW_CMDR_DRT_MASK)
#define ATW_CMDR_DRT_16DW __SHIFTIN(0x1, ATW_CMDR_DRT_MASK)
#define ATW_CMDR_DRT_SF __SHIFTIN(0x2, ATW_CMDR_DRT_MASK)
#define ATW_CMDR_DRT_RSVD __SHIFTIN(0x3, ATW_CMDR_DRT_MASK)