D_CTRL_MFD_MASK
(((x) >> D_CTRL_MFD_SHIFT) & D_CTRL_MFD_MASK)
((x) & ~(D_CTRL_MFD_MASK << D_CTRL_MFD_SHIFT))
(D_CTRL_MFD_MASK << D_CTRL_MFD_SHIFT)))