S_MC4_BACK_DOOR_ADDR
#define V_MC4_BACK_DOOR_ADDR(x) ((x) << S_MC4_BACK_DOOR_ADDR)
#define G_MC4_BACK_DOOR_ADDR(x) (((x) >> S_MC4_BACK_DOOR_ADDR) & M_MC4_BACK_DOOR_ADDR)