TL_AC_MTXD3
if (tl_dio_read8(sc, TL_ACOMMIT) & TL_AC_MTXD3)
tl_dio_clrbit(sc, TL_ACOMMIT, TL_AC_MTXD3);
tl_dio_setbit(sc, TL_ACOMMIT, TL_AC_MTXD3);