STACR_OC
while ((_emac3_reg_read_4(EMAC3_STACR) & STACR_OC) == 0 &&
oc = EMAC_READ(sc, EMAC_STACR) & STACR_OC;
while ((oc == STACR_OC) != sc->sc_stacr_completed) {
oc = EMAC_READ(sc, EMAC_STACR) & STACR_OC;
sc->sc_stacr_bits = STACR_OC;