TSEC_REG_MACCFG2
tmp = TSEC_READ(sc, TSEC_REG_MACCFG2) & ~TSEC_MACCFG2_IF;
TSEC_WRITE(sc, TSEC_REG_MACCFG2, tmp);
TSEC_WRITE(sc, TSEC_REG_MACCFG2,