AE_DMAREAD_REG
AE_WRITE_1(sc, AE_DMAREAD_REG, AE_DMAREAD_EN);
if (AE_READ_1(sc, AE_DMAREAD_REG) == AE_DMAREAD_EN)
AE_WRITE_1(sc, AE_DMAREAD_REG, 0);
AE_WRITE_1(sc, AE_DMAREAD_REG, ~AE_DMAREAD_EN);
AE_WRITE_1(sc, AE_DMAREAD_REG, AE_DMAREAD_EN);