EMAC_RX_CTL_1
{ "RX_CTL_1", EMAC_RX_CTL_1 },
val = RD4(sc, EMAC_RX_CTL_1);
WR4(sc, EMAC_RX_CTL_1, val | RX_DMA_EN | RX_MD);
val = RD4(sc, EMAC_RX_CTL_1);
WR4(sc, EMAC_RX_CTL_1, val & ~RX_DMA_EN);