AE_MAC_RX_EN
val = AE_MAC_RX_EN | AE_MAC_CLK_PHY | \
val |= AE_MAC_TX_EN | AE_MAC_RX_EN;
if ((val & AE_MAC_RX_EN) != 0) {
val &= ~AE_MAC_RX_EN;
AE_WRITE_4(sc, AE_MAC_REG, val | AE_MAC_TX_EN | AE_MAC_RX_EN);