NGBE_PSR_MAC_SWC_AD_L
NGBE_WRITE_REG(hw, NGBE_PSR_MAC_SWC_AD_L, 0);
rar_low = NGBE_READ_REG(hw, NGBE_PSR_MAC_SWC_AD_L);
NGBE_WRITE_REG(hw, NGBE_PSR_MAC_SWC_AD_L, rar_low);