MAC_CONFIG_REG_TF
((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) |
((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) << 16));
value = ((MAC_CONFIG_REG_TF | MAC_CONFIG_REG_RF) << 16);
pause->tx_pause = (reg & MAC_CONFIG_REG_TF) >> 1;