MAC_CTRL_DUPLX
mac_ctrl &= ~(MAC_CTRL_DUPLX | MAC_CTRL_RX_EN | MAC_CTRL_TX_EN);
mac_ctrl |= MAC_CTRL_DUPLX;
mac |= MAC_CTRL_DUPLX;
mac &= ~MAC_CTRL_DUPLX;
value |= MAC_CTRL_DUPLX;
value |= MAC_CTRL_DUPLX;
ctrl |= MAC_CTRL_DUPLX;
value |= MAC_CTRL_DUPLX;
ctrl |= MAC_CTRL_DUPLX;