write_reg(BANK2, MACON3, (1 << MACON3_FULDPX) |
                         (1 << MACON3_FRMLNEN) |
                         (1 << MACON3_TXCRCEN) |
                         (1 << MACON3_PADCFG0) |
                         (1 << MACON3_PADCFG1) |
                         (1 << MACON3_PADCFG2));