10G RJ45 Copper SFP+ transceivers are based on the SFP Multi-Source Agreement (MSA). Copper RJ-45 Transceiver is compatible with the 10Gbase-T / 5Gbase-T / 2.5Gbase-T / 1000base-T standards as specified in IEEE Std 802.3. 10GBase Copper SFP+ uses the SFP's RX_LOS pin for link indication. If you pull up SFP's TX_DISABLE pin, PHY IC should be reset.