SFP-TX

--  LAN 1000Base-T 
--  1.25 Gigabit Ethernet over Cat 5 cable 
-- Switch to Switch interface 
--  Router/Server interface
SFP-TX  1000BASE-T Copper Small Form Pluggable (SFP) are based on the
SFP Multi Source Agreement (MSA).    It is compatible with the Gigabit Ethernet and
1000BASE-T standards as specified in IEEE Std 802.3

-- Support 1000BASE-T operation in
-- host systems with SGMII interface 
--  Up to 1.25Gbps bi-direction data  links 
--   Hot-pluggable SFP footprint 
--   Fully metallic enclosure for low EMI 
--   Low power dissipation (1.05 W  typical) 
--   Compact RJ-45 connector  assembly 
--  100m transmission over unshielded  twisted pair(UTP) Category 5 Cable 
--  Access to physical layer IC via  2-wire serial bus