Features 
Up to 1.25Gb/s bi-directional data links 
Hot-pluggable SFP footprint 
TX Disable and RX Los/without Los function 
Fully metallic enclosure for low EMI 
Low power dissipation (1.05 W typical) 
Compact RJ-45 connector assembly 
Access to physical layer IC via 2-wire serial bus 
1000 BASE-T operation in host systems with SERDES interface 
10/100/1000Mbps compliant in host systems with SGMII interface 
Operating case temperature range of  
0°C to +70°C (Commercial) or -20°C to +85°C (Extend) 


Applications 
1.25 Gigabit Ethernet over Cat 5 cable 

Description 
Wiitek`s GE-GB-PxRx-x Copper Small Form Pluggable (SFP)transceivers is high performance, cost effective module compliant with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE 802. 3-2002 and IEEE 802.3ab, which supp- orting 1000Mbps data- rate up to 100 meters reach over unshielded twisted-pair category 5 cable. The module supports1000 Mbps full duplex data-links with 5-level Pulse Amplitude Modulation (PAM) signals. All four pairs in the cable are used with symbol rate at 250Mbps on each pair. The module provides standard serial ID information compliant with SFP MSA, which can be accessed with address of A0h via the 2wire serial CMOS EEPROM protocol. The physical IC can also be accessed via 2wire serial bus at address ACh.