1000BASE-X and 10/100/1000BASE-T and 100Base-FX Copper SFP Transceiver

Features

Up to 1.25Gb/s bi-directional data links

Hot-pluggable SFP footprint

RX Los/without Los function

Fully metallic enclosure for low EMI

Low power dissipation (0.5 W typical)

Compact RJ-45 connector assembly

Access to physical layer IC via 2-wire serial bus

1000BASE-X operation in host systems with SERDES interface

10/100/1000Mbps compliant in host systems with SGMII interface

100Base-FX operation in host systems with SERDES interface

Operating case temperature range of 0°C to +70°C or -40°C to +85°C

Applications

1.25 Gigabit Ethernet over Cat 5 cable

Description

SFP-GE-T Copper Small Form Pluggable (SFP)transceivers are a 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 supports 1000Mbps data- rate up to 100 meters reach over unshielded twisted-pair category 5 cable. The module supports 1000 Mbps full duplex data links with 5-level Pulse Amplitude Modulation (PAM) signals. All four pairs in the cable are used with a symbol rate of 250Mbps on each pair. The module provides standard serial ID information compliant with SFP MSA, which can be accessed with an address of A0h via the 2wire serial CMOS EEPROM protocol.

Pin Descriptions

Notes:

Plug Seq.: Pin engagement sequence during hot plugging.

1) TX Fault is not supported and is always connected to ground.

2) TX disable, an input used to reset the transceiver module, This pin is pulled up within the module with a 4.7 KΩ resistor.

Low (0 – 0.8 V): Transceiver on

Between (0.8 V and 2.0 V): Undefined

High (2.0 – 3.465 V): Transceiver in reset state

Open: Transceiver in reset state

3) Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K~10K resistor on the host board. The pull-up voltage shall be VccT or VccR

Mod-Def 0 is grounded by the module to indicate that the module is present

Mod-Def 1 is the clock line of two wire serial interface for serial ID

Mod-Def 2 is the data line of two wire serial interface for serial ID

4) RX_LOS (Loss of Signal): LVTTL compatible with a maximum voltage of Host_Vcc. RX_LOS can enabled or disabled (Refer to Ordering information),RX_LOS is not used and is always tied to ground via 100-ohm resistor.

5) RD-/+: These are the differential receiver outputs. They are AC coupled 100 differential lines which should be terminated with 100 (differential) at the user SERDES.

6) TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100 differential termination inside the module.

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