Small Form-factor Pluggable Transceiver - Signals

Signals

The SFP transceiver contains a PCB that mates with the SFP electrical connector in the host system.

SFP pin-out
Pin Name Function
1 VeeT Transmitter ground
2 TxFault Transmitter fault indication
3 TxDisable Optical output disabled when high
4 MOD-DEF(2) Data for serial ID interface
5 MOD-DEF(1) Clock for serial ID interface
6 MOD-DEF(0) Grounded by the module to indicate module presence
7 RateSelect Low selects reduced bandwidth
8 LOS When high, indicates received optical power below worst-case receiver sensitivity
9 VeeR Receiver ground
10 VeeR Receiver ground
11 VeeR Receiver ground
12 RD- Inverted received data
13 RD+ Received data
14 VeeR Receiver ground
15 VccR Receiver power (3.3 v)
16 VccT Transmitter power (3.3 v)
17 VeeT Transmitter ground
18 TD+ Transmit data
19 TD- Inverted transmit data
20 VeeT Transmitter ground

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