Qsfp Connector Pin Assignment Usb



RJ-45 Port, QSFP+ Port, QSFP28 Port, SFP+ Port, and SFP Port Connector Pinout Information

Tables in this topic describe the connector pinout information for the RJ-45, QSFP+, QSFP28, SFP+, and SFP ports.

  • Table 1—10/100/1000BASE-T Ethernet network port connector pinout information
  • Table 2—SFP network port connector pinout information
  • Table 3—SFP+ network port connector pinout information
  • Table 4—QSFP+ and QSFP28 network module ports connector pinout information

Table 1: 10/100/1000BASE-T Ethernet Network Port Connector Pinout Information

Pin

Signal

Description

1

TRP1+

Transmit/receive data pair 1

Negative Vport (in PoE models)

2

TRP1-

Transmit/receive data pair 1

Negative Vport (in PoE models)

3

TRP2+

Transmit/receive data pair 2

Positive Vport (in PoE models)

4

TRP3+

Transmit/receive data pair 3

5

TRP3-

Transmit/receive data pair 3

6

TRP2-

Transmit/receive data pair 2

Positive Vport (in PoE models)

7

TRP4+

Transmit/receive data pair 4

8

TRP4-

Transmit/receive data pair 4

Table 2: SFP Network Port Connector Pinout Information

Pin

Signal

Description

1

VeeT

Module transmitter ground

2

TX_Fault

Module transmitter fault

3

TX_Disable

Transmitter disabled

4

SDA

2-wire serial interface data line

5

SCL-

2-wire serial interface clock

6

MOD_ABS

Module absent

7

RS

Rate select

8

RX_LOS

Receiver loss of signal indication

9

VeeR

Module receiver ground

10

VeeR

Module receiver ground

11

VeeR

Module receiver ground

12

RD-

Receiver inverted data output

13

RD+

Receiver noninverted data output

14

VeeR

Module receiver ground

15

VccR

Module receiver 3.3 V supply

16

VccT

Module transmitter 3.3 V supply

17

VeeT

Module transmitter ground

18

TD+

Transmitter noninverted data input

19

TD-

Transmitter inverted data input

20

VeeT

Module transmitter ground

Table 3: SFP+ Network Port Connector Pinout Information

Pin

Signal

Description

1

VeeT

Module transmitter ground

2

TX_Fault

Module transmitter fault

3

TX_Disable

Transmitter disabled

4

SDA

2-wire serial interface data line

5

SCL-

2-wire serial interface clock

6

MOD_ABS

Module absent

7

RS0

Rate select 0, optionally controls SFP+ module receiver

8

RX_LOS

Receiver loss of signal indication

9

RS1

Rate select 1, optionally controls SFP+ transmitter

10

VeeR

Module receiver ground

11

VeeR

Module receiver ground

12

RD-

Receiver inverted data output

13

RD+

Receiver noninverted data output

14

VeeR

Module receiver ground

15

VccR

Module receiver 3.3 V supply

16

VccT

Module transmitter 3.3 V supply

17

VeeT

Module transmitter ground

18

TD+

Transmitter noninverted data input

19

TD-

Transmitter inverted data input

20

VeeT

Module transmitter ground

Table 4: QSFP+ and QSFP28 Network Port Connector Pinout Information

Pin

Signal

1

GND

2

TX2n

3

TX2p

4

GND

5

TX4n

6

TX4p

7

GND

8

ModSelL

9

LPMode_Reset

10

VccRx

11

SCL

12

SDA

13

GND

14

RX3p

15

RX3n

16

GND

17

RX1p

18

RX1n

19

GND

20

GND

21

RX2n

22

RX2p

23

GND

24

RX4n

25

RX4p

26

GND

27

ModPrsL

28

IntL

29

VccTx

30

Vcc1

31

Reserved

32

GND

33

TX3p

34

TX3n

35

GND

36

TX1p

37

TX1n

38

GND

Modified: 2018-02-06

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