Pin Descriptions

The device is OSFP based (Octal Small Form Factor Pluggable, www.osfpmsa.org).

The pin assignment for the interface is shown below.

Pin

Symbol

Description

Pin

Symbol

Description

1

GND

Ground

31

GND

Ground

2

Tx2p

Transmitter Non-Inverted Data Input

32

Rx2p

Receiver Non-Inverted Data Output

3

Tx2n

Transmitter Inverted Data Input

33

Rx2n

Receiver Inverted Data Output

4

GND

Ground

34

GND

Grounds

5

Tx4p

Transmitter Non-Inverted Data Input

35

Rx4p

Receiver Non-Inverted Data Output

6

Tx4n

Transmitter Inverted Data Input

36

Rx4n

Receiver Inverted Data Output

7

GND

Ground

37

GND

Ground

8

Tx6p

Transmitter Non-Inverted Data Input

38

Rx6p

Receiver Non-Inverted Data Output

9

Tx6n

Transmitter Inverted Data Input

39

Rx6n

Receiver Inverted Data Output

10

GND

Ground

40

GND

Ground

11

Tx8p

Transmitter Non-Inverted Data Input

41

Rx8p

Receiver Non-Inverted Data Output

12

Tx8n

Transmitter Inverted Data Input

42

Rx8n

Receiver Inverted Data Output

13

GND

Ground

43

GND

Ground

14

SCL

2-wire serial interface clock

44

INT / RSTn

Module Interrupt / Module Reset

15

VCC

+3.3V Power

45

VCC

+3.3V Power

16

VCC

+3.3V Power

46

VCC

+3.3V Power

17

LPWn / PRSn

Low-Power Mode / Module Present

47

SDA

2-wire Serial interface data

18

GND

Ground

48

GND

Ground

19

Rx7n

Receiver Inverted Data Output

49

Tx7n

Transmitter Inverted Data Input

20

Rx7p

Receiver Non-Inverted Data Output

50

Tx7p

Transmitter Non-Inverted Data Input

21

GND

Ground

51

GND

Ground

22

Rx5n

Receiver Inverted Data Output

52

Tx5n

Transmitter Inverted Data Input

23

Rx5p

Receiver Non-Inverted Data Output

53

Tx5p

Transmitter Non-Inverted Data Input

24

GND

Ground

54

GND

Ground

25

Rx3n

Receiver Inverted Data Output

55

Tx3n

Transmitter Inverted Data Input

26

Rx3p

Receiver Non-Inverted Data Output

56

Tx3p

Transmitter Non-Inverted Data Input

27

GND

Ground

57

GND

Ground

28

Rx1n

Receiver Inverted Data Output

58

Tx1n

Transmitter Inverted Data Input

29

Rx1p

Receiver Non-Inverted Data Output

59

Tx1p

Transmitter Non-Inverted Data Input

30

GND

Ground

60

GND

Ground

OSFP Module Pad Layout

image2022-1-12_13-27-13.png


Pin

Symbol

Description

Pin

Symbol

Description

1

Ground

Ground

20

Ground

Ground

2

Tx2n

Connected to Port 1 lane Rx2 Inverted Data

21

Rx2n

Connected to Port 1 lane Tx2 Inverted Data

3

Tx2p

Connected to Port 1 lane Rx2 Non-Inverted Data

22

Rx2p

Connected to Port 1 lane Tx2 Non-Inverted Data

4

Ground

Ground

23

Ground

Grounds

5

Tx4n

Connected to Port 2 lane Rx2 Non-Inverted Data

24

Rx4n

Connected to Port 2 lane Tx2 Inverted Data

6

Tx4p

Connected to Port 2 lane Rx2 Inverted Data

25

Rx4p

Connected to Port 2 lane Tx2 Non-Inverted Data

7

Ground

Ground

26

Ground

Ground

8

Mod-SelL

Cable Select

27

ModPrsL

Cable Present

9

ResetL

Cable Reset

28

IntL

Interrupt

10

Vcc Rx

+3.3V Power supply receiver

29

Vcc Tx

+3.3V Power supply transmitter

11

SCL

2-wire serial interface clock

30

Vcc1

+3.3V Power Supply

12

SDA

2-wire serial interface data

31

LPMode

Low Power Mode

13

Ground

Ground

32

Ground

Ground

14

Rx3p

Connected to Port 2 lane Tx1 Non-Inverted Data

33

Tx3p

Connected to Port 2 lane Rx1 Non-Inverted Data

15

Rx3n

Connected to Port 2 lane Tx1 Inverted Data

34

Tx3n

Connected to Port 2 lane Rx1 Inverted Data

16

Ground

Ground

35

Ground

Ground

17

Rx1p

Connected to Port 1 lane Tx1 Non-Inverted Data

36

Tx1p

Connected to Port 1 lane Rx1 Non-Inverted Data

18

Rx1n

Connected to Port 1 lane Tx1 Inverted Data

37

Tx1n

Connected to Port 1 lane Rx1 Inverted Data

19

Ground

Ground

38

Ground

Ground

QSFP112 Module Pad Layout

image2023-4-30_9-13-36.png


The product complies with the CMIS 4.0 and the SFF 8636 specifications for the management interfaces. These interfaces all provide Digital Diagnostic Monitoring (DDM) functions including warning and alarms:

  • Rx receive optical power monitor

  • Tx transmit optical power monitor

  • Tx bias current monitor

  • Module supply voltage monitor

  • Module case temperature monitor

  • The AOC provides the following features and interrupt indications

  • Tx & Rx LOS

  • Tx & Rx LoL

  • Tx fault

  • Tx & Rx disable

© Copyright 2023, NVIDIA. Last updated on Oct 9, 2023.