Pin Description
QSFP28 Pin Function Definition
Pin |
Symbol |
Description |
Pin |
Symbol |
Description |
1 |
GND |
Ground |
20 |
GND |
Ground |
2 |
Tx2n |
Transmitter Inverted Data Input |
21 |
Rx2n |
Receiver Inverted Data Output |
3 |
Tx2p |
Transmitter Non-Inverted Data Input |
22 |
Rx2p |
Receiver Non-Inverted Data Output |
4 |
GND |
Ground |
23 |
GND |
Grounds |
5 |
Tx4n |
Transmitter Inverted Data Input |
24 |
Rx4n |
Receiver Inverted Data Output |
6 |
Tx4p |
Transmitter Non-Inverted Data Input |
25 |
Rx4p |
Receiver Non-Inverted Data Output |
7 |
GND |
Ground |
26 |
GND |
Ground |
8 |
ModSelL |
Module Select |
27 |
ModPrsL |
Module Present |
9 |
ResetL |
Module 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 |
GND |
GND |
32 |
GND |
Ground |
14 |
Rx3p |
Receiver Non-Inverted Data Output |
33 |
Tx3p |
Transmitter Non-Inverted Data Input |
15 |
Rx3n |
Receiver Inverted Data Output |
34 |
Tx3n |
Transmitter Inverted Data Input |
16 |
GND |
Ground |
35 |
GND |
Ground |
17 |
Rx1p |
Receiver Non-Inverted Data Output |
36 |
Tx1p |
Transmitter Non-Inverted Data Input |
18 |
Rx1n |
Receiver Inverted Data Output |
37 |
Tx1n |
Transmitter Inverted Data Input |
19 |
GND |
Ground |
38 |
GND |
Ground |