Mellanox Technologies SN2100 Hardware User Manual page 73

Appendix C: Interface Specifications
C.1 QSFP28 Interface
J3 and J6
20
GND
21
Rx2n
22
Rx2p
23
GND
24
Rx4n
25
Rx4p
26
GND
27
ModPrsL
28
IntL
29
VccTx
30
Vcc1
31
LPMode
32
GND
33
Tx3p
34
Tx3n
35
GND
36
Tx1p
37
Tx1n
38
GND
Connector
Pin Number
19
GND
18
Rx1n
17
Rx1p
16
GND
15
Rx3n
14
Rx3p
13
GND
12
SDA
11
SCL
10
Vcc Rx
9
ResetL
8
ModSelL
7
GND
6
Tx4p
5
Tx4n
4
GND
3
Tx2p
2
Tx2n
1
GND
Connector
Pin Name
1 GND Ground
2 Tx2n Transmitter Inverted Data Input
3 Tx2p Transmitter Non-Inverted Data Input
4 GND Ground
5 Tx4n Transmitter Inverted Data Input
6 Tx4p Transmitter Non-Inverted Data Input
7 GND Ground
8 ModSelL Module Select
9 ResetL Module Reset
10 Vcc Rx +3.3 V Power supply receiver
11 SCL 2-wire serial interface clock
12 SDA 2-wire serial interface data
13 GND Ground
14 Rx3p Receiver Non-Inverted Data Output
15 Rx3n Receiver Inverted Data Output
16 GND Ground
17 Rx1p Receiver Non-Inverted Data Output
18 Rx1n Receiver Inverted Data Output
19 GND Ground
20 GND Ground
21 Rx2n Receiver Inverted Data Output 3
22 Rx2p Receiver Non-Inverted Data Output 3
23 GND Ground
24 Rx4n Receiver Inverted Data Output 3
25 Rx4p Receiver Non-Inverted Data Output 3
26 GND Ground
27 ModPrsL Module Present
28 IntL Interrupt
29 Vcc Tx +3.3 V Power supply transmitter
30 Vcc 1 +3.3 V Power Supply
31 LPMode Low Power Mode
32 GND Ground
33 Tx3p Transmitter Non-Inverted Data Input
34 Tx3n Transmitter Inverted Data Input
35 GND Ground
36 Tx1p Transmitter Non-Inverted Data Input
37 Tx1n Transmitter Inverted Data Input
Signal Description
Mellanox Technologies
Rev 1.6
73