Mellanox Technologies Switch-IB, User Manual

Page: 101 / 146

102 Mellanox Technologies
Appendix E: QSFP Interface
Table 21 - InfiniBand QSFP Connector Pin-out
Connector
Pin
Number
Connector
Pin Name
Signal Description
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