Table 1. QSFP+ Connector Signals (Continued)
Pin
Symbol
Name/Description
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
22
Rx2p
Receiver Non-Inverted Data Output
23
GND
Ground
24
Rx4n
Receiver Inverted Data Output
25
Rx4p
Receiver Non-Inverted Data Output
26
GND
Ground
27
ModPrsL
Module Present
28
IntL
Interrupt
29
Vcc Tx
+3.3V Power Supply Transmitter
30
Vcc1
+3.3V 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
PXIe-8240 User Manual
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© National Instruments
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