![image2018-11-14_14-24-7-version-1-modificationdate-1542658570887-api-v2.png](https://docscontent.nvidia.com/dims4/default/d7ae22e/2147483647/strip/true/crop/239x317+0+0/resize/239x317!/quality/90/?url=https%3A%2F%2Fk3-prod-nvidia-docs.s3.us-west-2.amazonaws.com%2Fbrightspot%2Fconfluence%2F0000018e-7a83-d04c-a7fe-7fdb4f070000%2Fimages%2Fdownload%2Fattachments%2F2449235406%2Fimage2018-11-14_14-24-7-version-1-modificationdate-1542658570887-api-v2.png)
QSFP Pin Description
Connector Pin Number | Symbol | Signal Description |
1 | GND | Ground |
2 | Tx2n | Connected to Port 2 lane Rx Inverted Data |
3 | Tx2p | Connected to Port 2 lane Rx Non-Inverted Data |
4 | GND | Ground |
5 | Tx4n | Connected to Port 4 lane Rx Inverted Data |
6 | Tx4p | Connected to Port 4 lane Rx Non-Inverted Data |
7 | GND | Ground |
8 | Mod-SelL | Cable/Module Select |
9 | ResetL | Cable/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 | Connected to Port 3 lane Tx Non-Inverted Data |
15 | Rx3n | Connected to Port 3 lane Tx Inverted Data |
16 | GND | Ground |
17 | Rx1p | Connected to Port 1 lane Tx Non-Inverted Data |
18 | Rx1n | Connected to Port 1 lane Tx Inverted Data |
19 | GND | Ground |
20 | GND | Ground |
21 | Rx2n | Connected to Port 2 lane Tx Inverted Data |
22 | Rx2p | Connected to Port 2 lane Tx Non-Inverted Data |
23 | GND | Ground |
24 | Rx4n | Connected to Port 4 lane Tx Inverted Data |
25 | Rx4p | Connected to Port 4 lane Tx Non-Inverted Data |
26 | GND | Ground |
27 | ModPrsL | Module/cable 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 | Connected to Port 3 lane Rx Non-Inverted Data |
34 | Tx3n | Connected to Port 3 lane Rx Inverted Data |
35 | GND | Ground |
36 | Tx1p | Connected to Port 1 lane Rx Non-Inverted Data |
37 | Tx1n | Connected to Port 1 lane Rx Inverted Data |
38 | GND | Ground |
![image2018-11-14_14-37-8-version-1-modificationdate-1542658570997-api-v2.png](https://docscontent.nvidia.com/dims4/default/1ff736a/2147483647/strip/true/crop/671x265+0+0/resize/671x265!/quality/90/?url=https%3A%2F%2Fk3-prod-nvidia-docs.s3.us-west-2.amazonaws.com%2Fbrightspot%2Fconfluence%2F0000018e-7a83-d04c-a7fe-7fdb4f070000%2Fimages%2Fdownload%2Fattachments%2F2449235406%2Fimage2018-11-14_14-37-8-version-1-modificationdate-1542658570997-api-v2.png)
Rear View of Module with Pin Placement
![image2018-11-14_14-37-29-version-1-modificationdate-1542658570947-api-v2.png](https://docscontent.nvidia.com/dims4/default/982b778/2147483647/strip/true/crop/433x327+0+0/resize/433x327!/quality/90/?url=https%3A%2F%2Fk3-prod-nvidia-docs.s3.us-west-2.amazonaws.com%2Fbrightspot%2Fconfluence%2F0000018e-7a83-d04c-a7fe-7fdb4f070000%2Fimages%2Fdownload%2Fattachments%2F2449235406%2Fimage2018-11-14_14-37-29-version-1-modificationdate-1542658570947-api-v2.png)
SFP Pin Description
Pin | Symbol Name | Description | Note |
1 | VeeT | Module Transmitter Ground | -- |
2 | TX_Fault | Module Transmitter Fault | a |
3 | TX_Disable | Transmitter Disable. Turns off transmitter laser output | b |
4 | SDA | 2-wire Serial Interface Data Line | c |
5 | SCL | 2-wire Serial Interface Clock Line | d |
6 | MOD_ABS | Module Absent. Grounded within the module | d |
7 | RS0 | No connection required | -- |
8 | Rx_LOS | Loss of Signal indication. Logic 0 indicates normal operation. | d |
9 | RS1 | No connection required | -- |
10 | VeeR | Receiver Ground (Common with Transmitter Ground) | a |
11 | VeeR | Receiver Ground (Common with Transmitter Ground) | a |
12 | RD- | Receiver Inverted DATA out. AC Coupled | -- |
13 | RD+ | Receiver Non-inverted DATA out. AC Coupled | -- |
14 | VeeR | Receiver Ground (Common with Transmitter Ground) | a |
15 | VccR | Receiver Power Supply | -- |
16 | VccT | Transmitter Power Supply | -- |
17 | VeeT | Transmitter Ground (Common with Receiver Ground) | a |
18 | TD+ | Transmitter Non-Inverted DATA in. AC Coupled | -- |
19 | TD- | Transmitter Inverted DATA in. AC Coupled | -- |
20 | VeeT | Transmitter Ground (Common with Receiver Ground) | a |
Notes:
TFAULT is an open collector/drain output, which should be pulled up with a 4.7k-10k Ohms resistor on the host board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V. A high output indicates a transmitter fault caused by either the TX bias current or the TX output power exceeding the preset alarm thresholds. A low output indicates normal operation. In the low state, the output is pulled to <0.8V.
Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V
Should be pulled up with 4.7kΩ-10kΩ on host board to a voltage between 2.0V and 3.6V. MOD_ABS pulls line low to indicate module is plugged in.
LOS is open collector output. Should be pulled up with 4.7kΩ-10kΩ on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
RJ-45 Console and I²C interfaces are integrated in the same connector. Due to that, connecting any cable other than the Mellanox supplied console cable may cause an I²C hang.
Using uncertified cables may damage the I²C interface. Refer to the Replacement Parts Ordering Numbers appendix for harness details.
Signal | Pin# | Color |
Not connected | 1 | G/W |
I²C_SCL | 2 | G |
TXD | 3 | O/W |
Not connected | 4 | Bl |
GND | 5 | Bl/W |
RXD | 6 | O |
I²C_SDA | 7 | Br/W |
Not connected | 8 | Br |
The RS232 harness cable (DB9 to RJ45) is provided within the package to connect a host PC to the system’s Console RJ45 port.
RJ45 to DB9 Harness Pinout
![image2022-7-18_15-38-55-version-1-modificationdate-1658185835090-api-v2.png](https://docscontent.nvidia.com/dims4/default/3c10d91/2147483647/strip/true/crop/989x630+0+0/resize/989x630!/quality/90/?url=https%3A%2F%2Fk3-prod-nvidia-docs.s3.us-west-2.amazonaws.com%2Fbrightspot%2Fconfluence%2F0000018e-7a83-d04c-a7fe-7fdb4f070000%2Fimages%2Fdownload%2Fattachments%2F2449235406%2Fimage2022-7-18_15-38-55-version-1-modificationdate-1658185835090-api-v2.png)
2m RJ45-to-RJ45 serial port cable is provided in the SN2410 and SN2700 packages.
The harness must be used when connecting the switch serial port with the terminal server/console server.
The new harness can be extended by an ordinary flat 1-to-1 RJ45 cable.
![RJ45toRJ45-version-1-modificationdate-1568036626200-api-v2.png](https://docscontent.nvidia.com/dims4/default/173923f/2147483647/strip/true/crop/28x30+0+0/resize/28x30!/quality/90/?url=https%3A%2F%2Fk3-prod-nvidia-docs.s3.us-west-2.amazonaws.com%2Fbrightspot%2Fconfluence%2F0000018e-7a83-d04c-a7fe-7fdb4f070000%2Fimages%2Fdocs.nvidia.com%2Fnetworking%2Fdownload%2Fattachments%2F6884788%2FRJ45toRJ45-version-1-modificationdate-1568036626200-api-v2.png)