Nvidia BlueField-2 User Manual page 89

Pin Signal I/O Description
# Name
7 RX_D0 Output Receive data
8 GND GND Ground
9 RX_D1 Output Receive data
10 GND GND Ground
11 CRS_DV Output Carrier sense/
Receive Data
Valid
12 GND GND Ground
Output for SoC
Receive data. Data signals from the network controller to the BMC.
For baseboards, this pin shall be connected between the baseboard NC-SI over RBT PHY and the connector. This signal requires a 100 kΩ
pull down resistor to GND on the baseboard between the BMC and the RBT isolator to prevent the signal from floating when no card is
installed.
For DPUs, this pin shall be connected between the connector and the RBT PHY. External termination determined by the DPU RBT PHY
requirements.
Output for SoC
Receive data. Data signals from the network controller to the BMC.
For baseboards, this pin shall be connected between the baseboard NC-SI over RBT PHY and the connector. This signal requires a 100 kΩ
pull down resistor to GND on the baseboard between the BMC and the RBT isolator to prevent the signal from floating when no card is
installed.
For DPUs, this pin shall be connected between the connector and the RBT PHY. External termination determined by the DPU RBT PHY
requirements.
Carrier sense/receive data valid. This signal is used to indicate to the baseboard that the carrier sense/receive data is valid.
For baseboards, this pin shall be connected between the baseboard NC-SI over RBT PHY and the connector. This signal requires a 100 kΩ
pull down resistor on the baseboard between the BMC and the RBT isolator to prevent the signal from floating when no DPU is installed.
For DPUs, this pin shall be connected between the connector and the RBT PHY. External termination determined by the SmartNIC RBT PHY
requirements.
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