Nvidia BlueField-3 User Manual

30
Pin Number Description
5 GND
6 Sense0
7 GND
8 GND
4.3 NC-SI Management Interface
The following tablelist the NC-SI management interface pinout descriptions. For further details,
please refer to NC-SI Management Interface.
Pin
#
Signal
Name
I/O Signal Description
1 GND GND Ground
2 PKG_ID1 Input (to
BlueField-
3)
NC-SI PKG_ID
Shoul be connected to the Primary controller NC-SI PKG_ID pins to set the
appropriate package ID.
PKG_ID0 should be connected to the endpoint device GPIO associated with
Package ID[0]. PKG_ID1 should be associated with Package ID[1].
Baseboard should connect to GND or leave floating.
DPU should have a 4.7k PU.
3 RBT_RXD0 Output
(from
BlueField-
3)
Receive data. Data signals from the network controller to the BMC.
For baseboards, this pin should 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 should be connected between the connector and the RBT
PHY. External termination determined by the DPU RBT PHY requirements.
4 RBT_REF_C
LK
Input RBT Reference clock. Synchronous clock reference for receive, transmit and
control interface. The clock should have a typical frequency of 50MHz ±50
ppm.
For baseboards, this pin should be connected between the baseboard NC-SI
over RBT PHY and the DPU cable connector. The RBT_REF_CLK should not
be driven until 3.3V AUX is present on the DPU. The RBT_REF_CLK should be
continuous once it has started.
For DPUs, this pin should be connected between the connector and the RBT
PHY. No external termination is required.
5 RBT_RXD1 Output Receive data. Data signals from the network controller to the BMC.
For baseboards, this pin should 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 should be connected between the connector and the RBT
PHY. External termination determined by the DPU RBT PHY requirements.
6 GND GND Ground

Nvidia BlueField-3 Specifications

General

Product Type	DPU (Data Processing Unit)
Power Consumption	Up to 75W
Manufacturing Process	7nm
Operating Temperature	0°C to 70°C
Virtualization	SR-IOV, Virtio
Target Applications	Cloud, Networking, Storage
Memory	Up to 16 GB DDR4
Memory Bandwidth	Up to 200 GB/s
Networking	Up to 400 GbE
PCIe	PCIe Gen4 x16
Storage Acceleration	NVMe over Fabrics (NVMe-oF)
Security	Hardware root of trust, Secure boot
Form Factor	PCIe Card
Acceleration Engines	Networking, Storage, Security
Software Support	NVIDIA DOCA
Cache	L1, L2, L3 caches