Nvidia BlueField-3 User Manual

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11.2 Channel Insertion Loss
Channel insertion lossis the loss ofsignalpowerresulting from the insertion of a device in
atransmission lineoroptical fiberand is usually expressed indecibels(dB).
The following table describes the BlueField-3 DPU channel insertion loss budget for PCIe Gen 5.0
architecture (32 GT/s).
The total PCIe channel insertion loss approved byPCI-SIG Gen5.0 specis36dB @16GHz.
The totalBlueField-3 DPU boardinsertion loss of thePCIe lanes(PCORE1) routed to theCabline CA-
II Plusis 6dB(@16GHz).
ThePassivePCIe Auxiliary Card Lossis1.5dB(@16Ghz).
TheCabline CA-II Plus harnessloss at 16GHz:
Harness Length Channel Loss at Gen 5.0
15cm 3.8dB
35cm 7.6dB
55cm 11.4dB
The above is measured data; it is recommended to add0.5dB marginsfor your system (some loss
variations are possible).
TheCabline CA-II Plus harnessesloss =0.24dB/cmfor Gen 5.0.
The above loss includes theCabline CA-II Plus harnessesandconnectorson both sides.
The PCI-SIG Gen5 SPEC also defines the total loss for AIC (bump to Golden-Fingers) to be 9.5dB
@16Ghz.
The BlueField-3 AIC, together with a 15cmCabline CA-II Plus harnesses andthe Passive PCIe
Auxiliary Card loss is: 3dB+2dB+3.8dB+1.5dB=10.3dB > 9.5dB
11.3 Cabline CA-II Plus Harness Pinouts
11.3.1 Cabline CA-II Plus Harness - Component Side
Pin# Signal Name Wire Type Detailed
Description
AWG# Pin# on the
other end
1 GND GND BAR 1

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