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Pin# Signal Name
Wire
Type
53
PCIE_CX_CPU_14N
Micro
coax
54
GND
GND
BAR
55
PCIE_CX_CPU_15P
Micro
coax
56
PCIE_CX_CPU_15N
Micro
coax
57
GND
GND
BAR
58
S_PERST1_CONN_L
Micro
coax
59
No
Wire
60
S_PRSNT2_L
Micro
coax
NVIDIA BlueField-3 DPU User Guide
AWG# Detailed Description
38
Connect from the White Cabline CA-II Plus harness to the PCIe x16 Rx lanes of the CPU/GPU/End-Point.
220nF caps are required on this signal on the BlueField DPU.
38
Connect from the White Cabline CA-II Plus harness to the PCIe x16 Rx lanes of the CPU/GPU/End-Point.
220nF caps are required on this signal on the BlueField DPU.
38
Connect from the White Cabline CA-II Plus harness to the PCIe x16 Rx lanes of the CPU/GPU/End-Point.
220nF caps are required on this signal on the BlueField DPU.
38
PCIe compliant PERST_L (active low PCI Reset) signal for the PCIe Cabline CA-II Plus Connectors. The
direction of this PERST_L signal depends on the implementation: When connecting a CPU root complex to
the PCIe Cabline CA-II Plus interface, this signal is driven from the motherboard side (from the CPU), to the
BlueField DPU. When connecting a GPU or an end point to the PCIe Cabline CA-II Plus interface, this signal is
driven from the BlueField DPU side (which operates as a PCIe switch in this case), to the GPU or end-point
on the motherboard side.
38
Connect to a 4.7K pull-up resistor to 3.3V on the motherboard side, to detect if both the Cabline harnesses
are connected or not. This signal is connected to S_PRSNT1_L on the BlueField DPU. In the motherboard
side, read logic low if both Cabline harnesses are connected. Read logic 1 (3.3V) if one or both the Cabline
harnesses are not connected.
No wires are connected to these pins to ensure they do not interfere with the operation of S_PRSNT1_L for
the detection when the two Cabline harnesses are installed.
| 97
Pin# on the
other end
53
54
55
56
57
58
59
60
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