Jetson Nano PCIE configration

Robotics & Edge Computing Jetson & Embedded Systems Jetson Nano
1

Hi,
Since Jetson Nano supports up to a 1x4 lane PCIE configration at the module pins,lane0 rotued to M.2 Key E connector,if it sopports another 1x2 lane(lane1&Lane2?) rotue to nvME PCIE SSD at the same time?

2

Hi spenseryao, Jetson Nano’s PCIe controller supports one PCIe endpoint, so you would need to use a PCIe switch onboard the carrier if you wanted to bifurcate the lanes into multiple endpoints.

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3

Thanks Dusty,for more clear,can I keep the lane0 rotued to M.2 Key E connector,and rotue the lane1&lane2 to nvME PCIE SSD for alternative by customer?

4

Hi,

Only M.2 Key E connector is available to connect any external PCIe devices.

Manikanta

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5

So just to clarify. To bifurcate the 1x4 exposed PCIe bus into multiple x1 channels, a PLX or equivalent switching chip will be required?

6

Hi,

In Jetson Nano developer kit, M.2 Key E connector supports single PCIe lane only.

Thanks,
Manikanta

7

I wasn’t referring to the developer kit. I was speaking more towards developing my own carrier board.

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8

Hi,

Jetson Nano module does bring one x4 PCIe interface to the module pins. So carrier board can be designed to support one PCIe endpoint in x1/x2/x4 mode. To support more than one endpoint, PCIe switch has to be used.

Manikanta

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