Jetson Nano PCIE configration

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?

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.

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?

Hi,

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

Manikanta

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

Hi,

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

Thanks,
Manikanta

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

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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