NX Orin PCIe0 SWAP

Robotics & Edge Computing Jetson Systems Jetson Orin NX
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1

Hi team,

This is urgent!

I’m using all 4 Jetson ORIN PCIE0 channels to connect to an M.2 SSD.

I have two questions:

  1. Is it possible to swap positive and negative signals within the TX and RX lines

and does this require a new driver for ORIN?

  1. What are the requirements for pair to pair skew for Clock, TX and RX lines?
3

Hi Team,
Any feedback?

5

Every PCIe lane supports polarity inversion. In multi-lane PCIe configuration, each lane can have polarity inversion enabled for better PCB routing as needed. This is handled automatically during the PCIe link training process so you dont need to do anything in software. Any combination of lanes can be P/N swapped.

For pair to pair skew, please refer to the routing requirement in Orin NX Design Guide doc in DLC.