Can the C0/C4/C5（PCIE group） be configured as Endpoint?

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Xavier
1

The Xavier OEM explains that the C0/C4/C5 can be configured as Endpoint.
but in the document NVIDIA Jetson AGX Xavier Series PCIe Endpoint Design Guidelines, there is a description that " A Jetson AGX Xavier configured as an Endpoint can connect to another configured as Root Port. Endpoint support is only possible on the PCIe Controller C5 (x8)".
so i wonder that if the C0/C4 can be configured as an Endpints?

3

Hardware capability-wise, both C0 and C4 (along with C5) support operating in the endpoint mode. But, required PCB level support is not present in Jetson AGX Xavier.

4

sorry，i do not get the point，PCB level support？

5

I mean, the REFCLK configuration required to operate C0 and C4 in the endpoint mode is not present at the board level. So, they can’t be operated in the endpoint mode.

6

Thanks for reply