Pin type of PCIe CLKREQ at root complex for AGX Orin

Robotics & Edge Computing Jetson Systems Jetson AGX Orin
1

Hi,

I have a question about the PEX_x_CLKREQ_N pin type as described in the AGX Orin Design Guide.
When Jetson is RC, Table 7-16 shows it as input/output (I/O), but Table 7-18 shows it as input (I).
When Jetson is acting as an RC, I think this pin type is input, not bidirectional, is this correct?

[Table 7-16]

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image715×198 21.2 KB

[Table 7-18]

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image730×410 36.7 KB

Best Regards,
UNA

3

Hi NVIDIA-Team,

Could someone please respond to me regarding this issue?

Best Regards,
UNA

4

Yes, this pin is input as Root Port. But the pin type itself is I/O as it can be ouput as End Point. We’ll consider if need to change to Input in Table 7-16, thanks.