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MDavi51
Beginner
308 Views

How to enable lane reversal in Arria 10 PCIe interface

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Hi all,

according to appendix B of the Arria 10 PCIe User Guide

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ug/archives/ug-01145_avmm-1...

it is possible to reverse the order of the PCIe lanes. This would be very useful for the routing, but I can't find how to enable it.

 

Have I missed the buttor, does it work automatically or does this feature not exist?

 

I am in the layout now and would not want to have to do the layout twice if this feature does not work properly...

Yours,

Marc.

 

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1 Solution
BoonT_Intel
Moderator
83 Views

Hi Sir,

Lane reversal is supported and is done automatically during link training.

 

Just to share more on PCIe. Even a device does not support lane reversal. The upstream device (eg. RP) will do the lane reversal when it detect the end point unable to make lane reversal.

 

 

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BoonT_Intel
Moderator
84 Views

Hi Sir,

Lane reversal is supported and is done automatically during link training.

 

Just to share more on PCIe. Even a device does not support lane reversal. The upstream device (eg. RP) will do the lane reversal when it detect the end point unable to make lane reversal.

 

 

View solution in original post

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