65LVPE504 PCIe re-driver polarity reversal

John Wilce

I am using the TI 65LVPE504 as a PCIe re-driver. My layout would benefit from being able to reverse the polarity of the lanes. My PCIe end point does not support polarity reversal but if I was to reverse the polarity on the input and output of the 65LVPE504 would this solve that problem?

However, I notice that the 65LVPE504 can perform receiver detection and this involves driving a common mode voltage on the outputs. I am concerned that this would stop me from reversing the polarity of the lanes.

Thank you

Regards

John

over 13 years ago

0 Elias Villegas M. over 13 years ago

TI__Guru* 76130 points

Hello John,

We are reviewing this question and we'll reply soon.

Regards.

0 Elias Villegas M. over 13 years ago in reply to Elias Villegas M.

TI__Guru* 76130 points

Hello John,

We have reviewed your question and unfortunately the LVPE504 is not bi-directional, so you can not do lane inversion, it only supports line polarity inversion.

Regards.

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65LVPE504 PCIe re-driver polarity reversal