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LVDS differential input rails flipped

Altera_Forum
Honored Contributor II
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One of the boards that I have received has differential rails flipped i.e. {p,n} are connected as {n,p}. I am wondering if I can still use the board this way and invert the signal inside the fpga? Is there any downside to doing this? 

 

Thank you. 

Best regards, 

Sanjay
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Altera_Forum
Honored Contributor II
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--- Quote Start ---  

One of the boards that I have received has differential rails flipped i.e. {p,n} are connected as {n,p}. I am wondering if I can still use the board this way and invert the signal inside the fpga? Is there any downside to doing this? 

 

--- Quote End ---  

 

This is sometimes done to make the PCB routing possible. Inverting the signal inside the FPGA is fine. 

 

Cheers, 

Dave
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