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JLIU45's avatar
JLIU45
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6 years ago

About Arria V LVDS output

I'm uising arria V device in my project, a pair of LVDS pins are used in my design, which are configured as output. It always cannot work well, and by using OSC I watched the output waveform of LVDS ...
SreekumarR_G_Intel's avatar
SreekumarR_G_Intel
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6 years ago

Sorry , I am not sure what is missing here.

Can you check is IO is not open ended ? Pretty much looks like other side is open.

Is there any external termination ?

Thank you ,

regards,

Sree

  • JLIU45's avatar
    JLIU45
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    6 years ago
    Hi, The LVDS output is connected to another LVDS input directly, and there is termination on the receiver side. Also, I’ve mentioned I compared the LVDS output between Arria V and cyclone V, for both the LVDS output is open, the waveform is quite different.