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  • Altera_Forum's avatar
    Altera_Forum
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    The only LVDS limitation mentioned in the SignalTap chapter of the Quartus handbook:

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    Untappable Signals

    Not all of the post-fitting signals in your design are available in the SignalTap II: post-fitting filter in the Node Finder dialog box. The following signal types cannot be tapped:

    ■ ...

    ■ LVDS—You cannot tap the data output from a serializer/deserializer (SERDES) block.

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  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    Thanks Brad!

    It is really bad news for me though. :( Wonder if there are other ways to probe a serializer output other than using an oscilloscope...