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Altera_Forum's avatar
Altera_Forum
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15 years ago

TimeQuest "Warning: Ignored filter ... could not be matched with a port"

I used the TimeQuest Timing wizard to generate an SDC file with setup and hold timing constraints. Here is a snippet from the file: set_input_delay -clock "sinclk" -max 18ns set_input_del...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

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Look in your .fit.rpt. Do these files exist? I've only seen this message when they truly don't work. Perhaps the wizard is looking at port names after elaboration, but they get synthesized out when running a full compile. Just a guess. Run TimeQuest on the back end and go to View -> Name Finder. You can direcly access the post-fit timing database from there.

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As far as I know, these pins are not getting synthesized away, unless the compiler is doing so silently.

.fit.rpt does exist. What should I be looking for here? For the pins in question, I get the I/O assignment warning "Missing drive strength and slew rate". I'm going to try to add additional constraints to see if I can get rid of the warnings.

What do you mean by "Run TimeQuest on the back end"? I can run the TimeQuest analyzer, but the "View" menu does not contain a "Name Finder" option.

Thanks!