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Altera_Forum's avatar
Altera_Forum
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16 years ago

Constraining PLL in TimeQuest

Hello, I was waondering how to use derive_pll_clocks comand in TimeQuset. TimeQuest can't reflect new frequency. I did... 1.I grenarated SDC File from QSF File. 2.I changed input...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Thank you golgo. I followed your suggestion ,

and reflect new frequsnecy in TimeQuest's clock Summary.

so I have a question.

what's meaning of -use_tan_name in derive_pll_clocks Command?

on-line help said

-create_base_clocks: Creates base clocks on input clock ports of the design that are feeding the PLL

-use_tan_name: Use net names as clock names

I could understand -create_base_clocks, but I couldn't understand -use_tan_name.