Forum Discussion
Occasional ContributorE-Tile frequency constraints
Hi,
If you observe issue trying to constrain the output clock ie cannot find in tech map, would you mind to help opening a new Forum case and let me know the case. I will help to route to our timing team to better assistance. Thank you.
Regular ContributorHi Michael,
For your information, I have just received a response from our timing team on the multi frequencies constraint. You may refer to the following timequest cookbook -> example 10 on using clock groups to constraints the same port with different frequencies.
Please let me know if there is any concern. Thank you.
- MichaelB
Hi CheePin,
thanks for the document.
I already tried to constraint the clock like in example 10 but I was not able to hit the frequency correctly.
Due we are using high frequency I'd like to know if there is a possibility to switch to ps or fs for time scale.
Might this be an issue if I define them not accurate enough?
Is it necessary to define the frequency if I define the highest one per default? Can I assume that the lower frequencies are functional as well?
Best regards,
Michael
