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.
Occasional ContributorHi 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
