Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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How to limit the min fan-out of auto global clock?

NuvKFC
New Contributor I
185 Views

I set auto global clock on.

But some global clock's fan-out is very low.

I really don't how many fan-out means low.

I assume 1000.

Can I set that only the signal which fan-out is bigger than 1000 can be a global clock?

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sstrell
Honored Contributor III
172 Views

No, but you can manually choose which clocks should be global and which shouldn't using the Global Clock assignment in the Assignment Editor.  Use that assignment along with the Auto Global option (on by default) to manage all your clocks.

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2 Replies
sstrell
Honored Contributor III
173 Views

No, but you can manually choose which clocks should be global and which shouldn't using the Global Clock assignment in the Assignment Editor.  Use that assignment along with the Auto Global option (on by default) to manage all your clocks.

NuvKFC
New Contributor I
111 Views

Hi sstrell

     OK. Thank you very much. But I afraid of choosing improper signals on the global network that slow down the over design. Assigning global clock need many trial and error.

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