Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
Announcements
FPGA community forums and blogs on community.intel.com are migrating to the new Altera Community and are read-only. For urgent support needs during this transition, please visit the FPGA Design Resources page or contact an Altera Authorized Distributor.
21615 Discussions

How to choose a specific PLL

Altera_Forum
Honored Contributor II
1,660 Views

Hi foks,  

 

I am using 2 plls in CycloneIII.  

 

They are all fed by one common clock source. My question is, how to tell Quartus to use specific PLLs for my application. 

 

For example, PLL3 for one of my pll_inst, and PLL4 for another.  

 

 

Thanks, 

 

Frank
0 Kudos
3 Replies
Altera_Forum
Honored Contributor II
789 Views

Make an Assignment in the assignment Editor.

0 Kudos
Altera_Forum
Honored Contributor II
789 Views

The assignment Avatar referred to is in the Assignment Editor Category list under "All --> Locations --> PLL". I usually use a PLL output node name in these assignments, but I think you can also use the PLL hierarchy name like pll:pll_inst|altpll:altpll_component.

0 Kudos
Altera_Forum
Honored Contributor II
789 Views

Yes, I works.  

 

Thank you all guys. have a nice day
0 Kudos
Reply