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Altera_Forum
Honored Contributor
Honored ContributorFrequency Selection (Clock Multiplexing)
Hello,
I would to like to know a way for selecting one frequency at a time from the output frequencies from an ALTPLL that generates 8 or more different frequencies. I’m trying to use ALTCLKCTRL but it has a limited number of inputs. I'm using Stratix V FPGA. So, do you have any suggestions? Thanks4 Replies
Altera_ForumI don't know a way to do this, but could you reconfigure the PLL for eight different frequencies and connect to a single output?
- Altera_Forum
I need some kind of multiplexing to select a new frequency while the FPGA is still running.
- Altera_Forum
You can reconfigure the PLL while the FPGA is running.
- Altera_Forum
Yes, check out PLL reconfiguration.
https://www.altera.com/en_us/pdfs/literature/an/an661.pdf
