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Altera_Forum
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18 years ago

connect 2 PLLs in cyclone II

Hi all! I create a project in cycloneII 35. I must use 2 PLLs from 1 external clock. So, I must connect them. But when I do this, there're many problems. For examples, when compiling there's error...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Hello,

Unfortunately you can't do that. As you can see in the page 7-26 and 7-27 of the cyclone II handbook, each PLL can be drived only by its dedicated input ports. Then there is no way to connect one source with two PLLs.

Thanks,