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Altera_Forum
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16 years ago

Cyclone III PLL cascading - lack of information

Hi everyone! I try to run a Design with two PLLs. The first one not reconfigurable, inclk from dedicated clock pin (100MHz), located in PLL1. The second one is reconfigurable, inclk from the first...
Altera_Forum's avatar
Altera_Forum
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16 years ago

Cascading PLLs works in Cyclone III without problems, you get the said "jitter" warning however. If you see no output, something else must be expected wrong in your design. You may want to check the compilation report regarding PLL thoroughly, if it understood your intended configuration.