Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

How do I cascade two PLLs?

Hi - In order to get a particular clock ratio, I need to cascade two plls. PLL0 has a pin input, and a single output. PLL1's input is the output of the first PLL, and has multiple outputs which go ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Once I routed the first pll output to clock output pin, which was connected to clock input pin of second pll. This worked fine, although I didn't measure the jitter performance of the second pll.

-Topi