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Altera_Forum
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17 years ago

Feeding an input of a PLL with the output of another PLL - Problem

Hi! I have the following problem: I want to use a Cyclone 2C5F256 as a LVDS receiver and transmitter. The received data comes from a Cyclone 2C35F484 and is then converted into RS485 signa...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

It doesn't work. Cyclone II PLLs can only be clocked from one of four dedicated clock inputs, each. But you should be able to use a common PLL for LVDS RX and TX.