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Altera_Forum
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14 years ago

PLL issues in EP3C16

I'm sure I'm missing something simple here. I have a VHDL state machine that is running from a 50MHz input clock, and I want to boost that to 100MHz using a PLL. Either the PLL is not locking or I ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

sorry I'm just getting back around to working on this issue...

thanks very much for those suggestions -- the VCCA supply could very possibly be the issue. Though the VCCA pins are properly decoupled and connected to my 2.5V supply through a ferrite, the 2.5V is also supplying BLVDS i/o pins and the supply runs a little hot. I'm going to try some things on this front and post my findings.