Forum Discussion
KRoma6
New Contributor
New ContributorLVDS SERDES using external PLL from IOPLL
Hello,
I am using the LVDS SERDES IP with external PLL provided by the IOPLL. I configured the IOPLL as recommended in the LVDS SERDES IP for Cyclone 10 GX but I am getting an error:
"ext_<clock ...
JonWay_altera
Frequent Contributor
Frequent ContributorHi @KRoma6
Did you use the PLL setting: Access to PLL LVDS_CLK/LOADEN output port
If yes, could you try this on the RTL instead of the Qsys platform?
Lets narrow down if this is a Qsys platform connectivity issue or an LVDS IP issue.
KRoma6Hi JonWay,
Yes I tried both options for the "Access to PLL LVDS_CLK/LOADEN output port": <"LOADEN 0" and "LOADEN 0 & 1">.
So you want to export these signals and connect them within a module?
- JonWay_altera
Generate HDL for both the LVDS and PLL IP. Create a top RTL file and instantiate both IPs there. Connect them together by RTL coding. Check if the problem is still there or not.
