Programmable Devices
CPLDs, FPGAs, SoC FPGAs, Configuration, and Transceivers
Announcements
Need Forum Guidance? Click here

Search our FPGA Knowledge Articles here.
19339 Discussions

ATX PLL Stuck In Calibration

RClan2
Beginner
161 Views

I have an Arria10 design which includes an ATX PLL. The design operates properly on most boards but on about 10% of boards the ATX PLL never exits calibration ( i have verified the frequency of the refclk on chip as well  as all voltages). I am basically fishing for anyone who has seen this behavior and what they found to be the root cause of their problem as that may apply here as well.

 

Thanks.

0 Kudos
1 Reply
CheePin_C_Intel
Employee
144 Views

Hi,


As I understand it, Andy seems to have helped open an IPS case on this. I have responded to the IPS especially on the CLKUSR requirement. Please let me know if you would require further clarification. Thank you.


Reply