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Cyclone V FPGA PLL not locking

Vysakh
New User
302 Views

Hi ,

We are using Cyclone V (5CEBA9F23C7) FPGAs In our custom boards .We are using the built in PLL ip for generating clocks required for applications .

In one such board the FPGA PLL is not locking ('locked' signal in PLL ip is low). Inputs to the PLL (clock and reset) are found to be good .

Same image works in other boards we're not observing PLL issue .

What are the ways to debug this issue further ?

 

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AqidAyman_Intel
Employee
213 Views

Hi,


Have you check the VCCA_FPLL for that particular board if they are supplying stable power? This could be the reason for the PLL not locking.


Regards,

Aqid


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AqidAyman_Intel
Employee
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Hi,


Do you need more support on this issue?


Regards,

Aqid


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AqidAyman_Intel
Employee
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As we do not receive any response from you on the previous reply have been provided, please login to ‘https://supporttickets.intel.com’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you by replying to this thread.


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