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Occasional ContributorHow to tell Quartus my Arria10 target system CLKUSR frequency is 100MHz?
Hi Steve,
Based on the response that I provided, you need not worry about the constraint on the pin for XCVRs.
As the Quartus is assuming a 125MHz frequency, it is basically constraining it to the maximum allowed frequency for the XCVR applications. If the timing analyzer reports that 125MHz is achieved, then 100MHz will definitely work.Regards,
Aqid
Regular ContributorHi Steve,
Based on the response that I provided, you need not worry about the constraint on the pin for XCVRs.
As the Quartus is assuming a 125MHz frequency, it is basically constraining it to the maximum allowed frequency for the XCVR applications. If the timing analyzer reports that 125MHz is achieved, then 100MHz will definitely work.
Regards,
Aqid
Occasional ContributorHi Aqid
That was my hoped for situation and seems to be confirmed by seemingly normal operations on target -- my concern was 125MHz was required whereas target has 100MHz leading to possible marginal behaviour...
Regards -- Steve
