Intel: In the EMIF Spec Estimator, the Maximum Frequency at which the FPGA and memory device can be operated at maximum and the corresponding memory device speed grade (Memory Device Speed Grade) may differ significantly. In this case, is it necessary to use the specified Memory Device Speed Grade?

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Intel: The Maximum Frequency at which the FPGA and memory device can operate at maximum in the EMIF Spec Estimator and the corresponding memory device speed grade Memory Device Speed Grade values may differ greatly. In this case, should I use the specified Memory Device Speed Grade?

Category: External memory interface
tool:-
device:-

You must use a memory device with the indicated speed grade.
This is to secure more IO timing margins on the memory side in order to complement the IO timing margins on the FPGA side.

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