AN-1073 Odd/Fractional frequency dividers

It is often necessary to divide a signal frequency by a fixed coefficient, which is simple if this coefficient is an even number equal to 2, 4, 8 and so on. However, dividing by odd or fractional coefficients is a more complicated task. Using the LUTs and DFFs resources in GreenPAK, one can efficiently divide a given frequency by 1.5, 2.5, 3, 3.5, 4.5, 5, and many other coefficients.


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