FIR II IP Core: User Guide

ID 683208
Date 8/14/2023
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3. FIR II IP Core Parameters

You define a FIR filter by its coefficients. You specify the filter settings and coefficient options in the parameter editor.

The FIR II IP core provides a default 37-tap coefficient set regardless of the configurations from filter settings. The scaled value and fixed point value are recalculated based on the coefficient bit width setting. The higher the coefficient bit width, the closer the fixed frequency response is to the intended original frequency response with the expense of higher resource usage.

You can load the coefficients from a file. For example, you can create the coefficients in another application such as MATLAB or a user-created program, save the coefficients to a file, and import them into the FIR II IP core.