[FPGA tutorial case 13] design and implementation of CIC filter based on vivado core

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MATLAB Tutorial directory

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1. Software version

vivado2019.2

2. This algorithm has theoretical knowledge and IP Nuclear configuration method

       CIC The filter has been proved to be a very effective unit in high-speed decimation and interpolation systems , It has a simple structure , Easy to realize engineering .CIC Filter is a common module in data communication , Generally used for digital down conversion (DDC) And digital up conversion (DUC) System , With the increase of data transmission rate , Cascade comb filter (CIC) It's becoming more and more important .CIC The main features of the filter are , Only use adders 、 Subtracter and register ( No multiplier required ), Suitable for working at high sampling rate .

        In digital down conversion (DDC) in ,CIC( Cascade integral comb ) Filters play an important role . It is mainly used for sampling rate extraction , At the same time, it has the function of low-pass filtering . commonly CIC The decimation filter is shown below ：

In this course , We will learn how to pass IP Nuclear to achieve CIC filter .

  find CIC Filter core , As shown in the figure below ：