[FPGA tutorial case 30] DDS direct digital frequency synthesizer based on FPGA -- frequency accuracy analysis with MATLAB

FPGA Tutorial directory

MATLAB Tutorial directory

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1. Software version

vivado2019.2,matlab2021a

2. take vivado The simulation data of is saved locally txt In file

        In the last topic , We implemented a basic DDS, In this course , We will use matlab Yes DDS The output frequency of . First of all, let's talk about the last topic testbench Make changes , bring vivado The simulation data can be saved . The modified testbench as follows ：

`timescale 1ns / 1ps
//
// Company: 
// Engineer: 
// 
// Create Date: 2022/04/24 20:00:13
// Design Name: 
// Module Name: TEST_tops
// Project Name: 
// Target Devices: 
// Tool Versions: 
// Description: 
// 
// Dependencies: 
// 
// Revision:
// Revision 0.01 - File Created
// Additional Comments:
// 
//


module TEST_tops;
 reg i_clk;
 reg