Floating point square root of vivado IP core floating point

Vivado IP Core floating point number square root Floating-point

Catalog

Preface

One 、 Floating point number square root example

Two 、Floating-point IP Core configuration steps

3、 ... and 、 Simulation

1. Top level code

2. Simulation code

Four 、 Analysis of simulation results

summary

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Preface

         With the continuous development of manufacturing technology , Field programmable logic gate array （FPGA） More and more integration , More and more applications , Among them, some mathematical processing classes must be used when processing digital signals IP nucleus . Recently, research on Spatial Adaptive Anti-jamming Technology is under way FPGA Hardware implementation , Some of them are inevitably used IP nucleus , Today from Square root of floating point number Let's briefly introduce vivado In the middle of Floating-point This IP Nuclear bar , I hope it can help you in your study .

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Tips ： The following is the main body of this article , All are original by the author , It's not easy to write an article , I hope you will attach a link to this article when reprinting .

One 、 Floating point number square root example

         In order to facilitate the analysis of the results of the later simulation , Here we list Square root of floating point number Example , The following example is directly used for simulation , To verify whether the simulation results are correct .

        example： Set floating point number a=32'h3EB851EC, namely a=0.36, be =32'h3F19999A, namely

=0.6. 

Two 、Floating-point IP Core configuration steps

        1. First configuration Operation Selection Interface , Pictured 1 Shown .

chart 1 Operation Selection Interface configuration

        2. Next configuration Precision of Inputs Interface , Pictured 2 Shown .

chart 2 Precision of Inputs   Interface configuration

        3. Then configure Optimizations Interface , Pictured 3 Shown .

chart 3 Optimizations   Interface configuration

         4. Final configuration Interface Options Interface , Pictured 4 Shown .

chart 4 Interface Options   Interface configuration

above 4 After all the interfaces are configured, you can click on the lower right corner OK Button generation prescribing IP nucleus .

3、 ... and 、 Simulation

1. Top level code

Build a top-level module , Name it float_sqrt, Used to instantiate the just generated IP nucleus .

The code is as follows ：

`timescale 1ns / 1ps
//
// Company: cq university
// Engineer: clg
// Create Date: 2022/07/28 10:26:26
// Design Name: 
// Module Name: float_sqrt
// Project Name: 
// Target Devices: 
// Tool Versions: 2017.4
// Description: 
// Dependencies: 
// Revision:1.0
// Revision 0.01 - File Created
// Additional Comments:
//

module float_sqrt(
input clk,                   // Input clock signal 
input a_valid,               // Input data valid signal 
input [31 : 0] a_data,       // input data 
output wire re_valid,        // Output result valid signal 
output wire [31 : 0] re_data // Output the square root result 
    );
    
    
float_sqrt_ip u1_float_sqrt_ip (  // Exemplification IP nucleus 
      .aclk(clk),                                                     
      .s_axis_a_tvalid(a_valid),                   
      .s_axis_a_tdata(a_data),                     
      .m_axis_result_tvalid(re_valid),  
      .m_axis_result_tdata(re_data)    
    );
endmodule

2. Simulation code

Build a simulation module , Name it float_sqrt_tb, It is used to simulate the instantiation of the top-level module just now IP nucleus .

The code is as follows ：

`timescale 1ns / 1ps
//
// Company: cq university
// Engineer: clg
// Create Date: 2022/07/28 10:34:15
// Design Name: 
// Module Name: float_sqrt_tb
// Project Name: 
// Target Devices: 
// Tool Versions: 2017.4
// Description: 
// Dependencies: 
// Revision:1.0
// Revision 0.01 - File Created
// Additional Comments:
//

module float_sqrt_tb();
reg clk;
reg a_valid;
reg [31:0] a_data;
wire re_valid;
wire [31:0] re_data;

float_sqrt u1_float_sqrt(
.clk(clk),
.a_valid(a_valid),
.a_data(a_data),
.re_valid(re_valid),
.re_data(re_data)

);

always #5 clk=~clk;
initial begin
    clk=1'b0;
#15;a_valid=1'b1;
       a_data=32'h3EB851EC;  //3.6    
#280;a_valid=1'b0;  
end


endmodule

Four 、 Analysis of simulation results

The simulation results are shown in the figure 5 Shown , Compare the examples of floating-point number square root listed above , It can be seen that this module successfully realizes the square root of floating-point numbers .

chart 5 Simulation results

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summary

This time, I introduce How do you use it? vivado Medium Floating-point IP Verify the square root of the floating-point number .