CORDIC Translate
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随便记录一下下：
[Cordic IP核使用说明以及避坑记录-博客]( "Cordic IP核使用说明以及避坑记录-博客")
本次只用到了Translate，记录一下自己遇到的坑坑
实际配置：
`timescale 1ns / 1ns
module cordic_tb();
reg clk;
wire m_axis_dout_tvalid;
reg s_axis_cartesian_tvalid = 0;
wire [31 : 0] s_axis_cartesian_tdata;
wire [31 : 0] m_axis_dout_tdata;
wire [15:0] x_abs = m_axis_dout_tdata[15:0]; //abs(15:0) fix16_14;
wire [15:0] x_phase = m_axis_dout_tdata[31:16]; //Phase(31:16) fix16_13;
reg [15:0] x_r = 0;
reg [15:0] x_i = 0;
always #10 clk = ~clk;
reg [5:0] cnt ;
reg [1:0] index;
always@(posedge clk)
if(cnt==22) begin cnt <= 0; index <= index + 1;end
else cnt <= cnt + 1;
always@(posedge clk)
case (index)
2'b00: begin
x_r <= 16'b0011_0000_0000_0000;
x_i <= 16'b0011_0000_0000_0000;
end //fix16_14 0.75+0.75i 1
2'b01: begin
x_r <=~16'b0100_0000_0000_0000 + 1'b1;
x_i <= 16'b0011_0000_0000_0000;
end //fix16_14 -1+0.75i 2
2'b10:begin
x_r <=~16'b0001_0000_0000_0000 + 1'b1;
x_i <=~16'b0010_0000_0000_0000 + 1'b1;
end //fix16_14 -0.25-0.5i 3
2'b11: begin
x_r <= 16'b0001_0000_0000_0000;
x_i <=~16'b0010_1000_0000_0000 + 1'b1;
end //fix16_14 0.25-0.625i 4
endcase
assign s_axis_cartesian_tdata = {x_i, x_r};
initial begin
clk = 0;
index = 0;
cnt = 0 ;
index = 0 ;
s_axis_cartesian_tvalid <= 0;
#100
s_axis_cartesian_tvalid <= 1;
end
cordic_translate cordic_ (
.aclk(clk), // input wire aclk
.s_axis_cartesian_tvalid(s_axis_cartesian_tvalid), // input wire s_axis_cartesian_tvalid
.s_axis_cartesian_tdata(s_axis_cartesian_tdata), // input wire [31 : 0] s_axis_cartesian_tdata
.m_axis_dout_tvalid(m_axis_dout_tvalid), // output wire m_axis_dout_tvalid
.m_axis_dout_tdata(m_axis_dout_tdata) // output wire [31 : 0] m_axis_dout_tdata
);
//input Real(15:0) fix16_14; Imag(31:16) fix16_14
//output Real(15:0) fix16_14; Phase(31:16) fix16_13
endmodule
// 调试后还是比较简单捏~
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