cordic算法verilog實(shí)現(xiàn)（簡(jiǎn)單版）

cordic算法verilog實(shí)現(xiàn)（簡(jiǎn)單版）(轉(zhuǎn)載）module cordic(clk, phi, cos, sin);?parameter ?W = 13, W_Z = 14;?input??clk;?input [W_Z-1:0] ?phi;?output[W-1:0] ? ?cos, sin;???reg [W-1:0] ? cos, sin;?reg [W-1:0] ? x[8:0], y[8:0];?reg [W_Z-1:0] z[7:0];?always @(posedge clk)begin?x[0] <= 13'h4D;??// 修正CORDIC算法的比例因子，An的倒數(shù)?y[0] <= 13'h00;??z[0] <= phi;?// 旋轉(zhuǎn)45度?if(z[0][W_Z-1]) begin??x[1] <= x[0] + y[0];??y[1] <= y[0] - x[0];??z[1] <= z[0] + 14'h65;?end?else begin??x[1] <= x[0] - y[0];??y[1] <= y[0] + x[0];??z[1] <= z[0] - 14'h65;?end?// 旋轉(zhuǎn)26.57度?if(z[1][W_Z-1])begin??x[2] <= x[1] + {{1{y[1][W-1]}}, y[1][W-1:1]};?y[2] <= y[1] - {{1{x[1][W-1]}}, x[1][W-1:1]};?z[2] <= z[1] + 14'h3B;?end?else begin??x[2] <= x[1] - {{1{y[1][W-1]}}, y[1][W-1:1]};?y[2] <= y[1] + {{1{x[1][W-1]}}, x[1][W-1:1]};?z[2] <= z[1] - 14'h3B;?end?// 旋轉(zhuǎn)14.04度?if(z[2][W_Z-1])begin??x[3] <= x[2] + {{2{y[2][W-1]}}, y[2][W-1:2]};?y[3] <= y[2] - {{2{x[2][W-1]}}, x[2][W-1:2]};?z[3] <= z[2] + 14'h1F;?end?else begin??x[3] <= x[2] - {{2{y[2][W-1]}}, y[2][W-1:2]};?y[3] <= y[2] + {{2{x[2][W-1]}}, x[2][W-1:2]};?z[3] <= z[2] - 14'h1F;?end?// 旋轉(zhuǎn)7.13度?if(z[3][W_Z-1])begin??x[4] <= x[3] + {{3{y[3][W-1]}}, y[3][W-1:3]};?y[4] <= y[3] - {{3{x[3][W-1]}}, x[3][W-1:3]};?z[4] <= z[3] + 14'h10;?end?else begin??x[4] <= x[3] - {{3{y[3][W-1]}}, y[3][W-1:3]};?y[4] <= y[3] + {{3{x[3][W-1]}}, x[3][W-1:3]};?z[4] <= z[3] - 14'h10;?end?// 旋轉(zhuǎn)3.58度?if(z[4][W_Z-1])begin??x[5] <= x[4] + {{4{y[4][W-1]}}, y[4][W-1:4]};?y[5] <= y[4] - {{4{x[4][W-1]}}, x[4][W-1:4]};?z[5] <= z[4] + 14'h8;?end?else begin??x[5] <= x[4] - {{4{y[4][W-1]}}, y[4][W-1:4]};?y[5] <= y[4] + {{4{x[4][W-1]}}, x[4][W-1:4]};?z[5] <= z[4] - 14'h8;?end?// 旋轉(zhuǎn)1.79度?if(z[5][W_Z-1])begin??x[6] <= x[5] + {{5{y[5][W-1]}}, y[5][W-1:5]};?y[6] <= y[5] - {{5{x[5][W-1]}}, x[5][W-1:5]};?z[6] <= z[5] + 14'h4;?end?else begin??x[6] <= x[5] - {{5{y[5][W-1]}}, y[5][W-1:5]};?y[6] <= y[5] + {{5{x[5][W-1]}}, x[5][W-1:5]};?z[6] <= z[5] - 14'h4;?end?// 旋轉(zhuǎn)0.90度?if(z[6][W_Z-1])begin??x[7] <= x[6] + {{6{y[6][W-1]}}, y[6][W-1:6]};?y[7] <= y[6] - {{6{x[6][W-1]}},x[6][W-1:6]};?z[7] <= z[6] + 14'h2;?end?else begin??x[7] <= x[6] - {{6{y[6][W-1]}}, y[6][W-1:6]};?y[7] <= y[6] + {{6{x[6][W-1]}}, x[6][W-1:6]};?z[7] <= z[6] - 14'h2;?end?// 旋轉(zhuǎn)0.45度?if(z[7][W_Z-1])begin??x[8] <= x[7] + {{7{y[7][W-1]}}, y[7][W-1:7]};?y[8] <= y[7] - {{7{x[7][W-1]}}, x[7][W-1:7]};?end?else begin??x[8] <= x[7] - {{7{y[7][W-1]}}, y[7][W-1:7]};?y[8] <= y[7] + {{7{x[7][W-1]}}, x[7][W-1:7]};?end?cos <= x[8];?sin <= y[8];?endendmodule?