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1、cordic算法verilog实现（简单版）cordic算法verilog实现（简单版）(转载）module cordic(clk, phi, cos, sin);parameter W = 13, W_Z = 14;inputclk;input W_Z-1:0 phi;outputW-1:0 cos, sin;reg W-1:0 cos, sin;reg W-1:0 x8:0, y8:0;reg W_Z-1:0 z7:0;always (posedge clk)beginx0 = 13h4D;/ 修正CORDIC算法的比例因子，An的倒数y0 = 13h00;z0 = phi;/ 旋转45度
2、if(z0W_Z-1) beginx1 = x0 + y0;y1 = y0 - x0;z1 = z0 + 14h65;endelse beginx1 = x0 - y0;y1 = y0 + x0;z1 = z0 - 14h65;end/ 旋转26.57度if(z1W_Z-1)beginx2 = x1 + 1y1W-1, y1W-1:1;y2 = y1 - 1x1W-1, x1W-1:1;z2 = z1 + 14h3B;endelse beginx2 = x1 - 1y1W-1, y1W-1:1;y2 = y1 + 1x1W-1, x1W-1:1;z2 = z1 - 14h3B;end/ 旋转1
3、4.04度if(z2W_Z-1)beginx3 = x2 + 2y2W-1, y2W-1:2;y3 = y2 - 2x2W-1, x2W-1:2;z3 = z2 + 14h1F;endelse beginx3 = x2 - 2y2W-1, y2W-1:2;y3 = y2 + 2x2W-1, x2W-1:2;z3 = z2 - 14h1F;end/ 旋转7.13度if(z3W_Z-1)beginx4 = x3 + 3y3W-1, y3W-1:3;y4 = y3 - 3x3W-1, x3W-1:3;z4 = z3 + 14h10;endelse beginx4 = x3 - 3y3W-1, y3W
4、-1:3;y4 = y3 + 3x3W-1, x3W-1:3;z4 = z3 - 14h10;end/ 旋转3.58度if(z4W_Z-1)beginx5 = x4 + 4y4W-1, y4W-1:4;y5 = y4 - 4x4W-1, x4W-1:4;z5 = z4 + 14h8;endelse beginx5 = x4 - 4y4W-1, y4W-1:4;y5 = y4 + 4x4W-1, x4W-1:4;z5 = z4 - 14h8;end/ 旋转1.79度if(z5W_Z-1)beginx6 = x5 + 5y5W-1, y5W-1:5;y6 = y5 - 5x5W-1, x5W-1:
5、5;z6 = z5 + 14h4;endelse beginx6 = x5 - 5y5W-1, y5W-1:5;y6 = y5 + 5x5W-1, x5W-1:5;z6 = z5 - 14h4;end/ 旋转0.90度if(z6W_Z-1)beginx7 = x6 + 6y6W-1, y6W-1:6;y7 = y6 - 6x6W-1,x6W-1:6;z7 = z6 + 14h2;endelse beginx7 = x6 - 6y6W-1, y6W-1:6;y7 = y6 + 6x6W-1, x6W-1:6;z7 = z6 - 14h2;end/ 旋转0.45度if(z7W_Z-1)beginx8 = x7 + 7y7W-1, y7W-1:7;y8 = y7 - 7x7W-1, x7W-1:7;endelse beginx8 = x7 - 7y7W-1, y7W-1:7;y8 = y7 + 7x7W-1, x7W-1:7;endcos = x8;sin = y8;endendmodule