Module cordic (clk,rst_n,ena,phase_in,sin_out,cos_out,eps);
Parameter DATA_WIDTH=8;
Parameter PIPELINE=8;
Input clk;
Input rst_n;
Input ena;
Input [DATA_WIDTH-1:0] phase_in;
Output [DATA_WIDTH-1:0] sin_out;
Output [DATA_WIDTH-1:0] cos_out;
Output [DATA_WIDTH-1:0] eps;
Reg [DATA_WIDTH-1:0] sin_out;
Reg [DATA_WIDTH-1:0] cos_out;
Reg [DATA_WIDTH-1:0] eps;
Reg [DATA_WIDTH-1:0] phase_in_reg;
Reg [DATA_WIDTH-1:0] x0,y0,z0;
Reg [DATA_WIDTH-1:0] x1,y1,z1;
Reg [DATA_WIDTH-1:0] x2,y2,z2;
Reg [DATA_WIDTH-1:0] x3,y3,z3;
Reg [DATA_WIDTH-1:0] x4,y4,z4;
Reg [DATA_WIDTH-1:0] x5,y5,z5;
Reg [DATA_WIDTH-1:0] x6,y6,z6;
Reg [DATA_WIDTH-1:0] x7,y7,z7;
Reg [1:0] quadrant[PIPELINE:0];
Integer i;
//get real quadrant and map to first_n quadrant
Always@(posedge clk or negedge rst_n)
Begin
If(!rst_n)
Phase_in_reg<=8'b0000_0000;
Else
If(ena)
Begin
Case(phase_in[7:6])
2'b00: phase_in_reg<=phase_in;
2'b01: phase_in_reg<=phase_in-8'h40; //-pi/2
2'b10: phase_in_reg<=phase_in-8'h80; //-pi
2'b11: phase_in_reg<=phase_in-8'hc0; //-3pi/2
Default:;
Endcase
End
End
Always@(posedge clk or negedge rst_n)
Begin
If(!rst_n)
Begin
X0<=8'b0000_0000;
Y0<=8'b0000_0000;
Z0<=8'b0000_0000;
End
Else
If(ena)
Begin
X0<=8'h4D; //define aggregate constant Xi=1/P=1/1.6467=0.60725 (Xi=2^7*P+8'h4D)
Y0<=8'h00;
Z0<=phase_in_reg;
End
End
//level 1
Always@(posedge clk or negedge rst_n)
Begin
If(!rst_n)
Begin
X1<=8'b0000_0000;
Y1<=8'b0000_0000;
Z1<=8'b0000_0000;
End
Else
If(ena)
If(z0[7]==1'b0)
Begin
X1<=x0-y0;
Y1<=y0+x0;
The TPU materials type raw cable jacket can guarantee longer lifetime and quality. Coiled cable can be used to carry electrical currents as well as data and signal for telecommunications applications. This versatility makes coil cords ideal for use in environments that are often too rough for non-coiled cable.
It has the ability to extend beyond the natural length at rest, which can be a real space-saving feature. These cords are flexible beyond simple extending and retracting in that they can also be pulled, bent, and twisted without experiencing the metal fatigue of a straight cable.
Flex Coiled Cable Assembly, coiled cable harness, flex coiled wiring cable,High Quality Electrical Wire Harness,light-duty coiled cables
ETOP WIREHARNESS LIMITED , https://www.wireharness-assembling.com