DDS的AM調(diào)幅信號(hào)實(shí)現(xiàn) 語言為verilog

ID:366331 · 發(fā)表于 2018-7-6 15:20

詳情見附件，所用語言為verilog。
源碼

module AM_Sine
(
input clk,
input [15:0]Usine_1k,
input [15:0]Sine_Range,
input [15:0] M, //調(diào)制度0.1~1,設(shè)為0~65536，最后除以65536 用位移來操作2^16次方
output [15:0]AM_OUT,
output [15:0]AM_Tiaozhi,
output [15:0]Reg_Zai
);
wire [15:0]Sine_sign=Sine_Range+16'h8000;//有符號(hào)數(shù)
wire [15:0]Zaibo;
reg [2:0]zero=0;
//assign Zaibo[15:0]=zero[0]+Sine_Range[14:0];
assign Zaibo=Sine_Range>>1;
reg [15:0]Reg_Zaibo=0;
always @(clk)
begin
if(Sine_Range[15])begin
Reg_Zaibo=Zaibo;
end
else begin
Reg_Zaibo=32768-Zaibo; //最高位為0時(shí)是正數(shù)
end
end
assign Reg_Zai=Reg_Zaibo;
wire [15:0]Sine_1k;
assign Sine_1k=Usine_1k>>1;
wire [31:0]Ma_Tiaozhi;
wire [15:0]TiaoZhi;
wire [15:0]M_1=65535-M;
wire [15:0]constant=32768;
wire [31:0]result1;
wire [31:0]result2;
wire [31:0]RMa_Tiaozhi;
assign Ma_Tiaozhi=result1+result2;
assign RMa_Tiaozhi=Ma_Tiaozhi>>16;
//assign TiaoZhi[15:0]=RMa_Tiaozhi[15:0];
assign TiaoZhi[15:0]=Ma_Tiaozhi[31:16];//加一個(gè)偏移
assign AM_Tiaozhi=TiaoZhi;
wire [31:0]AM_OUT32;
wire [31:0]AM_OUT16;
assign AM_OUT16=AM_OUT32>>16;
wire [15:0]UAM_OUT;
assign {UAM_OUT[15:0]}=Sine_Range[15]+AM_OUT16[14:0];
//assign {UAM_OUT[15:0]}=AM_OUT32[31:16];
//assign AM_OUT=UAM_OUT+16'h8000;
//assign AM_OUT=UAM_OUT;
//always @(clk)begin
//RMa_Tiaozhi=Ma_Tiaozhi>>16;
//end
Mult16_16_clk Mult1 (
.clock ( clk),
.dataa ( Usine_1k), //Usine_1k--->Sine_1k
.datab ( M),
.result ( result1 )
);
Mult16_16_clk Mult2 (
.clock ( clk ),
.dataa ( constant),
.datab ( M_1 ),
.result ( result12)
);
Mult16_16_clk Mult3 (
.clock ( clk ),
.dataa ( Reg_Zaibo), //Zaibo->Reg_Zaibo
.datab ( TiaoZhi),//Tiaozhi->Usine_1k
.result ( AM_OUT32)
);
Mult_Sign Mult4 (
.clock ( clk ),
.dataa ( test ),
.datab ( Sine_sign ),
.result ( result_sig )
);
wire [16:0]Tiaozhi_17=RMa_Tiaozhi[16:0];
//assign Tiaozhi_17=RMa_Tiaozhi[;
wire [32:0]result_sig;
wire [32:0]result_sign;
assign result_sign=result_sig-33'h100000000;
assign {AM_OUT[15:0]}=result_sign[32:17];
wire [31:0]tiao=((Usine_1k*M)+(16'h8000*M_1))>>16;
wire [16:0]test=tiao[16:0];
endmodule

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