名稱：QuartusFIR低通濾波器設(shè)計(jì)verilog代碼

軟件：Quartus

語言：Verilog

代碼功能：

FIR低通濾波器設(shè)計(jì)：

使用移位、相乘再相加的的方式設(shè)計(jì)FIR低通濾波器。

濾波器系數(shù)如下：

Radix = 16;

Coefficient_Width = 12;

CoefData = 1be,

2d8,

3de,

498,

4db,

498,

3de,

2d8,

1be;

FPGA代碼Verilog/VHDL代碼資源下載：www.hdlcode.com

演示視頻：

設(shè)計(jì)文檔：

1. 工程文件

2. 程序文件

3. 程序編譯

4. Testebnch

5. 仿真圖

部分代碼展示:

//FIR濾波器
module?FIR(
input?clk,//時(shí)鐘
input?reset_p,//高電平復(fù)位
input??[11:0]data_in,//數(shù)據(jù)
output?[11:0]fir_data//濾波后結(jié)果
);
reg??[11:0]?shift_data_0=12'd0;
reg??[11:0]?shift_data_1=12'd0;
reg??[11:0]?shift_data_2=12'd0;
reg??[11:0]?shift_data_3=12'd0;
reg??[11:0]?shift_data_4=12'd0;
reg??[11:0]?shift_data_5=12'd0;
reg??[11:0]?shift_data_6=12'd0;
reg??[11:0]?shift_data_7=12'd0;
reg??[11:0]?shift_data_8=12'd0;
//移位寄存器，每個(gè)時(shí)鐘移位一次
always?@(posedge?clk?or?posedge?reset_p)
????begin
????????if(reset_p)
????????begin
????????????shift_data_0<=12'd0;
????????????shift_data_1<=12'd0;
????????????shift_data_2<=12'd0;
????????????shift_data_3<=12'd0;
????????????shift_data_4<=12'd0;
????????????shift_data_5<=12'd0;
????????????shift_data_6<=12'd0;
????????????shift_data_7<=12'd0;
shift_data_8<=12'd0;
????????end
????????else
????????begin//數(shù)據(jù)延遲
shift_data_0<=data_in;
????????????shift_data_1<=shift_data_0;
????????????shift_data_2<=shift_data_1;
????????????shift_data_3<=shift_data_2;
????????????shift_data_4<=shift_data_3;
????????????shift_data_5<=shift_data_4;
????????????shift_data_6<=shift_data_5;
????????????shift_data_7<=shift_data_6;
shift_data_8<=shift_data_7;
????????end
????end
wire?[12:0]?add_0;
wire?[12:0]?add_1;
wire?[12:0]?add_2;
wire?[12:0]?add_3;
wire?[12:0]?add_4;
assign?add_0=shift_data_0+shift_data_8;
assign?add_1=shift_data_1+shift_data_7;
assign?add_2=shift_data_2+shift_data_6;
assign?add_3=shift_data_3+shift_data_5;
assign?add_4=shift_data_4;
wire?[24:0]?mul_data_0;
wire?[24:0]?mul_data_1;
wire?[24:0]?mul_data_2;
wire?[24:0]?mul_data_3;
wire?[24:0]?mul_data_4;
//1be,
//2d8,
//3de,
//498,
//4db,
//498,
//3de,
//2d8,
//1be;
//input??clock;
//input[12:0]??dataa;
//input[11:0]??datab;
//output[24:0]??result;
//調(diào)用乘法器IP
multi0_mult?(
.clock?(?clk?),
.dataa?(?add_0?),
.datab?(?12'h1be?),
.result?(?mul_data_0?)
);
multi1_mult?(
.clock?(?clk?),
.dataa?(?add_1?),
.datab?(?12'h2d8?),
.result?(?mul_data_1?)
);
multi2_mult?(
.clock?(?clk?),
.dataa?(?add_2?),
.datab?(?12'h3de?),
.result?(?mul_data_2?)
);
multi3_mult?(
.clock?(?clk?),
.dataa?(?add_3?),
.datab?(?12'h498?),
.result?(?mul_data_3?)
);
multi4_mult?(
.clock?(?clk?),
.dataa?(?add_4?),
.datab?(?12'h4db?),
.result?(?mul_data_4?)
);
wire?[25:0]?fir_add;
assign?fir_add=mul_data_0+mul_data_1+mul_data_2+mul_data_3+mul_data_4;
assign?fir_data=fir_add[25:14];//取高12位輸出
endmodule

點(diǎn)擊鏈接獲取代碼文件：http://www.hdlcode.com/index.php?m=home&c=View&a=index&aid=410