我想在Verilog中实现FIR滤波器。我已经预先确定了MATLAB中的系数。但我不确定寄存器是否能够正确地传播这些代码。在Verilog中实现FIR滤波器
module fir_filter(
input clock,
input reset,
input wire[15:0] input_sample,
output reg[15:0] output_sample);
parameter N = 13;
reg signed[15:0] coeffs[12:0];
reg [15:0] holderBefore[12:0];
wire [15:0] toAdd[12:0];
always @(*)
begin
coeffs[0]=6375;
coeffs[1]=1;
coeffs[2]=-3656;
coeffs[3]=3;
coeffs[4]=4171;
coeffs[5]=4;
coeffs[6]=28404;
coeffs[7]=4;
coeffs[8]=4171;
coeffs[9]=3;
coeffs[10]=-3656;
coeffs[11]=1;
coeffs[12]=6375;
end
genvar i;
generate
for (i=0; i<N; i=i+1)
begin: mult
multiplier mult1(
.dataa(coeffs[i]),
.datab(holderBefore[i]),
.result(toAdd[i]));
end
endgenerate
always @(posedge clock or posedge reset)
begin
if(reset)
begin
holderBefore[12] <= 0;
holderBefore[11] <= 0;
holderBefore[10] <= 0;
holderBefore[9] <= 0;
holderBefore[8] <= 0;
holderBefore[7] <= 0;
holderBefore[6] <= 0;
holderBefore[5] <= 0;
holderBefore[4] <= 0;
holderBefore[3] <= 0;
holderBefore[2] <= 0;
holderBefore[1] <= 0;
holderBefore[0] <= 0;
output_sample <= 0;
end
else
begin
holderBefore[12] <= holderBefore[11];
holderBefore[11] <= holderBefore[10];
holderBefore[10] <= holderBefore[9];
holderBefore[9] <= holderBefore[8];
holderBefore[8] <= holderBefore[7];
holderBefore[7] <= holderBefore[6];
holderBefore[6] <= holderBefore[5];
holderBefore[5] <= holderBefore[4];
holderBefore[4] <= holderBefore[3];
holderBefore[3] <= holderBefore[2];
holderBefore[2] <= holderBefore[1];
holderBefore[1] <= holderBefore[0];
holderBefore[0] <= input_sample;
output_sample <= (input_sample + toAdd[0] + toAdd[1] +
toAdd[2] + toAdd[3] + toAdd[4] + toAdd[5] +
toAdd[6] + toAdd[7] + toAdd[8] + toAdd[9] +
toAdd[10] + toAdd[11] + toAdd[12]);
end
end
endmodule
这是实现它的最好方法吗?有没有更好的方法来添加?
任何帮助,非常感谢!
此外,将有助于非常赞赏的资源。