filter.v

65位FIR数字滤波器的设计~~其中有通过仿真得出得数据 ~可以通过数据输入完成滤波实验~对数字滤波器得整个算法进行了分析包括输入分组相加 然后相乘得过程

 
       		SumTaps_neg_1_1<=22'b0;
       		SumTaps_neg_1_2<=22'b0;
       		SumTaps_neg_1_3<=22'b0;
       		SumTaps_neg_1_4<=22'b0;
       		SumTaps_neg_1_5<=22'b0;
       		SumTaps_neg_1_6<=22'b0; 
       		SumTaps_neg_1_7<=22'b0;
       		SumTaps_neg_2_1<=22'b0;
       		SumTaps_neg_2_2<=22'b0;

			f0	<= 15'b0;
			f1	<= 15'b0;
			f2	<= 15'b0;
			f3	<= 15'b0;
			f4	<= 15'b0;
			f5	<= 15'b0;
			f6	<= 15'b0;
			f7	<= 15'b0;
			f8	<= 15'b0;
			f9	<= 15'b0;
			f10	<= 15'b0;
			f11	<= 15'b0;
			f12	<= 15'b0;
			f13	<= 15'b0;
			f14	<= 15'b0;
			f15	<= 15'b0;
			f16	<= 15'b0;
			f17	<= 15'b0;
			f18	<= 15'b0;
			f19	<= 15'b0;
			f20	<= 15'b0;
			f21	<= 15'b0;
			f22	<= 15'b0;
			f23	<= 15'b0;
			f24	<= 15'b0;
			f25	<= 15'b0;
			f26	<= 15'b0;
			f27	<= 15'b0;
			f28	<= 15'b0;
			f29	<= 15'b0;
			f30	<= 15'b0;
			f31	<= 15'b0;
			f32	<= 15'b0;
			f33	<= 15'b0;
			f34	<= 15'b0;
			f35	<= 15'b0;
			f36	<= 15'b0;
			f37	<= 15'b0;
			f38	<= 15'b0;
			f39	<= 15'b0;
			f40	<= 15'b0;
			f41	<= 15'b0;
			f42	<= 15'b0;
			f43	<= 15'b0;
			f44	<= 15'b0;
			f45	<= 15'b0;
			f46	<= 15'b0;
			f47	<= 15'b0;
			f48	<= 15'b0;
			f49	<= 15'b0;
			f50	<= 15'b0;
			f51	<= 15'b0;
			f52	<= 15'b0;
			f53	<= 15'b0;
			f54	<= 15'b0;
			f55	<= 15'b0;
			f56	<= 15'b0;
			f57	<= 15'b0;
			f58	<= 15'b0;
			f59	<= 15'b0;
			f60	<= 15'b0;
			f61	<= 15'b0;
			f62	<= 15'b0;
			f63	<= 15'b0;
			f64	<= 15'b0;
		end
		else if(sumtaps_on)
		begin
			SumTaps_plus_1_1 <= ({7'b0,f1}+{7'b0,f63})+({7'b0,f2}+{7'b0,f62});
        		SumTaps_plus_1_2 <= ({7'b0,f3}+{7'b0,f61})+({7'b0,f4}+{7'b0,f60});
             	SumTaps_plus_1_3 <= ({7'b0,f8}+{7'b0,f56})+({7'b0,f9}+{7'b0,f55});
             SumTaps_plus_1_4 <= ({7'b0,f10}+{7'b0,f54})+({7'b0,f14}+{7'b0,f50});
             SumTaps_plus_1_5 <= ({7'b0,f15}+{7'b0,f49})+({7'b0,f16}+{7'b0,f48});
             SumTaps_plus_1_6 <= ({7'b0,f17}+{7'b0,f47})+({7'b0,f21}+{7'b0,f43});
             SumTaps_plus_1_7 <= ({7'b0,f22}+{7'b0,f42})+({7'b0,f23}+{7'b0,f41});
             SumTaps_plus_1_8 <= ({7'b0,f24}+{7'b0,f40})+({7'b0,f29}+{7'b0,f35});
             SumTaps_plus_1_9 <= ({7'b0,f30}+{7'b0,f34})+({7'b0,f31}+{7'b0,f33});
			SumTaps_plus_1_10 <= {7'b0,f32};
 
             SumTaps_plus_2_1 <= (SumTaps_plus_1_1+SumTaps_plus_1_2)
                                +(SumTaps_plus_1_3+SumTaps_plus_1_4);
             SumTaps_plus_2_2 <= (SumTaps_plus_1_5+SumTaps_plus_1_6)
                                +(SumTaps_plus_1_7+SumTaps_plus_1_8);
			SumTaps_plus_2_3 <= SumTaps_plus_1_9+SumTaps_plus_1_10;

             sumtaps_plus <= SumTaps_plus_2_1+SumTaps_plus_2_2+SumTaps_plus_2_3;
				
             SumTaps_neg_1_1 <= ({7'b0,f0}+{7'b0,f64})+({7'b0,f5}+{7'b0,f59});
             SumTaps_neg_1_2 <= ({7'b0,f6}+{7'b0,f58})+({7'b0,f7}+{7'b0,f57});
             SumTaps_neg_1_3 <= ({7'b0,f11}+{7'b0,f53})+({7'b0,f12}+{7'b0,f52});
             SumTaps_neg_1_4 <= ({7'b0,f13}+{7'b0,f51})+({7'b0,f18}+{7'b0,f46});
             SumTaps_neg_1_5 <= ({7'b0,f19}+{7'b0,f45})+({7'b0,f20}+{7'b0,f44});
             SumTaps_neg_1_6 <= ({7'b0,f25}+{7'b0,f39})+({7'b0,f26}+{7'b0,f38});
             SumTaps_neg_1_7 <= ({7'b0,f27}+{7'b0,f37})+({7'b0,f28}+{7'b0,f36});
            

             SumTaps_neg_2_1 <= (SumTaps_neg_1_1+SumTaps_neg_1_2)
                                +(SumTaps_neg_1_3+SumTaps_neg_1_4);
             SumTaps_neg_2_2 <= SumTaps_neg_1_5+SumTaps_neg_1_6
                                +SumTaps_neg_1_7;

             sumtaps_neg <= SumTaps_neg_2_1+SumTaps_neg_2_2;
			
			for(temp_rep=0;temp_rep<SampData_width;temp_rep=temp_rep+1)
			begin
				f0[temp_rep] <= reg_data_sft[10] && k0[temp_rep];
				f1[temp_rep] <= reg_data_sft[20] && k1[temp_rep];
				f2[temp_rep] <= reg_data_sft[30] && k2[temp_rep];
				f3[temp_rep] <= reg_data_sft[40] && k3[temp_rep];
				f4[temp_rep] <= reg_data_sft[50] && k4[temp_rep];
				f5[temp_rep] <= reg_data_sft[60] && k5[temp_rep];
				f6[temp_rep] <= reg_data_sft[70] && k6[temp_rep];
				f7[temp_rep] <= reg_data_sft[80] && k7[temp_rep];
				f8[temp_rep] <= reg_data_sft[90] && k8[temp_rep];
				f9[temp_rep] <= reg_data_sft[100] && k9[temp_rep];
				f10[temp_rep] <= reg_data_sft[110] && k10[temp_rep];
				f11[temp_rep] <= reg_data_sft[120] && k11[temp_rep];
				f12[temp_rep] <= reg_data_sft[130] && k12[temp_rep];
				f13[temp_rep] <= reg_data_sft[140] && k13[temp_rep];
				f14[temp_rep] <= reg_data_sft[150] && k14[temp_rep];
				f15[temp_rep] <= reg_data_sft[160] && k15[temp_rep];
				f16[temp_rep] <= reg_data_sft[170] && k16[temp_rep];
				f17[temp_rep] <= reg_data_sft[180] && k17[temp_rep];
				f18[temp_rep] <= reg_data_sft[190] && k18[temp_rep];
				f19[temp_rep] <= reg_data_sft[200] && k19[temp_rep];
				f20[temp_rep] <= reg_data_sft[210] && k20[temp_rep];
				f21[temp_rep] <= reg_data_sft[220] && k21[temp_rep];
				f22[temp_rep] <= reg_data_sft[230] && k22[temp_rep];
				f23[temp_rep] <= reg_data_sft[240] && k23[temp_rep];
				f24[temp_rep] <= reg_data_sft[250] && k24[temp_rep];
				f25[temp_rep] <= reg_data_sft[260] && k25[temp_rep];
				f26[temp_rep] <= reg_data_sft[270] && k26[temp_rep];
				f27[temp_rep] <= reg_data_sft[280] && k27[temp_rep];
				f28[temp_rep] <= reg_data_sft[290] && k28[temp_rep];
				f29[temp_rep] <= reg_data_sft[300] && k29[temp_rep];
				f30[temp_rep] <= reg_data_sft[310] && k30[temp_rep];
				f31[temp_rep] <= reg_data_sft[320] && k31[temp_rep];
				f32[temp_rep] <= reg_data_sft[330] && k32[temp_rep];
				f33[temp_rep] <= reg_data_sft[340] && k33[temp_rep];
				f34[temp_rep] <= reg_data_sft[350] && k34[temp_rep];
				f35[temp_rep] <= reg_data_sft[360] && k35[temp_rep];
				f36[temp_rep] <= reg_data_sft[370] && k36[temp_rep];
				f37[temp_rep] <= reg_data_sft[380] && k37[temp_rep];
				f38[temp_rep] <= reg_data_sft[390] && k38[temp_rep];
				f39[temp_rep] <= reg_data_sft[400] && k39[temp_rep];
				f40[temp_rep] <= reg_data_sft[410] && k40[temp_rep];
				f41[temp_rep] <= reg_data_sft[420] && k41[temp_rep];
				f42[temp_rep] <= reg_data_sft[430] && k42[temp_rep];
				f43[temp_rep] <= reg_data_sft[440] && k43[temp_rep];
				f44[temp_rep] <= reg_data_sft[450] && k44[temp_rep];
				f45[temp_rep] <= reg_data_sft[460] && k45[temp_rep];
				f46[temp_rep] <= reg_data_sft[470] && k46[temp_rep];
				f47[temp_rep] <= reg_data_sft[480] && k47[temp_rep];
				f48[temp_rep] <= reg_data_sft[490] && k48[temp_rep];
				f49[temp_rep] <= reg_data_sft[500] && k49[temp_rep];
				f50[temp_rep] <= reg_data_sft[510] && k50[temp_rep];
				f51[temp_rep] <= reg_data_sft[520] && k51[temp_rep];
				f52[temp_rep] <= reg_data_sft[530] && k52[temp_rep];
				f53[temp_rep] <= reg_data_sft[540] && k53[temp_rep];
				f54[temp_rep] <= reg_data_sft[550] && k54[temp_rep];
				f55[temp_rep] <= reg_data_sft[560] && k55[temp_rep];
				f56[temp_rep] <= reg_data_sft[570] && k56[temp_rep];
				f57[temp_rep] <= reg_data_sft[580] && k57[temp_rep];
				f58[temp_rep] <= reg_data_sft[590] && k58[temp_rep];
				f59[temp_rep] <= reg_data_sft[600] && k59[temp_rep];
				f60[temp_rep] <= reg_data_sft[610] && k60[temp_rep];
				f61[temp_rep] <= reg_data_sft[620] && k61[temp_rep];
				f62[temp_rep] <= reg_data_sft[630] && k62[temp_rep];
				f63[temp_rep] <= reg_data_sft[640] && k63[temp_rep];
				f64[temp_rep] <= reg_data_sft[650] && k64[temp_rep];

			end
		end
		else
		begin
			sumtaps_neg <= 22'b0;
			sumtaps_plus <= 22'b0;
		end
	end

/////////////////////////////////////////////////////////////////////////////
////////accumulate process///////////////////////////////////////////////////
	always @(posedge clk or negedge rst_)		
	begin
		if(!rst_)
		begin
			sft_plus_reg	<= 31'b0;
			sft_neg_reg <= 31'b0;
			accum_plus <= 32'b0;
			accum_neg <= 32'b0;
			dout_o <= 33'b0;
		end
		else
		begin
			case(counter_out)
				5'b00110:
					begin
						sft_plus_reg <= {9'b0,sumtaps_plus};
						sft_neg_reg <= {9'b0,sumtaps_neg};
					end
				5'b00111:
					begin
						sft_plus_reg <= {9'b0,sumtaps_plus}<<1;
						sft_neg_reg <= {9'b0,sumtaps_neg}<<1;
					end
				5'b01000:
					begin
						sft_plus_reg <= {9'b0,sumtaps_plus}<<2;
						sft_neg_reg <= {9'b0,sumtaps_neg}<<2;
					end
				5'b01001:
					begin
						sft_plus_reg <= {9'b0,sumtaps_plus}<<3;
						sft_neg_reg <= {9'b0,sumtaps_neg}<<3;
					end
				5'b01010:
					begin
						sft_plus_reg <= {9'b0,sumtaps_plus}<<4;
						sft_neg_reg <= {9'b0,sumtaps_neg}<<4;
					end
				5'b01011:
					begin
						sft_plus_reg <= {9'b0,sumtaps_plus}<<5;
						sft_neg_reg <= {9'b0,sumtaps_neg}<<5;
					end
				5'b01100:
					begin
						sft_plus_reg <= {9'b0,sumtaps_plus}<<6;
						sft_neg_reg <= {9'b0,sumtaps_neg}<<6;
					end
				5'b01101:
					begin
						sft_plus_reg <= {9'b0,sumtaps_plus}<<7;
						sft_neg_reg <= {9'b0,sumtaps_neg}<<7;
					end
				5'b01110:
					begin
						sft_plus_reg <= {9'b0,sumtaps_plus}<<8;
						sft_neg_reg <= {9'b0,sumtaps_neg}<<8;
					end
				5'b01111:
					begin
						sft_plus_reg <= {9'b0,sumtaps_plus}<<9;
						sft_neg_reg <= {9'b0,sumtaps_neg}<<9;
					end
				default:
					begin
						sft_plus_reg <= 31'b0;
						sft_neg_reg <= 31'b0;
					end
			endcase
			if(accum_on)
			begin
				accum_plus <= {1'b0,sft_plus_reg} + accum_plus;
				accum_neg <= {1'b0,sft_neg_reg} + accum_neg;
			end
			if(dout_rdy_o)
			begin   
				dout_o <= accum_plus-accum_neg-33'b0_0000_0010_0000_0000_1011_0110_0000_0000;
				accum_plus <= 32'b0;
				accum_neg <= 32'b0;
			end
		end
	end

endmodule