数字下变频 DDC cic hb fir滤波器的设计

基于FPGA 的数字下变频 cic hb fir滤波器的设计

%                                                                                                                                       
%THIS IS A WIZARD GENERATED FILE. DO NOT EDIT THIS FILE!                                                                                
%                                                                                                                                       
%---------------------------------------------------------------------------------------------------------                              
%This is a filter withfixed coefficients 
%This Model Only Support Single Channel Input Data. 
%Please input:                                                                                                                          
%data vector: 		stimulation（1:n）                                                                                                 
%                                                                                                                                       
%    This Model Only Support FIR_WIDTH to 51 Bits
%                                                                                                                                       
%FILTER PARAMETER                                                                                                                       
%Input Data Type:	Signed
%Input Data Width:	24
%FIR Width （Full Calculation Width Before Output Width Adjust） :   37
%-----------------------------------------------------------------------------------------------------------

	%MegaWizard Scaled Coefficient Values
	function  output = FIR_Compiler_mlab_mat （stimulation output）
	coef_matrix=[0 0 0 0 1 1 -2 -3 4 5 -6 -8 10 12 -14 -17 20 23 -27 -32 37 44 -52 -63 77 96 -127 -180 304 919 919 304 -180 -127 96 77 -63 -52 44 37 -32 -27 23 20 -17 -14 12 10 -8 -6 5 4 -3 -2 1 1 0 0 0 0 ];
	INTER_FACTOR  = 1;
	DECI_FACTOR  = 1; 
	MSB_RM  = 0;
	MSB_TYPE  = 0;
	LSB_RM  = 0;
	LSB_TYPE  = 0;
	FIR_WIDTH  = 37;
	OUT_WIDTH  = FIR_WIDTH - MSB_RM - LSB_RM ;
	DATA_WIDTH = 24;
            
	data_type= 1;

        % check size of inputs.
        [DXDY] = size（stimulation）;
        [CXCY] = size（coef_matrix）;
        if （CX ~= DY * INTER_FACTOR）
	        fprintf（‘WARNING : coef_matrix size and input data size is not match\n‘）;
        end
        
        %fill coef_matrix to length of data with the latest coef set
        if （CX < DY * INTER_FACTOR）
            for i= CX +1:DY * INTER_FACTOR
                coef_matrix（i:） = coef_matrix（CX:）;
            end
        end

        %check if input is integer
       	int_sti=round（stimulation）;
	    T = （int_sti ~= stimulation）;
	    if （max（T）~=0）
	        fprintf（‘WARNING : Integer Input Expected: Rounding Fractional Input to Nearest Integer...\n‘）;
	    end
	    
	    %Input overflow check
	    switch  data_type
	    case 1
	        %set max/min for signed
	        

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       7121  2010-08-23 20:15  ddc\AD_lvds.asm.rpt

     文件      37892  2010-08-17 10:30  ddc\AD_lvds.bdf

     文件        330  2010-08-18 09:31  ddc\AD_lvds.cdf

     文件         26  2010-08-23 20:15  ddc\AD_lvds.done

     文件        239  2010-08-18 09:22  ddc\AD_lvds.dpf

     文件     591488  2010-08-23 20:15  ddc\AD_lvds.fit.rpt

     文件        617  2010-08-23 20:14  ddc\AD_lvds.fit.smsg

     文件        619  2010-08-23 20:14  ddc\AD_lvds.fit.summary

     文件       9492  2010-08-23 20:15  ddc\AD_lvds.flow.rpt

     文件        227  2010-08-23 20:15  ddc\AD_lvds.jdi

     文件    4870107  2010-08-23 20:12  ddc\AD_lvds.map.rpt

     文件      10086  2010-08-23 20:12  ddc\AD_lvds.map.smsg

     文件        475  2010-08-23 20:12  ddc\AD_lvds.map.summary

     文件      79249  2010-08-23 20:14  ddc\AD_lvds.pin

     文件    2097354  2010-08-18 10:22  ddc\AD_lvds.pof

     文件        909  2010-08-09 09:24  ddc\AD_lvds.qpf

     文件       9647  2010-08-31 11:04  ddc\AD_lvds.qsf

     文件        615  2010-08-31 11:04  ddc\AD_lvds.qws

     文件   11616391  2010-08-16 14:53  ddc\AD_lvds.sim.rpt

     文件    1090938  2010-08-18 10:22  ddc\AD_lvds.sof

     文件     440740  2010-08-23 20:15  ddc\AD_lvds.tan.rpt

     文件       5043  2010-08-23 20:15  ddc\AD_lvds.tan.summary

     文件    1846617  2010-08-18 10:22  ddc\AD_lvds.ttf

     文件     375863  2010-08-16 16:52  ddc\AD_lvds.vwf

     文件    2097354  2010-08-18 09:53  ddc\AD_lvds0819.pof

     文件    1090982  2010-08-23 20:15  ddc\AD_lvds_time_limited.sof

     文件       4338  2009-04-03 13:33  ddc\CMD_decoder_1.v

     文件       1977  2010-08-12 14:19  ddc\counter12.bsf

     文件        529  2010-08-12 14:19  ddc\counter12.v

     文件       3638  2010-08-10 09:44  ddc\db\add_sub_9og.tdf

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