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99
DW02_mult.v
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////////////////////////////////////////////////////////////////////////////////
//
// This confidential and proprietary software may be used only
// as authorized by a licensing agreement from Synopsys Inc.
// In the event of publication, the following notice is applicable:
//
// (C) COPYRIGHT 1994 - 2018 SYNOPSYS INC.
// ALL RIGHTS RESERVED
//
// The entire notice above must be reproduced on all authorized
// copies.
//
// AUTHOR: KB WSFDB June 30, 1994
//
// VERSION: Simulation Architecture
//
// DesignWare_version: 714fe7a9
// DesignWare_release: O-2018.06-DWBB_201806.3
//
////////////////////////////////////////////////////////////////////////////////
//-----------------------------------------------------------------------------------
//
// ABSTRACT: Multiplier
// A_width-Bits * B_width-Bits => A_width+B_width Bits
// Operands A and B can be either both signed (two's complement) or
// both unsigned numbers. TC determines the coding of the input operands.
// ie. TC = '1' => signed multiplication
// TC = '0' => unsigned multiplication
//
// FIXED: by replacement with A tested working version
// that not only doesn't multiplies right it does it
// two times faster!
// RPH 07/17/2002
// Rewrote to comply with the new guidelines
//------------------------------------------------------------------------------
module DW02_mult(A,B,TC,PRODUCT);
parameter integer A_width = 8;
parameter integer B_width = 8;
input [A_width-1:0] A;
input [B_width-1:0] B;
input TC;
output [A_width+B_width-1:0] PRODUCT;
wire [A_width+B_width-1:0] PRODUCT;
wire [A_width-1:0] temp_a;
wire [B_width-1:0] temp_b;
wire [A_width+B_width-2:0] long_temp1,long_temp2;
//-------------------------------------------------------------------------
// Parameter legality check
//-------------------------------------------------------------------------
initial begin : parameter_check
integer param_err_flg;
param_err_flg = 0;
if (A_width < 1) begin
param_err_flg = 1;
$display(
"ERROR: %m :\n Invalid value (%d) for parameter A_width (lower bound: 1)",
A_width );
end
if (B_width < 1) begin
param_err_flg = 1;
$display(
"ERROR: %m :\n Invalid value (%d) for parameter B_width (lower bound: 1)",
B_width );
end
if ( param_err_flg == 1) begin
$display(
"%m :\n Simulation aborted due to invalid parameter value(s)");
$finish;
end
end // parameter_check
assign temp_a = (A[A_width-1])? (~A + 1'b1) : A;
assign temp_b = (B[B_width-1])? (~B + 1'b1) : B;
assign long_temp1 = temp_a * temp_b;
assign long_temp2 = ~(long_temp1 - 1'b1);
assign PRODUCT = ((^(A ^ A) !== 1'b0) || (^(B ^ B) !== 1'b0) || (^(TC ^ TC) !== 1'b0) ) ? {A_width+B_width{1'bX}} :
(TC)? (((A[A_width-1] ^ B[B_width-1]) && (|long_temp1))?
{1'b1,long_temp2} : {1'b0,long_temp1})
: A * B;
endmodule

103
IIR_Filter.v
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module IIR_Filter (
clk,
rstn,
din_re,
din_im,
a_re,
a_im,
b_re,
b_im,
dout
);
input rstn;
input clk;
input signed [15:0] din_re;
input signed [15:0] din_im;
input signed [31:0] a_re;
input signed [31:0] a_im;
input signed [31:0] b_re;
input signed [31:0] b_im;
output signed [15:0] dout;
wire signed [48:0] mult_x_re;
wire signed [48:0] mult_x_im;
wire signed [54:0] mult_y_re;
wire signed [54:0] mult_y_im;
wire signed [15:0] dout_t;
wire signed [50:0] Ysum_re;
wire signed [50:0] Ysum_im;
reg signed [15:0] dout_r1;
reg signed [50:0] YsumR_re;
reg signed [50:0] YsumR_im;
reg signed [50:0] YsumR1_re;
reg signed [50:0] YsumR1_im;
mult_C #(16,16,32,32) inst_c1 ( .a (din_re ),
.b (din_im ),
.c (a_re ),
.d (a_im ),
.Re (mult_x_re ),
.Im (mult_x_im )
);
mult_C #(32,32,32,32) inst_c2 ( .a (YsumR_re ),
.b (YsumR_im ),
.c (b_re ),
.d (b_im ),
.Re (mult_y_re ),
.Im (mult_y_im )
);
assign Ysum_re = mult_x_re - mult_y_re;
assign Ysum_im = mult_x_im - mult_y_im;
always @(posedge clk or negedge rstn)
if (!rstn)
begin
YsumR_re <= 'h0;
YsumR_im <= 'h0;
end
else
begin
YsumR_re <= {{20{Ysum_re[50]}},Ysum_re[50:20]} + Ysum_re[50];
YsumR_im <= {{20{Ysum_im[50]}},Ysum_im[50:20]} + Ysum_im[50];
end
always @(posedge clk or negedge rstn)
if (!rstn)
begin
YsumR1_re <= 'h0;
end
else
begin
YsumR1_re <= {{16{YsumR_re[50]}},YsumR_re[50:16]};
end
always @(posedge clk or negedge rstn)
if (!rstn)
begin
dout_r1 <= 'h0;
end
else
begin
if(YsumR1_re[16:15]==2'b01)
dout_r1 <= 16'd32767;
else if(YsumR1_re[16:15]==2'b10)
dout_r1 <= -16'd32768;
else
dout_r1 <= YsumR1_re[15:0];
end
assign dout = dout_r1;
endmodule

209
TailCorr_top.v
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module TailCorr_top
(
clk,
rstn,
din_re,
din_im,
a0_re,
a0_im,
b0_re,
b0_im,
a1_re,
a1_im,
b1_re,
b1_im,
a2_re,
a2_im,
b2_re,
b2_im,
a3_re,
a3_im,
b3_re,
b3_im,
a4_re,
a4_im,
b4_re,
b4_im,
a5_re,
a5_im,
b5_re,
b5_im,
dout
);
input rstn;
input clk;
input signed [15:0] din_re;
input signed [15:0] din_im;
input signed [31:0] a0_re;
input signed [31:0] a0_im;
input signed [31:0] b0_re;
input signed [31:0] b0_im;
input signed [31:0] a1_re;
input signed [31:0] a1_im;
input signed [31:0] b1_re;
input signed [31:0] b1_im;
input signed [31:0] a2_re;
input signed [31:0] a2_im;
input signed [31:0] b2_re;
input signed [31:0] b2_im;
input signed [31:0] a3_re;
input signed [31:0] a3_im;
input signed [31:0] b3_re;
input signed [31:0] b3_im;
input signed [31:0] a4_re;
input signed [31:0] a4_im;
input signed [31:0] b4_re;
input signed [31:0] b4_im;
input signed [31:0] a5_re;
input signed [31:0] a5_im;
input signed [31:0] b5_re;
input signed [31:0] b5_im;
output signed [15:0] dout;
wire signed [15:0] IIRin_re;
wire signed [15:0] IIRin_im;
wire signed [15:0] dout_0;
wire signed [15:0] dout_1;
wire signed [15:0] dout_2;
wire signed [15:0] dout_3;
wire signed [15:0] dout_4;
wire signed [15:0] dout_5;
wire signed [18:0] Ysum;
reg signed [15:0] din_r0;
reg signed [15:0] din_r1;
reg signed [15:0] din_r2;
reg signed [15:0] din_r3;
reg signed [15:0] din_r4;
reg signed [15:0] dout_r;
diff inst_diffRe
(
.clk (clk ),
.rstn (rstn ),
.din (din_re ),
.dout (IIRin_re )
);
diff inst_diffIm
(
.clk (clk ),
.rstn (rstn ),
.din (din_im ),
.dout (IIRin_im )
);
IIR_Filter inst_iir_0 (
.clk (clk ),
.rstn (rstn ),
.din_re (IIRin_re ),
.din_im (IIRin_im ),
.a_re (a0_re ),
.a_im (a0_im ),
.b_re (b0_re ),
.b_im (b0_im ),
.dout (dout_0 )
);
IIR_Filter inst_iir_1 (
.clk (clk ),
.rstn (rstn ),
.din_re (IIRin_re ),
.din_im (IIRin_im ),
.a_re (a1_re ),
.a_im (a1_im ),
.b_re (b1_re ),
.b_im (b1_im ),
.dout (dout_1 )
);
IIR_Filter inst_iir_2 (
.clk (clk ),
.rstn (rstn ),
.din_re (IIRin_re ),
.din_im (IIRin_im ),
.a_re (a2_re ),
.a_im (a2_im ),
.b_re (b2_re ),
.b_im (b2_im ),
.dout (dout_2 )
);
IIR_Filter inst_iir_3 (
.clk (clk ),
.rstn (rstn ),
.din_re (IIRin_re ),
.din_im (IIRin_im ),
.a_re (a3_re ),
.a_im (a3_im ),
.b_re (b3_re ),
.b_im (b3_im ),
.dout (dout_3 )
);
IIR_Filter inst_iir_4 (
.clk (clk ),
.rstn (rstn ),
.din_re (IIRin_re ),
.din_im (IIRin_im ),
.a_re (a4_re ),
.a_im (a4_im ),
.b_re (b4_re ),
.b_im (b4_im ),
.dout (dout_4 )
);
IIR_Filter inst_iir_5 (
.clk (clk ),
.rstn (rstn ),
.din_re (IIRin_re ),
.din_im (IIRin_im ),
.a_re (a5_re ),
.a_im (a5_im ),
.b_re (b5_re ),
.b_im (b5_im ),
.dout (dout_5 )
);
always @(posedge clk or negedge rstn)
if (!rstn)
begin
din_r0 <= 'h0;
din_r1 <= 'h0;
din_r2 <= 'h0;
din_r3 <= 'h0;
din_r4 <= 'h0;
end
else
begin
din_r0 <= din_re;
din_r1 <= din_r0;
din_r2 <= din_r1;
din_r3 <= din_r2;
din_r4 <= din_r3;
end
assign Ysum = dout_0 + dout_1 + dout_2 + dout_3 + dout_4 + dout_5 + din_r4;
always@(posedge clk or negedge rstn)
if (!rstn)
begin
dout_r <= 'h0;
end
else
begin
if(Ysum[16:15]==2'b01)
dout_r <= 16'd32767;
else if(Ysum[16:15]==2'b10)
dout_r <= -16'd32768;
else
dout_r <= Ysum[15:0];
end
assign dout = dout_r;
endmodule

37
diff.v
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module diff(
clk,
rstn,
din,
dout
);
input rstn;
input clk;
input signed [15:0] din;
output signed [15:0] dout;
reg [15:0] din_r;
reg [15:0] din_r1;
reg [15:0] out_r;
always@(posedge clk or negedge rstn)
if(!rstn)
begin
din_r <= 16'd0;
din_r1 <= 16'd0;
out_r <= 16'd0;
end
else
begin
din_r <= din;
din_r1 <= din_r;
out_r <= din_r - din_r1;
end
assign dout = out_r;
endmodule

53
mulc_C.v
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module mult_C(
a,
b,
c,
d,
Re,
Im
);
parameter integer A_width = 8;
parameter integer B_width = 8;
parameter integer C_width = 8;
parameter integer D_width = 8;
input signed [A_width-1:0] a;
input signed [B_width-1:0] b;
input signed [C_width-1:0] c;
input signed [D_width-1:0] d;
output signed [A_width+C_width:0] Re;
output signed [A_width+D_width:0] Im;
wire signed [A_width+C_width-1:0] ac;
wire signed [B_width+D_width-1:0] bd;
wire signed [A_width+D_width-1:0] ad;
wire signed [B_width+C_width-1:0] bc;
DW02_mult #(A_width,C_width) inst_c1( .A (a ),
.B (c ),
.TC (1'b1 ),
.PRODUCT (ac )
);
DW02_mult #(B_width,D_width) inst_c2( .A (b ),
.B (d ),
.TC (1'b1 ),
.PRODUCT (bd )
);
DW02_mult #(A_width,D_width) inst_c3( .A (a ),
.B (d ),
.TC (1'b1 ),
.PRODUCT (ad )
);
DW02_mult #(B_width,C_width) inst_c4( .A (b ),
.B (c ),
.TC (1'b1 ),
.PRODUCT (bc )
);
assign Re = ac - bd;
assign Im = ad + bc;
endmodule