TailCorr/rtl/z_dsp/IIR_top.v

module  IIR_top #(
 parameter data_out_width = 18
,parameter coef_width	  = 32
,parameter a0_width	  = 32
,parameter b0_width       = 29
,parameter b0_i_width	  = 29
,parameter b0_o_width	  = 19
,parameter a1_width	  = 19
,parameter b1_width       = 19
,parameter b1_i_width	  = 19
,parameter b1_o_width	  = 19
,parameter a2_width	  = 21
,parameter b2_width       = 21
,parameter b2_i_width	  = 19
,parameter b2_o_width	  = 19
,parameter a3_width	  = 21
,parameter b3_width       = 21
,parameter b3_i_width	  = 19
,parameter b3_o_width	  = 19
,parameter a4_width	  = 20
,parameter b4_width       = 20
,parameter b4_i_width	  = 19
,parameter b4_o_width	  = 18
,parameter a5_width	  = 21
,parameter b5_width       = 21
,parameter b5_i_width	  = 18
,parameter b5_o_width	  = 18
,parameter a6_width	  = 21
,parameter b6_width       = 21
,parameter b6_i_width	  = 18
,parameter b6_o_width	  = 18
,parameter a7_width	  = 22
,parameter b7_width       = 22
,parameter b7_i_width	  = 18
,parameter b7_o_width	  = 18
)
(
 input   rstn
,input   clk
,input   en
,input   signed [15   :0]   IIRin_p0                  // x(8n+9)   
,input   signed [15   :0]   IIRin_p1                  // x(8n+10) 
,input   signed [15   :0]   IIRin_p2                  // x(8n+11) 
,input   signed [15   :0]   IIRin_p3                  // x(8n+12) 
,input   signed [15   :0]   IIRin_p4                  // x(8n+13) 
,input   signed [15   :0]   IIRin_p5                  // x(8n+14) 
,input   signed [15   :0]   IIRin_p6                  // x(8n+15) 
,input   signed [15   :0]   IIRin_p7                  // x(8n+16)
,input   signed [15   :0]   IIRin_p0_r2               // x(8n+9)  delay  2M -> x(8n- 7)   
,input   signed [15   :0]   IIRin_p1_r4               // x(8n+10) delay  4M -> x(8n-22) 
,input   signed [15   :0]   IIRin_p2_r6               // x(8n+11) delay  6M -> x(8n-37) 
,input   signed [15   :0]   IIRin_p3_r8               // x(8n+12) delay  8M -> x(8n-52) 
,input   signed [15   :0]   IIRin_p4_r10              // x(8n+13) delay 10M -> x(8n-67) 
,input   signed [15   :0]   IIRin_p5_r12              // x(8n+14) delay 12M -> x(8n-82) 
,input   signed [15   :0]   IIRin_p6_r14              // x(8n+15) delay 14M -> x(8n-97) 
,input   signed [31   :0]   a_re
,input   signed [31   :0]   b_re
,input   signed [31   :0]   ab_re
,input   signed [31   :0]   abb_re
,input   signed [31   :0]   ab_pow3_re
,input   signed [31   :0]   ab_pow4_re
,input   signed [31   :0]   ab_pow5_re
,input   signed [31   :0]   ab_pow6_re
,input   signed [31   :0]   ab_pow7_re
,input   signed [31   :0]   b_pow8_re

,output  signed [data_out_width-1   :0]   IIRout_p0   // y(8n-8)
,output  signed [data_out_width-1   :0]   IIRout_p1   // y(8n-23)
,output  signed [data_out_width-1   :0]   IIRout_p2   // y(8n-38)
,output  signed [data_out_width-1   :0]   IIRout_p3   // y(8n-53)
,output  signed [data_out_width-1   :0]   IIRout_p4   // y(8n-68)
,output  signed [data_out_width-1   :0]   IIRout_p5   // y(8n-83)
,output  signed [data_out_width-1   :0]   IIRout_p6   // y(8n-98)
,output  signed [data_out_width-1   :0]   IIRout_p7   // y(8n-113)
                        );

wire signed [b0_o_width- 1:0] IIRout_p0_re;
wire signed [b1_o_width- 1:0] IIRout_p1_re;
wire signed [b2_o_width- 1:0] IIRout_p2_re;
wire signed [b3_o_width- 1:0] IIRout_p3_re;
wire signed [b4_o_width- 1:0] IIRout_p4_re;
wire signed [b5_o_width- 1:0] IIRout_p5_re;
wire signed [b6_o_width- 1:0] IIRout_p6_re;
wire signed [b7_o_width- 1:0] IIRout_p7_re;



IIR_Filter_p8 #(
					.coef_width		(coef_width		),
					.b_pow8_width		(b0_width		),
					.ab_pow_width		(a0_width		),
					.temp_var_width		(b0_i_width		),
					.data_out_width		(b0_o_width 		)
) inst_iir_p0 (
                                        .clk                    (clk            	    ),
                                        .rstn                   (rstn                   ),
                                        .en                     (en                     ),
                                        .dinp0                  (IIRin_p7               ),      // x(8n+16)
                                        .dinp1                  (IIRin_p6               ),      // x(8n+15)
                                        .dinp2                  (IIRin_p5               ),      // x(8n+14)
                                        .dinp3                  (IIRin_p4               ),      // x(8n+13)
                                        .dinp4                  (IIRin_p3               ),      // x(8n+12)
                                        .dinp5                  (IIRin_p2               ),      // x(8n+11)
                                        .dinp6                  (IIRin_p1               ),      // x(8n+10)
                                        .dinp7                  (IIRin_p0               ),      // x(8n+9)
                                        .a_re                   (a_re                   ),
                                        .ab_re                  (ab_re                  ),
                                        .abb_re                 (abb_re                 ),
                                        .ab_pow3_re             (ab_pow3_re             ),
                                        .ab_pow4_re             (ab_pow4_re             ),
                                        .ab_pow5_re             (ab_pow5_re             ),
                                        .ab_pow6_re             (ab_pow6_re             ),
                                        .ab_pow7_re             (ab_pow7_re             ),
                                        .b_pow8_re              (b_pow8_re              ),
                                        .dout_re        	    (IIRout_p0_re   	    )       // Re(y(8n-8))
);

IIR_Filter_p1 #(
					.coef_width		(coef_width		),
					.a_width		(a1_width		),
					.b_width		(b1_width		),
					.cascade_in_width	(b1_i_width	 	),
					.data_out_width		(b1_o_width		)
) inst_iir_p1(
                                        .clk                    (clk            	),
                                        .rstn                   (rstn               ),
                                        .en                     (en                 ),
                                        .din_re                 (IIRin_p0_r2    	),      // x(8n-7)
                                        .dout_r1_re             (IIRout_p0_re   	),      // Re(y(8n-8))
                                        .a_re                   (a_re               ),
                                        .b_re                   (b_re               ),
                                        .dout_re        	    (IIRout_p1_re   	)       // Re(y(8n-23))
);
IIR_Filter_p1 #(
					.coef_width		(coef_width		),
					.a_width		(a2_width		),
					.b_width		(b2_width		),
					.cascade_in_width	(b2_i_width	 	),
					.data_out_width		(b2_o_width		)
) inst_iir_p2 (
                                        .clk                    (clk            	),
                                        .rstn                   (rstn               ),
                                        .en                     (en                 ),
                                        .din_re                 (IIRin_p1_r4  		),      // x(8n-22)
                                        .dout_r1_re             (IIRout_p1_re   	),      // Re(y(8n-23))
                                        .a_re                   (a_re               ),
                                        .b_re                   (b_re               ),
                                        .dout_re        	    (IIRout_p2_re   	)       // Re(y(8n-38))
);
IIR_Filter_p1 #(
					.coef_width		(coef_width		),
					.a_width		(a3_width		),
					.b_width		(b3_width		),
					.cascade_in_width	(b3_i_width	 	),
					.data_out_width		(b3_o_width		)
) inst_iir_p3 (
                                        .clk                    (clk            	),
                                        .rstn                   (rstn               ),
                                        .en                     (en                 ),
                                        .din_re                 (IIRin_p2_r6  		),      // x(8n-37)
                                        .dout_r1_re             (IIRout_p2_re   	),      // Re(y(8n-38))
                                        .a_re                   (a_re               ),
                                        .b_re                   (b_re               ),
                                        .dout_re        	    (IIRout_p3_re       )       // Re(y(8n-53))
);
IIR_Filter_p1 #(
					.coef_width		(coef_width		),
					.a_width		(a4_width		),
					.b_width		(b4_width		),
					.cascade_in_width	(b4_i_width	 	),
					.data_out_width		(b4_o_width		)
) inst_iir_p4 (
                                        .clk                    (clk            	),
                                        .rstn                   (rstn               ),
                                        .en                     (en                 ),
                                        .din_re                 (IIRin_p3_r8  		),      // x(8n-52)
                                        .dout_r1_re             (IIRout_p3_re   	),      // Re(y(8n-53))
                                        .a_re                   (a_re               ),
                                        .b_re                   (b_re               ),
                                        .dout_re        	    (IIRout_p4_re   	)       // Re(y(8n-68))
);
IIR_Filter_p1 #(
					.coef_width		(coef_width		),
					.a_width		(a5_width		),
					.b_width		(b5_width		),
					.cascade_in_width	(b5_i_width	 	),
					.data_out_width		(b5_o_width		) 
) inst_iir_p5 (
                                        .clk                    (clk            	),
                                        .rstn                   (rstn               ),
                                        .en                     (en                 ),
                                        .din_re                 (IIRin_p4_r10		),      // x(8n-67)
                                        .dout_r1_re             (IIRout_p4_re   	),      // Re(y(8n-68))
                                        .a_re                   (a_re               ),
                                        .b_re                   (b_re               ),
                                        .dout_re        	    (IIRout_p5_re   	)       // Re(y(8n-83))
);
IIR_Filter_p1 #(
					.coef_width		(coef_width		),
					.a_width		(a6_width		),
					.b_width		(b6_width		),
					.cascade_in_width	(b6_i_width	 	),
					.data_out_width		(b6_o_width		) 
) inst_iir_p6 (
                                        .clk                    (clk            	),
                                        .rstn                   (rstn               ),
                                        .en                     (en                 ),
                                        .din_re                 (IIRin_p5_r12 		),      // x(8n-82)
                                        .dout_r1_re             (IIRout_p5_re   	),      // Re(y(8n-83))
                                        .a_re                   (a_re               ),
                                        .b_re                   (b_re               ),
                                        .dout_re        	    (IIRout_p6_re   	)       // Re(y(8n-98))
);
IIR_Filter_p1 #(
					.coef_width		(coef_width		),
					.a_width		(a7_width		),
					.b_width		(b7_width		),
					.cascade_in_width	(b7_i_width	 	),
					.data_out_width		(b7_o_width		)
) inst_iir_p7 (
                                        .clk                    (clk            	),
                                        .rstn                   (rstn               ),
                                        .en                     (en                 ),
                                        .din_re                 (IIRin_p6_r14 		),      // x(8n-97)
                                        .dout_r1_re             (IIRout_p6_re   	),      // Re(y(8n-98))
                                        .a_re                   (a_re               ),
                                        .b_re                   (b_re               ),
                                        .dout_re        	    (IIRout_p7_re   	)       // Re(y(8n-113))
);  


assign IIRout_p0 = IIRout_p0_re[b0_o_width-1 : b0_o_width-data_out_width];      // y(8n-8)
assign IIRout_p1 = IIRout_p1_re[b1_o_width-1 : b1_o_width-data_out_width];      // y(8n-23)
assign IIRout_p2 = IIRout_p2_re[b2_o_width-1 : b2_o_width-data_out_width];      // y(8n-38)
assign IIRout_p3 = IIRout_p3_re[b3_o_width-1 : b3_o_width-data_out_width];      // y(8n-53)
assign IIRout_p4 = IIRout_p4_re[b4_o_width-1 : b4_o_width-data_out_width];      // y(8n-68)
assign IIRout_p5 = IIRout_p5_re[b5_o_width-1 : b5_o_width-data_out_width];      // y(8n-83)
assign IIRout_p6 = IIRout_p6_re[b6_o_width-1 : b6_o_width-data_out_width];      // y(8n-98)
assign IIRout_p7 = IIRout_p7_re[b7_o_width-1 : b7_o_width-data_out_width];      // y(8n-113)

endmodule