ddr2_32mx32_tap_dly.v

Xilinx DDR2存储器接口调试代码

///////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2005-2007 Xilinx, Inc.
// All Rights Reserved
///////////////////////////////////////////////////////////////////////////////
//   ____  ____
//  /   /\/   /
// /___/  \  /   Vendor			: Xilinx
// \   \   \/    Version		: $Name: i+IP+131489 $
//  \   \        Application		: MIG
//  /   /        Filename		: ddr2_32Mx32_tap_dly.v
// /___/   /\    Date Last Modified	: $Date: 2007/09/21 15:23:18 $
// \   \  /  \   Date Created		: Mon May 2 2005
//  \___\/\___\
// Device	: Spartan-3/3A/3A-DSP
// Design Name	: DDR2 SDRAM
// Purpose	: Internal dqs delay structure for ddr sdram controller
///////////////////////////////////////////////////////////////////////////////

  `timescale 1ns/100ps
module ddr2_32Mx32_tap_dly
  (
   input         clk,
   input         reset,
   input         tapin,
   output [31:0] flop2
   );

   wire [31:0]   tap/* synthesis syn_keep=1 */;
   wire [31:0]   flop1/* synthesis syn_keep=1 */;
   wire          high;
   reg		 reset_r;
  
   always @( posedge clk )
     reset_r <= reset;

   assign        high = 1'b1;


   LUT4 #
     (
      .INIT (16'h0080)
      )
     l0  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tapin), 
	 .O(tap[0])
	 );

   LUT4 #
     (
      .INIT (16'h4000)
      )
     l1  
       ( 
	 .I0(tap[0]), 
	 .I1(high), 
	 .I2(high), 
	 .I3(high), 
	 .O(tap[1])
	 );

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l2  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[1]), 
	 .O(tap[2])
	 );

   LUT4 #
     (
      .INIT (16'h0800)
      )
     l3 
       (
	.I0(high), 
	.I1(high), 
	.I2(tap[2]), 
	.I3(high), 
	.O(tap[3])
	);

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l4  
       ( .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[3]), 
	 .O(tap[4])
	 );

   LUT4 #
     (
      .INIT (16'h0800)
      )
     l5 
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(tap[4]), 
	 .I3(high), 
	 .O(tap[5])
	 );

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l6 
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[5]), 
	 .O(tap[6])
	 );

   LUT4 #
     (
      .INIT (16'h4000)
      )
     l7 
       (
	.I0(tap[6]), 
	.I1(high), 
	.I2(high), 
	.I3(high), 
	.O(tap[7])
	);

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l8 
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[7]), 
	 .O(tap[8])
	 );

   LUT4 #
     (
      .INIT (16'h4000)
      )
     l9 
       ( 
	 .I0(tap[8]), 
	 .I1(high), 
	 .I2(high), 
	 .I3(high), 
	 .O(tap[9])
	 );

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l10 
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[9]), 
	 .O(tap[10])
	 );

   LUT4 #
     (
      .INIT (16'h0800)
      )
     l11
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(tap[10]), 
	 .I3(high), 
	 .O(tap[11])
	 );

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l12  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[11]), 
	 .O(tap[12])
	 );

   LUT4 #
     (
      .INIT (16'h0800)
      )
     l13  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(tap[12]), 
	 .I3(high), 
	 .O(tap[13])
	 );

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l14
       (
	.I0(high), 
	.I1(high), 
	.I2(high), 
	.I3(tap[13]), 
	.O(tap[14])
	);

   LUT4 #
     (
      .INIT (16'h4000)
      )
     l15  
       ( 
	 .I0(tap[14]), 
	 .I1(high), 
	 .I2(high), 
	 .I3(high), 
	 .O(tap[15])
	 );

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l16  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[15]), 
	 .O(tap[16])
	 );

   LUT4 #
     (
      .INIT (16'h0800)
      )
     l17  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(tap[16]), 
	 .I3(high), 
	 .O(tap[17])
	 );

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l18  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[17]), 
	 .O(tap[18])
	 );

   LUT4 #
     (
      .INIT (16'h0800)
      )
     l19
       (
	.I0(high), 
	.I1(high), 
	.I2(tap[18]), 
	.I3(high), 
	.O(tap[19])
	);

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l20  
       (
	.I0(high), 
	.I1(high), 
	.I2(high), 
	.I3(tap[19]), 
	.O(tap[20])
	);

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l21  
       (
	.I0(high), 
	.I1(high), 
	.I2(high), 
	.I3(tap[20]), 
	.O(tap[21])
	);

   LUT4 #
     (
      .INIT (16'h4000)
      )
     l22  
       ( 
	 .I0(tap[21]), 
	 .I1(high), 
	 .I2(high), 
	 .I3(high), 
	 .O(tap[22])
	 );

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l23  
       (
	.I0(high), 
	.I1(high), 
	.I2(high), 
	.I3(tap[22]), 
	.O(tap[23])
	);
   
   LUT4 #
     (
      .INIT (16'h0800)
      )
     l24  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(tap[23]), 
	 .I3(high), 
	 .O(tap[24])
	 );

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l25  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[24]), 
	 .O(tap[25])
	 );

   LUT4 #
     (
      .INIT (16'h0800)
      )
     l26  
       (
	.I0(high), 
	.I1(high), 
	.I2(tap[25]), 
	.I3(high), 
	.O(tap[26])
	);

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l27  
       (
	.I0(high), 
	.I1(high), 
	.I2(high), 
	.I3(tap[26]), 
	.O(tap[27])
	);

   LUT4 #
     (
      .INIT (16'h4000)
      )
     l28  
       (
	.I0(tap[27]), 
	.I1(high), 
	.I2(high), 
	.I3(high), 
	.O(tap[28])
	);

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l29  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[28]), 
	 .O(tap[29])
	 );

   LUT4 #
     (
      .INIT (16'h4000)
      )
     l30  
       (
	.I0(tap[29]), 
	.I1(high), 
	.I2(high), 
	.I3(high), 
	.O(tap[30])
	);

   LUT4 #
     (
      .INIT (16'h0080)
      )
     l31  
       ( 
	 .I0(high), 
	 .I1(high), 
	 .I2(high), 
	 .I3(tap[30]), 
	 .O(tap[31])
	 );

  genvar tap_i;
   generate for(tap_i = 0; tap_i < 32;  tap_i = tap_i + 1) begin: gen_tap1
      FDR r 
	( 
	 .Q (flop1[tap_i]),
	 .C (clk), 
	 .D (tap[tap_i]), 
	 .R (reset_r)
	 );
   end
   endgenerate

   genvar tap1_i;
   generate for(tap1_i = 0; tap1_i < 31;  tap1_i = tap1_i + 1) begin: gen_tap2
      FDR u  
	( 
	 .Q (flop2[tap1_i]),
	 .C (clk), 
	 .D (flop1[tap1_i] ~^ flop1[tap1_i + 1]),
	 .R (reset_r)
	 );
   end
   endgenerate

   FDR u31  
     ( 
      .Q (flop2[31]),
      .C (clk),
      .D (flop1[31]), 
      .R (reset_r)
      );

endmodule