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[/] [openrisc/] [trunk/] [orpsocv2/] [boards/] [xilinx/] [ml501/] [rtl/] [verilog/] [xilinx_ddr2/] [ddr2_idelay_ctrl.v] - Rev 412

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//*****************************************************************************
// DISCLAIMER OF LIABILITY
//
// This file contains proprietary and confidential information of
// Xilinx, Inc. ("Xilinx"), that is distributed under a license
// from Xilinx, and may be used, copied and/or disclosed only
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//
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//
// Copyright 2006, 2007, 2008 Xilinx, Inc.
// All rights reserved.
//
// This disclaimer and copyright notice must be retained as part
// of this file at all times.
//*****************************************************************************
//   ____  ____
//  /   /\/   /
// /___/  \  /    Vendor: Xilinx
// \   \   \/     Version: 3.0
//  \   \         Application: MIG
//  /   /         Filename: ddr2_idelay_ctrl.v
// /___/   /\     Date Last Modified: $Date: 2008/12/23 14:26:00 $
// \   \  /  \    Date Created: Wed Aug 16 2006
//  \___\/\___\
//
//Device: Virtex-5
//Design Name: DDR2
//Purpose:
//   This module instantiates the IDELAYCTRL primitive of the Virtex-5 device
//   which continuously calibrates the IDELAY elements in the region in case of
//   varying operating conditions. It takes a 200MHz clock as an input
//Reference:
//Revision History:
//   Rev 1.1 - Parameter IODELAY_GRP added and constraint IODELAY_GROUP added
//             on IOELAYCTRL primitive. Generate logic on IDELAYCTRL removed
//             since tools will replicate idelactrl primitives.PK. 11/27/08
//*****************************************************************************
 
`timescale 1ns/1ps
 
module ddr2_idelay_ctrl #
  (
   // Following parameters are for 72-bit RDIMM design (for ML561 Reference
   // board design). Actual values may be different. Actual parameters values
   // are passed from design top module ddr2_mig module. Please refer to
   // the ddr2_mig module for actual values.
   parameter IODELAY_GRP     = "IODELAY_MIG"
   )
 
  (
   input  clk200,
   input  rst200,
   output idelay_ctrl_rdy
   );
 
  (* IODELAY_GROUP = IODELAY_GRP *) IDELAYCTRL u_idelayctrl
    (
     .RDY(idelay_ctrl_rdy),
     .REFCLK(clk200),
     .RST(rst200)
     );
 
endmodule
 

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