dcm1.v

ise9.1官方的使用手册中配套用的fpga入门代码

////////////////////////////////////////////////////////////////////////////////
// Copyright (c) 1995-2007 Xilinx, Inc.  All rights reserved.
////////////////////////////////////////////////////////////////////////////////
//   ____  ____ 
//  /   /\/   / 
// /___/  \  /    Vendor: Xilinx 
// \   \   \/     Version : 9.1.03i
//  \   \         Application : xaw2verilog
//  /   /         Filename : dcm1.v
// /___/   /\     Timestamp : 05/16/2007 17:15:54
// \   \  /  \ 
//  \___\/\___\ 
//
//Command: xaw2verilog -intstyle C:/examples/wtut_ver/wtut_ver_completed/dcm1.xaw -st dcm1.v
//Design Name: dcm1
//Device: xc3s200-4ft256
//
// Module dcm1
// Generated by Xilinx Architecture Wizard
// Written for synthesis tool: XST
`timescale 1ns / 1ps

module dcm1(CLKIN_IN, 
            RST_IN, 
            CLKFX_OUT, 
            CLKIN_IBUFG_OUT, 
            CLK0_OUT, 
            LOCKED_OUT);

    input CLKIN_IN;
    input RST_IN;
   output CLKFX_OUT;
   output CLKIN_IBUFG_OUT;
   output CLK0_OUT;
   output LOCKED_OUT;
   
   wire CLKFB_IN;
   wire CLKFX_BUF;
   wire CLKIN_IBUFG;
   wire CLK0_BUF;
   wire GND_BIT;
   
   assign GND_BIT = 0;
   assign CLKIN_IBUFG_OUT = CLKIN_IBUFG;
   assign CLK0_OUT = CLKFB_IN;
   BUFG CLKFX_BUFG_INST (.I(CLKFX_BUF), 
                         .O(CLKFX_OUT));
   IBUFG CLKIN_IBUFG_INST (.I(CLKIN_IN), 
                           .O(CLKIN_IBUFG));
   BUFG CLK0_BUFG_INST (.I(CLK0_BUF), 
                        .O(CLKFB_IN));
   // Period Jitter (unit interval) for block DCM_INST = 0.05 UI
   // Period Jitter (Peak-to-Peak) for block DCM_INST = 2.01 ns
   DCM DCM_INST (.CLKFB(CLKFB_IN), 
                 .CLKIN(CLKIN_IBUFG), 
                 .DSSEN(GND_BIT), 
                 .PSCLK(GND_BIT), 
                 .PSEN(GND_BIT), 
                 .PSINCDEC(GND_BIT), 
                 .RST(RST_IN), 
                 .CLKDV(), 
                 .CLKFX(CLKFX_BUF), 
                 .CLKFX180(), 
                 .CLK0(CLK0_BUF), 
                 .CLK2X(), 
                 .CLK2X180(), 
                 .CLK90(), 
                 .CLK180(), 
                 .CLK270(), 
                 .LOCKED(LOCKED_OUT), 
                 .PSDONE(), 
                 .STATUS());
   defparam DCM_INST.CLK_FEEDBACK = "1X";
   defparam DCM_INST.CLKDV_DIVIDE = 2.0;
   defparam DCM_INST.CLKFX_DIVIDE = 25;
   defparam DCM_INST.CLKFX_MULTIPLY = 13;
   defparam DCM_INST.CLKIN_DIVIDE_BY_2 = "FALSE";
   defparam DCM_INST.CLKIN_PERIOD = 20.0;
   defparam DCM_INST.CLKOUT_PHASE_SHIFT = "NONE";
   defparam DCM_INST.DESKEW_ADJUST = "SYSTEM_SYNCHRONOUS";
   defparam DCM_INST.DFS_FREQUENCY_MODE = "LOW";
   defparam DCM_INST.DLL_FREQUENCY_MODE = "LOW";
   defparam DCM_INST.DUTY_CYCLE_CORRECTION = "TRUE";
   defparam DCM_INST.FACTORY_JF = 16'hC080;
   defparam DCM_INST.PHASE_SHIFT = 0;
   defparam DCM_INST.STARTUP_WAIT = "TRUE";
endmodule