ddr_cntl_a_glbl.v

arm控制FPGA的DDR测试代码

//////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2005 Xilinx, Inc.
// This design is confidential and proprietary of Xilinx, All Rights Reserved.
///////////////////////////////////////////////////////////////////////////////
//   ____  ____
//  /   /\/   /
// /___/  \  / Vendor: Xilinx
// \   \   \/ Version: 1.6
//  \   \    Application : MIG
//  /   /    Filename: glbl.v
// /___/   /\ Date Last Modified:  Tue Jul 11 2006
// \   \  /  \ Date Created: Mon May 2 2005
//  \___\/\___\
// Device: Spartan-3/3e
// Design Name: DDR1_S3/S3e
// Description: 
///////////////////////////////////////////////////////////////////////////////

// $Header: \projects/mig1.x/mig1.5/tool/mig 1.5_b0.21/data/dlib/spartan3/DDR SDRAM/verilog/rtl/glbl.v,v 1.3 2006/07/11 12:24:06 venkat Exp $

`timescale  1 ps / 1 ps

module glbl (GSR,
             GTS,
             PRLD);
             
    output GSR, GTS, PRLD; 

    parameter ROC_WIDTH = 100000;
    parameter TOC_WIDTH = 0;

    wire GSR;
    wire GTS;
    wire PRLD;

    reg GSR_int;
    reg GTS_int;
    reg PRLD_int;

    assign (weak1, weak0) GSR = GSR_int;
    assign (weak1, weak0) GTS = GTS_int;
    assign (weak1, weak0) PRLD = PRLD_int;

    initial begin
	GSR_int = 1'b1;
	PRLD_int = 1'b1;
	#(ROC_WIDTH)
	GSR_int = 1'b0;
	PRLD_int = 1'b0;
    end

    initial begin
	GTS_int = 1'b1;
	#(TOC_WIDTH)
	GTS_int = 1'b0;
    end

endmodule