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//// rxStatusMonitor.v                                            ////

////                                                              ////

//// This file is part of the usbhostslave opencores effort.

//// <http://www.opencores.org/cores//>                           ////

////                                                              ////

//// Module Description:                                          ////

//// 

////                                                              ////

//// To Do:                                                       ////

//// 

////                                                              ////

//// Author(s):                                                   ////

//// - Steve Fielding, sfielding@base2designs.com                 ////

////                                                              ////

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//// Copyright (C) 2004 Steve Fielding and OPENCORES.ORG          ////

////                                                              ////

//// This source file may be used and distributed without         ////

//// restriction provided that this copyright statement is not    ////

//// removed from the file and that any derivative work contains  ////

//// the original copyright notice and the associated disclaimer. ////

////                                                              ////

//// This source file is free software; you can redistribute it   ////

//// and/or modify it under the terms of the GNU Lesser General   ////

//// Public License as published by the Free Software Foundation; ////

//// either version 2.1 of the License, or (at your option) any   ////

//// later version.                                               ////

////                                                              ////

//// This source is distributed in the hope that it will be       ////

//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////

//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////

//// PURPOSE. See the GNU Lesser General Public License for more  ////

//// details.                                                     ////

////                                                              ////

//// You should have received a copy of the GNU Lesser General    ////

//// Public License along with this source; if not, download it   ////

//// from <http://www.opencores.org/lgpl.shtml>                   ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

//

// $Id: rxStatusMonitor.v,v 1.1.1.1 2004-10-11 04:00:53 sfielding Exp $

//

// CVS Revision History

//

// $Log: not supported by cvs2svn $

//

module rxStatusMonitor(connectStateIn, connectStateOut, resumeDetectedIn, connectionEventOut, resumeIntOut, clk, rst);

input [1:0] connectStateIn;

input resumeDetectedIn;

input clk;

input rst;

output connectionEventOut;

output [1:0] connectStateOut;

output resumeIntOut;

wire [1:0] connectStateIn;

wire resumeDetectedIn;

reg connectionEventOut;

reg [1:0] connectStateOut;

reg resumeIntOut;

wire clk;

wire rst;

reg [1:0]oldConnectState;

reg oldResumeDetected;

always @(connectStateIn)

begin

        connectStateOut <= connectStateIn;

end

always @(posedge clk)

begin

        if (rst == 1'b1)

        begin

                oldConnectState <= connectStateIn;

                oldResumeDetected <= resumeDetectedIn;

        end

        else

        begin

                oldConnectState <= connectStateIn;

                oldResumeDetected <= resumeDetectedIn;

                if (oldConnectState != connectStateIn)

                        connectionEventOut <= 1'b1;

                else

                        connectionEventOut <= 1'b0;

                if (resumeDetectedIn == 1'b1 && oldResumeDetected == 1'b0)

                        resumeIntOut <= 1'b1;

                else

                        resumeIntOut <= 1'b0;

        end

end

endmodule