+++ /dev/null
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// Phy_sim.v ////
-//// ////
-//// This file is part of the Ethernet IP core project ////
-//// http://www.opencores.org/projects.cgi/web/ethernet_tri_mode/////
-//// ////
-//// Author(s): ////
-//// - Jon Gao (gaojon@yahoo.com) ////
-//// ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// Copyright (C) 2001 Authors ////
-//// ////
-//// 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 ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//
-// CVS Revision History
-//
-// $Log: Phy_sim.v,v $
-// Revision 1.3 2006/11/17 17:53:07 maverickist
-// no message
-//
-// Revision 1.2 2006/01/19 14:07:50 maverickist
-// verification is complete.
-//
-// Revision 1.1.1.1 2005/12/13 01:51:44 Administrator
-// no message
-//
-
-`timescale 1ns/100ps
-
-module Phy_sim (input Gtx_clk ,//used only in GMII mode
- output Rx_clk ,
- output Tx_clk ,//used only in MII mode
- input Tx_er ,
- input Tx_en ,
- input [7:0] Txd ,
- output Rx_er ,
- output Rx_dv ,
- output [7:0] Rxd ,
- output Crs ,
- output Col ,
- input [2:0] Speed
- );
-
- // ////////////////////////////////////////////////////////////////////
- // this file used to simulate Phy.
- // generate clk and loop the Tx data to Rx data
- // full duplex mode can be verified on loop mode.
- // ////////////////////////////////////////////////////////////////////
- // ////////////////////////////////////////////////////////////////////
- // internal signals
- // ////////////////////////////////////////////////////////////////////
- reg Clk_25m ;//used for 100 Mbps mode
- reg Clk_2_5m ;//used for 10 Mbps mode
- //wire Rx_clk ;
- //wire Tx_clk ;//used only in MII mode
- // ////////////////////////////////////////////////////////////////////
- always
- begin
- #20 Clk_25m=0;
- #20 Clk_25m=1;
- end
-
- always
- begin
- #200 Clk_2_5m=0;
- #200 Clk_2_5m=1;
- end
-
- assign Rx_clk=Speed[2]?Gtx_clk:Speed[1]?Clk_25m:Speed[0]?Clk_2_5m:0;
- assign Tx_clk=Speed[2]?Gtx_clk:Speed[1]?Clk_25m:Speed[0]?Clk_2_5m:0;
-
- assign Rx_dv =Tx_en ;
- assign Rxd =Txd ;
- assign Rx_er =0 ;
- assign Crs =Tx_en ;
- assign Col =0 ;
-
-endmodule // Phy_sim