Subversion Repositories dma_axi

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

////                                                             ////

////  Author: Eyal Hochberg                                      ////

////          eyal@provartec.com                                 ////

////                                                             ////

////  Downloaded from: http://www.opencores.org                  ////

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

////                                                             ////

//// Copyright (C) 2010 Provartec LTD                            ////

//// www.provartec.com                                           ////

//// info@provartec.com                                          ////

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

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

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

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//// 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.////

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

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

//// details. http://www.gnu.org/licenses/lgpl.html              ////

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

//---------------------------------------------------------

//-- File generated by RobustVerilog parser

//-- Version: 1.0

//-- Invoked Fri Mar 25 23:34:53 2011

//--

//-- Source file: dma_ch_outs.v

//---------------------------------------------------------

module dma_axi32_core0_ch_outs(clk,reset,cmd,clr,outs_max,outs,outs_empty,stall,timeout);

   input                    clk;

   input             reset;

   input             cmd;

   input             clr;

   input [`OUT_BITS-1:0]    outs_max;

   output [`OUT_BITS-1:0]   outs;

   output             outs_empty;

   output             stall;

   output             timeout;

   reg [`OUT_BITS-1:0]         outs;

   wire [`OUT_BITS-1:0]     outs_pre;

   reg                 stall;

   reg [`TIMEOUT_BITS-1:0]  counter;

   assign             outs_empty = outs == 'd0;

   assign             outs_pre = outs + cmd - clr;

   always @(posedge clk or posedge reset)

     if (reset)

       outs <= #1 'd0;

     else if (cmd | clr)

       outs <= #1 outs_pre;

   always @(posedge clk or posedge reset)

     if (reset)

       stall <= #1 1'b0;

     else if (|outs_max)

       stall <= #1 outs >= outs_max;

   assign             timeout = (counter == 'd0);

   always @(posedge clk or posedge reset)

     if (reset)

       counter <= #1 {`TIMEOUT_BITS{1'b1}};

     else if (clr)

       counter <= #1 {`TIMEOUT_BITS{1'b1}};

     else if (|outs)

       counter <= #1 counter - 1'b1;

endmodule