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[/] [openrisc/] [trunk/] [orpsocv2/] [rtl/] [verilog/] [include/] [i2c_master_slave_defines.v] - Blame information for rev 584

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1 408 julius
/////////////////////////////////////////////////////////////////////
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////                                                             ////
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////  WISHBONE rev.B2 compliant I2C Master controller defines    ////
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////                                                             ////
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////                                                             ////
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////  Author: Richard Herveille                                  ////
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////          richard@asics.ws                                   ////
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////          www.asics.ws                                       ////
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////                                                             ////
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////  Downloaded from: http://www.opencores.org/projects/i2c/    ////
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////                                                             ////
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/////////////////////////////////////////////////////////////////////
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////                                                             ////
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//// Copyright (C) 2001 Richard Herveille                        ////
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////                    richard@asics.ws                         ////
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////                                                             ////
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//// This source file may be used and distributed without        ////
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//// restriction provided that this copyright statement is not   ////
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//// removed from the file and that any derivative work contains ////
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//// the original copyright notice and the associated disclaimer.////
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////                                                             ////
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////     THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY     ////
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//// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED   ////
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//// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS   ////
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//// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR      ////
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//// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,         ////
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//// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    ////
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//// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE   ////
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//// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR        ////
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//// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF  ////
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//// LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT  ////
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//// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT  ////
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//// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE         ////
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//// POSSIBILITY OF SUCH DAMAGE.                                 ////
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////                                                             ////
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/////////////////////////////////////////////////////////////////////
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//  CVS Log
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//
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//  $Id: i2c_master_defines.v,v 1.3 2001-11-05 11:59:25 rherveille Exp $
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//
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//  $Date: 2001-11-05 11:59:25 $
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//  $Revision: 1.3 $
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//  $Author: rherveille $
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//  $Locker:  $
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//  $State: Exp $
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//
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// Change History:
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//               $Log: not supported by cvs2svn $
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// I2C registers wishbone addresses
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// bitcontroller states
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`define I2C_CMD_NOP   4'b0000
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`define I2C_CMD_START 4'b0001
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`define I2C_CMD_STOP  4'b0010
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`define I2C_CMD_WRITE 4'b0100
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`define I2C_CMD_READ  4'b1000
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`define I2C_SLAVE_CMD_WRITE 2'b01
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`define I2C_SLAVE_CMD_READ 2'b10
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`define I2C_SLAVE_CMD_NOP 2'b00
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