ssn.v

Viertex 2 开发板的接口程序

//     XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"
//     SOLELY FOR USE IN DEVELOPING PROGRAMS AND SOLUTIONS FOR
//     XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE, OR INFORMATION
//     AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION
//     OR STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS
//     IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,
//     AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE
//     FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY
//     WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE
//     IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR
//     REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF
//     INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
//     FOR A PARTICULAR PURPOSE.
//
//     (c) Copyright 2004 Xilinx, Inc.
//     All rights reserved.
//
/*
-------------------------------------------------------------------------------
   Title      : Silicon Serial Number One Wire Interface
   Project    : XUP Virtex-II Pro Development System 
-------------------------------------------------------------------------------
   File       : SSN.v
   Company    : Xilinx, Inc.
   Created    : 2004/08/12
   Last Update: 2004/08/12
   Copyright  : (c) Xilinx Inc, 2004
-------------------------------------------------------------------------------
   Uses       : HEX_2_ASCII.v ONEWIRE_IFACE.v
-------------------------------------------------------------------------------
   Used by    : 
-------------------------------------------------------------------------------
   Description: This module interfaces to the one wire Silicon Serial Number
   				and converts the 48bit hex value to ASCII digits for display
				by the character mode video.

	Conventions:
		All external port signals are UPPER CASE.
		All internal signals are LOWER CASE and are active HIGH.


-------------------------------------------------------------------------------

*/

module SILICON_SERIAL_NUMBER (
pixel_clock,
reset,
SSN_DATA,
sn_1,
sn_2,
sn_3,
sn_4,
sn_5,
sn_6,
sn_7,
sn_8,
sn_9,
sn_10,
sn_11,
sn_12,
sn_data
);

input			pixel_clock;
input			reset;
inout			SSN_DATA;			// one wire interface

output	[7:0]	sn_1;				// Silicon Serial Number as ASCII digits
output	[7:0]	sn_2;
output	[7:0]	sn_3;
output	[7:0]	sn_4;
output	[7:0]	sn_5;
output	[7:0]	sn_6;
output	[7:0]	sn_7;
output	[7:0]	sn_8;
output	[7:0]	sn_9;
output	[7:0]	sn_10;
output	[7:0]	sn_11;
output	[7:0]	sn_12;
output  [47:0]  sn_data;



wire dq = SSN_DATA;
wire [47:0] sn_data;			// Silicon Serial Number as hex data

wire [7:0] one_wire_data;
wire data_valid;
wire crc_ok;

// instantiate the one wire interface
ONEWIRE_IFACE ONEWIRE_IFACE (
pixel_clock,
reset,
dq,
one_wire_data,
data_valid,
crc_ok, 
sn_data);

// convert the hex serial number to ascii
HEX_2_ASCII DIGIT_12(sn_data[47:44],sn_12[7:0]);
HEX_2_ASCII DIGIT_11(sn_data[43:40],sn_11[7:0]);
HEX_2_ASCII DIGIT_10(sn_data[39:36],sn_10[7:0]);
HEX_2_ASCII DIGIT_9(sn_data[35:32],sn_9[7:0]);
HEX_2_ASCII DIGIT_8(sn_data[31:28],sn_8[7:0]);
HEX_2_ASCII DIGIT_7(sn_data[27:24],sn_7[7:0]);
HEX_2_ASCII DIGIT_6(sn_data[23:20],sn_6[7:0]);
HEX_2_ASCII DIGIT_5(sn_data[19:16],sn_5[7:0]);
HEX_2_ASCII DIGIT_4(sn_data[15:12],sn_4[7:0]);
HEX_2_ASCII DIGIT_3(sn_data[11:8],sn_3[7:0]);
HEX_2_ASCII DIGIT_2(sn_data[7:4],sn_2[7:0]);
HEX_2_ASCII DIGIT_1(sn_data[3:0],sn_1[7:0]);

endmodule //SILICON_SERIAL_NUMBER