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                    Core Name: Xilinx LogiCORE FIFO Generator
                    Version: 8.4
                    Release: 13.4
                    Release Date: January 18, 2012


================================================================================

This document contains the following sections: 

1. Introduction
2. New Features
3. Supported Devices
4. Resolved Issues
5. Known Issues 
6. Technical Support
7. Core Release History
8. Legal Disclaimer
 
================================================================================
 
1. INTRODUCTION

For installation instructions for this release, please go to:

   http://www.xilinx.com/ipcenter/coregen/ip_update_install_instructions.htm

For system requirements:

   http://www.xilinx.com/ipcenter/coregen/ip_update_system_requirements.htm

This file contains release notes for the Xilinx LogiCORE IP FIFO Generator v8.4
solution. For the latest core updates, see the product page at:
 
   http://www.xilinx.com/products/ipcenter/FIFO_Generator.htm


2. NEW FEATURES  
 
   - ISE 13.4 software support
   - Packet FIFO feature addition

3. SUPPORTED DEVICES

The following device families are supported by the core for this release.

Virtex-7
Virtex-7 -2L
Virtex-7 -2G
Virtex-7 XT

Kintex-7
Kintex-7 -2L

Artix-7

Zynq-7000*

Virtex-6 XC CXT/LXT/SXT/HXT
Virtex-6 XQ LXT/SXT
Virtex-6 -1L XC LXT/SXT 
Virtex-6 -1L XQ LXT/SXT 

Spartan-6 XC LX/LXT 
Spartan-6 XA LX/LXT 
Spartan-6 XQ LX/LXT 
Spartan-6 -1L XC LX
Spartan-6 -1L XQ LX

Virtex-5 XC LX/LXT/SXT/TXT/FXT
Virtex-5 XQ LX/LXT/SXT/FXT

Virtex-4 XC LX/SX/FX
Virtex-4 XQ LX/SX/FX
Virtex-4 XQR LX/SX/FX

Spartan-3 XC
Spartan-3 XA
Spartan-3A XC 3A / 3A DSP / 3AN
Spartan-3A XA 3A / 3A DSP
Spartan-3E XC
Spartan-3E XA

*To access these devices in the ISE Design Suite, contact your Xilinx FAE.

4. RESOLVED ISSUES 


5. KNOWN ISSUES 

The following are known issues for v8.4 of this core at the time of release:

   - In the FIFO Generator GUI, after importing an XCO file (Independent clock, distributed memory configuration)
     into a Virtex-4 CORE Generator project, if the FIFO type is changed to "Independent Clocks, Built-in FIFO" in page 1, 
     page 2 does not correctly offer the Read Clock Frequency and Write Clock Frequency options as it should.
     - CR 467240
     - AR 31379

   - When using Common Clock Built-in FIFO configuration with asynchronous reset for Virtex-6 FPGA,
     correct behavior of the FIFO status flags cannot be guaranteed after the first write.

     Workaround: To work around this issue, synchronize the negative edge of reset to RDCLK/WRCLK.
     For more information and additional workaround see Answer Record 41099.

   - The FIFO Generator GUI is allowing the user to select the FULL Threshold Assert Value lesser than EMPTY
     Threshold Assert Value for AXI FIFO.
     - CR 613264

     Workaround: To work around this issue, select FULL Threshold Assert Value greater than EMPTY Threshold
     Assert Value


The most recent information, including known issues, workarounds, and
resolutions for this version is provided in the IP Release Notes User Guide
located at 

   www.xilinx.com/support/documentation/user_guides/xtp025.pdf 


6. TECHNICAL SUPPORT 

To obtain technical support, create a WebCase at www.xilinx.com/support.
Questions are routed to a team with expertise using this product.  
  
Xilinx provides technical support for use of this product when used
according to the guidelines described in the core documentation, and
cannot guarantee timing, functionality, or support of this product for
designs that do not follow specified guidelines.


7. CORE RELEASE HISTORY 

Date        By            Version      Description
================================================================================
01/18/2012  Xilinx, Inc.  8.4          ISE 13.4 support and Packet FIFO feature addition
10/19/2011  Xilinx, Inc.  8.3          ISE 13.3 support and QVirtex-6L device support
06/22/2011  Xilinx, Inc.  8.2          ISE 13.2 support and Kintex-7L, Virtex-7L, Artix-7* and Zynq-7000* device support
03/01/2011  Xilinx, Inc.  8.1          ISE 13.1 support and Virtex-7 and Kintex-7 device support; Wiring Logic and Register Slice Support
10/29/2010  Xilinx, Inc.  7.3          ISE 13.0.2 support
09/21/2010  Xilinx, Inc.  7.2          ISE 12.3 support; AXI4 Support
07/30/2010  Xilinx, Inc.  7.1          ISE 13.0.1 support
06/18/2010  Xilinx, Inc.  6.2          ISE 12.2 support
04/19/2010  Xilinx, Inc.  6.1          ISE 12.1 support
12/02/2009  Xilinx, Inc.  5.3 rev 1    ISE 11.4 support; Spartan-6 Low Power and Automotive Spartan-6 Device support
09/16/2009  Xilinx, Inc.  5.3          Update to add 11.3; Virtex-6 Low Power and Virtex-6 HXT Device support
06/24/2009  Xilinx, Inc.  5.2          Update to add 11.2 and Virtex-6 CXT device support
04/24/2009  Xilinx, Inc.  5.1          Update to add 11.1 and Virtex-6 and Spartan-6 device support
09/19/2008  Xilinx, Inc.  4.4          Update to add 10.1 SP3 and Virtex-5 TXT device support and miscellaneous bug fixes
03/24/2008  Xilinx, Inc.  4.3          Update to add 10.1 support and miscellaneous bug fixes
10/03/2007  Xilinx, Inc.  4.2          Support for FWFT for Block RAM and Distributed RAM Common Clock FIFOs
08/08/2007  Xilinx, Inc.  4.1          Update to add 9.2i support; Revised to v4.1; ECC support for block RAM FIFO
04/02/2007  Xilinx, Inc.  3.3          Update to add 9.1i support; Revised to v3.3; Spartan-3A and Spartan-3A DSP support; ECC support
09/21/2006  Xilinx, Inc.  3.2          Revised to v3.2; Spartan-3 and Virtex-4 automotive device support
07/13/2006  Xilinx, Inc.  3.1          Update to add 8.2i support; Revised to v3.1; Virtex-5 support
01/11/2006  Xilinx, Inc.  2.3          Update to add 8.1i support; Revised to v2.3
08/31/2005  Xilinx, Inc.  2.2          Update to add 7.1i SP4 support; Revised to v2.2
04/28/2005  Xilinx, Inc.  2.1          Update to add 7.1i SP1 support; Revised to v2.1
11/04/2004  Xilinx, Inc.  2.0          Update to add 6.3i support; Revised to v2.0
05/21/2004  Xilinx, Inc.  1.1          Revised to v1.1; Virtex-4 support
04/23/2004  Xilinx, Inc.  1.0          Update to add 6.2i support; First release
================================================================================

8. Legal Disclaimer

(c) Copyright 2002 - 2012 Xilinx, Inc. All rights reserved.

This file contains confidential and proprietary information
of Xilinx, Inc. and is protected under U.S. and
international copyright and other intellectual property
laws.

DISCLAIMER
This disclaimer is not a license and does not grant any
rights to the materials distributed herewith. Except as
otherwise provided in a valid license issued to you by
Xilinx, and to the maximum extent permitted by applicable
law: (1) THESE MATERIALS ARE MADE AVAILABLE "AS IS" AND
WITH ALL FAULTS, AND XILINX HEREBY DISCLAIMS ALL WARRANTIES
AND CONDITIONS, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING
BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, NON-
INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE; and
(2) Xilinx shall not be liable (whether in contract or tort,
including negligence, or under any other theory of
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related to, arising under or in connection with these
materials, including for any direct, or any indirect,
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(including loss of data, profits, goodwill, or any type of
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possibility of the same.

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safe, or for use in any application requiring fail-safe
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systems, Class III medical devices, nuclear facilities,
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THIS COPYRIGHT NOTICE AND DISCLAIMER MUST BE RETAINED AS
PART OF THIS FILE AT ALL TIMES.

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