                Core name: Xilinx LogiCORE Fast Fourier Transform
                Version: 7.1
                Release Date: January 11 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. Other Information
8. Core Release History
9. 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 Fast Fourier Transform v7.1
solution. For the latest core updates, see the product page at:

   http://www.xilinx.com/products/ipcenter/FFT.htm


2. NEW FEATURES

- ISE 13.4 software support
- ISE 13.3 software support
- ISE 13.2 software support
- Support for Artix-7 with ISE 13.2
- ISE 13.1 software support


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

Zynq-7000*

Virtex-7 XC XT/HT/T
Virtex-7 -2L XC XT/T

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

Kintex-7 XC
Kintex-7 -2L XC

Artix-7 XC

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

  - Illegal configurations of Spartan-6 RAMB8BWER Block RAM primitive.
    - Symptom: Map error due to incorrect configurations of Spartan-6 Block RAM primitives.
    - Workaround: None.
    - Version fixed: 7.1
    - CR552350


5. KNOWN ISSUES

The following are known issues for v7.1 of this core at time of release:

  - None

The most recent information, including known issues, workarounds, and
resolutions for this version is provided in the IP Release Notes 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. OTHER INFORMATION

- None


8. CORE RELEASE HISTORY

Date        By            Version      Description
================================================================================
01/11/2012  Xilinx, Inc.  7.1          ISE 13.4 support
10/19/2011  Xilinx, Inc.  7.1         ISE 13.3 support
06/22/2011  Xilinx, Inc.  7.1         ISE 13.2 support, Artix-7 support
03/01/2011  Xilinx, Inc.  7.1         ISE 13.1 support, Virtex-7 and Kintex-7 support
04/19/2010  Xilinx, Inc.  7.1         ISE 12.1 support. Bugfixes.
12/02/2009  Xilinx, Inc.  7.0         ISE 11.4 support, Spartan-6L support.
09/16/2009  Xilinx, Inc.  7.0         ISE 11.3 support, Virtex-6L support.
06/24/2009  Xilinx, Inc.  7.0         ISE 11.2 support, Virtex-6/Spartan-6 support.
09/19/2008  Xilinx, Inc.  6.0         ISE 10.1 support. Features added. Bugfixes.
10/10/2007  Xilinx, Inc.  5.0         ISE 9.2i support. Features added. Bugfixes.
================================================================================


9. LEGAL DISCLAIMER

(c) Copyright 2000 - 2011 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

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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,
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