                                      

                    Core Name: Xilinx 1-Gigabit Ethernet MAC
                    Version: 8.4 
                    Release Date: March 24, 2008


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

This document contains the following sections: 

1. Introduction
2. New Features
3. Resolved Issues
4. Known Issues 
5. Technical Support
6. Other Information
7. Core Release History
 
================================================================================
 
1. INTRODUCTION

For the most recent updates to the IP installation instructions for this core,
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 
1-Gigabit Ethernet MAC v8.4 solution. For the latest core updates,
see the product page at:
 
   www.xilinx.com/products/ipcenter/GMAC.htm

2. NEW FEATURES  
 
   - ISE 10.1i software support
   - Virtex-5 FXT support
   - VCS simulator support
   - Added support for control frames >= 64 bytes

 
3. RESOLVED ISSUES 
 
   - Incorrect data can be read out of the RX LL FIFO if rd_dst_rdy_n has been de-asserted
      - See AR #29660
      - A pipelined version of the frame_in_fifo signal is now used to ensure valid frame data
 
4. KNOWN ISSUES 
   
   The following are known issues for v8.4 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 release notes Answer Record
  for the ISE 10.1i IP Update at 

     <<<http://www.xilinx.com/support/answers/29767.htm>>>


5. 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.


6. OTHER INFORMATION
   

7. CORE RELEASE HISTORY 

Date     By            Version   Change Description
========================================================================
03/2008  Xilinx, Inc.  8.4       Release for ISE 10.1i
08/2007  Xilinx, Inc.  8.3       Release for ISE 9.2i
04/2007  Xilinx, Inc.  8.2 Rev 1 Spartan-3A DSP support
02/2007  Xilinx, Inc.  8.2       Release for ISE 9.1i
09/2006  Xilinx, Inc.  8.1       Release for ISE 8.2i
07/2006  Xilinx, Inc.  8.0       Release for ISE 8.2i
01/2006  Xilinx, Inc.  7.0       Release for ISE 8.1i 
04/2005  Xilinx, Inc.  6.0       Release for ISE 7.1i
09/2004  Xilinx, Inc.  5.0       Release for ISE 6.3i 
========================================================================


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