Core Name: Xilinx Virtex 4 Embedded Tri-Mode Ethernet MAC
                    Version: 4.6
                    Release Date: March 24, 2008


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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 Virtex-4 Embedded MAC
solution. For the latest core updates, see the product page at:
 
  http://www.xilinx.com/products/ipcenter/Embedded_TEMAC_Wrapper.htm


2. NEW FEATURES  
 
   - ISE 10.1i software support
   - New 16-bit client example design runs at 2 Gbps

 
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
   - In the simulation scripts, $XILINX has been changed to $env(XILINX) for
     better TCL support.
   - Addresses entered in for UNICAST_PAUSE_ADDRESS in the GUI now are written correctly
     to the wrapper.

 
4. KNOWN ISSUES 
   
  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

   Please refer to the Getting Started Guide for more information
   on how to set up and use the Virtex-4 Embedded MAC wrapper and
   example design.

7. CORE RELEASE HISTORY 

Date       By          Version     Description
=================================================================
3/24/2008  Xilinx, Inc   4.6       Release for ISE 10.1i
8/1/2007   Xilinx, Inc   4.5       Release for ISE 9.2i
3/1/2007   Xilinx, Inc   4.4       Release for ISE 9.1i
9/21/2006  Xilinx, Inc   4.3       Updated hierarchy.
7/13/2006  Xilinx, Inc   4.2
1/18/2006  Xilinx, Inc.  4.1       Release for ISE 8.1i
=================================================================



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