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           Core name: Xilinx Virtex-6 Integrated Block for PCI Express

           Version: 1.6

           Release Date: September 21, 2010

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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

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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(TM) IP Virtex-6

Integrated Block for PCI Express v1.6 solution. For the latest core updates,

see the product page at:

   http://www.xilinx.com/products/ipcenter/V6_PCI_Express_Block.htm

2. NEW FEATURES

   - ISE 12.3 software support

   - QPro Virtex-6 Hi-Rel device support

   - Enabled ISE Simulator (ISIM) support

3. SUPPORTED DEVICES

- Virtex-6 LXT

- Virtex-6 SXT

- Virtex-6 HXT

- Virtex-6 CXT

- Virtex-6 Lower Power

- QPro Virtex-6 Hi-Rel

4. RESOLVED ISSUES

   - Synplify flow now supported for entire synthesis / implementation

     o CR 531976

     Synplify flow is now supported for complete synthesis and implementation

     process.

   - Added support for QPro Virtex-6 Hi-Rel devices

     o CR 551821

     Support for all QPro Virtex-6 Hi-Rel devices has now been enabled.

   - Added support for ISE Simulator (ISIM)

     o CR 448851

     Support has been enabled for ISE Simulator (ISIM).

   - 8-lane Gen2 product is now supported in the Virtex-6 HXT devices.

     o CR 531975

     Support for 8-lane Gen2 product, in Virtex-6 HXT devices is now available.

   - GTX Production Settings Updated

     o CR 556498

     GTX settings have been updated per Production GTX settings, based on

     PCI Express protocol characterization.

   - GUI support for 8-lane Gen2 configuration

     o CR 563396

     Issue resolved where GUI did not allow generation of an 8-lane Gen2 design

     for an LX365T-3 device and allowed generation of an 8-lane Gen2 design for

     a LX550T-2 device, which is not supported.

   - GUI support for PCIe Block locations for SX315T-FF1156

     o CR 560140

     Issue resolved where the GUI claimed 4 PCIe Block locations available on

     the SX315T-FF1156, whereas this device only has 2 available PCIe Blocks.

   - Use of corename "core" in VHDL design causing implementation failure

     o CR 538681, 569546

     Issue resolved where use of corename "core" for a VHDL design caused

     implementation failures. The use of corename "core_i" is however

     disabled, as this is used as the instance name of the core in the VHDL

     design.

   - Updates to improve timing on Root Port configuration

     o CR 572179

     Updates have been made to implementation scripts and delivered UCFs to

     improve timing on the Root Port configuration design.

   - Default simulation test has been upgraded

     o CR 571632, 532234

     Default simulation test has been upgraded to include memory and IO

     reads and writes.

   - cfg_msg_* interface ports on Root Port Model now visible

     o CR 571176

     cfg_msg_* ports are now visible at the top level of the Root Port Model

     delivered with Endpoint product.

   - cfg_wr_rw1c_as_rw_n port in Root Port product now connected to Hard Block

     o CR 571018

     cfg_wr_rw1c_as_rw_n port in the Root Port product is now connected to the

     port on the Integrated Block for PCI Express.

   - 128-bit wrapper back-pressure on User Interface when Block is full

     o CR 569361

     Issue resolved where the 128-bit wrapper was not back pressuring the User

     Interface when the Transmit buffers were full, causing data loss.

   - User non-posted OK signal undriven in VHDL Root Port model

     o CR 568793

     Issue resolved where the User non-posted OK signal was undriven in the

     VHDL Root Port model, preventing memory read transactions from passing to

     the User Interface.

   - Fixed missing default case statement in FSM in 128bit PIO example design

     o CR 567366

     Issue resolved where the default case statement was missing in the FSM in

     the 128bit PIO example design.

   - Redeclaration of signals in VHDL instantiation template

     o CR 555620

     Issue resolved where the signals were re-declared in the VHDL

     instantiation template, causing synthesis errors when used.

5. KNOWN ISSUES

   The following are known issues for v1.6 of this core at time of release:

    5.1  Functional Issues

    5.2  Simulation Issues

    5.3  Implementation Issues

           - Timing Closure

            In order to obtain timing closure, designers may be required to use

            multiple PAR seeds and/or floorplanning. Using Multi-Pass Place and

            Route (MPPR), designers can try multiple cost tables in order to meet

            timing. Please see the Development System Reference Guide in the

            Software Manuals found at: http://www.xilinx.com/support/library.htm

            for more information on using MPPR. Designers may also have to

            floorplan and add advanced placement constraints for both their

            design and the core to meet timing.

  The most recent information, including known issues, workarounds, and

  resolutions for this version is provided in the IP Release Notes Guide located at

   http://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

8. CORE RELEASE HISTORY

Date        By            Version      Description

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

09/21/2010  Xilinx, Inc.  1.6           12.3 support

07/23/2010  Xilinx, Inc.  1.5 Rev 1     Patch Release

04/19/2010  Xilinx, Inc.  1.5           12.1 support

03/09/2010  Xilinx, Inc.  1.4 Rev 3     Patch Release

03/09/2010  Xilinx, Inc.  1.4 Rev 2     11.5 support

12/02/2009  Xilinx, Inc.  1.4 Rev 1     Patch Release

12/02/2009  Xilinx, Inc.  1.4           11.4 support

09/16/2009  Xilinx, Inc.  1.3           11.3 support

06/24/2009  Xilinx, Inc.  1.2           11.2 support

04/24/2009  Xilinx, Inc.  1.1           Initial release (BETA)

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9. Legal Disclaimer

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