XCN10032 Datasheet, PDF (1/4 Pages) Xilinx, Inc – GTX transceivers general guidance

XCN10032 (v1.0) September 27, 2010
Virtex-6: GTX User Guide, Data
Sheet (SYSMON DCLK) and JTAG
ID Changes
Product Change Notice - For Your Information
Overview
The purpose of this notification is to inform Xilinx customers of the following changes to the Virtex^®-6 FPGA user guide,
data sheet and JTAG revision codes:
• User Guide: GTX transceivers general guidance
• Data Sheet: System Monitor (SYSMON) DCLK data sheet change
• JTAG revision code: change for ongoing production enhancements
Description
The following general guidance is provided for the Virtex-6 FPGA GTX Transceivers User Guide (UG366)
http://www.xilinx.com/support/documentation/user_guides/ug366.pdf.
GTX Transceiver Static Operating Behavior
The TXOUTCLK and RXRECCLK output ports might operate at reduced frequency in buffer bypass mode if
conditions (1) and (2) persist for more than 15,000 cumulative hours at 65°C Tj, 2,500 cumulative hours at
85°C Tj, or 800 cumulative hours at 100°C Tj:
1. Power has been applied to VCCINT.
2. The device is in one of the following states:
a. The FPGA is not configured
b. The FPGA is configured, but the transceiver is un-instantiated
c. The transceiver is instantiated, but no reference clock is toggling
d. The transceiver is instantiated, but is held in reset or power-down
Reason for change
The reason of change is detailed in Xilinx Answer Record 35055 http://www.xilinx.com/support/answers/35055.htm.
For more information, refer to the sections titled ‘TX Buffer Bypass’ and ‘RX Buffer Bypass’ in the Virtex-6
FPGA GTX Transceivers User Guide for a description of the buffer bypass modes. The impact of reducing
operating frequency is that it will result in increased bit error rates.
Products Affected
This change includes Virtex-6 LXT and SXT FPGA products, speed (-1, -2, -3, and -1L) and temperature
grades (C and I) and Virtex-6 CXT FPGA products, speed (-1 and -2) and temperature grades (C and I). The
products affected include all standard part numbers and specification control document (SCD) versions of the
standard part numbers.
© Copyright 2010 Xilinx, Inc. XILINX, the Xilinx logo, Virtex, Spartan, ISE, and other designated brands included herein are trademarks of Xilinx in the United States and
other countries. All other trademarks are the property of their respective owners.
XCN10032 (v1.0) September 27, 2010
www.xilinx.com
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