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Xilinx Website Resources
Signal Integrity Central
www.xilinx.com/xlnx/xil_prodcat_landingpage.jsp?title=Signal+Integrity
This Xilinx portal has everything you need to
achieve reliable PCB designs on the first pass.
It covers signal integrity fundamentals, power
supply and bypassing, simulation tools, PCB
design and thermal considerations, and
multi-gigabit signaling, with a variety of documents,
FAQs, and links.
White Papers and Application Notes
White Paper WP174, “Methodologies for
Efficient FPGA Integration into PCBs,”
describes how PCB design considerations play
a major role in obtaining the expected performance
from FPGAs. It then focuses on
early analysis and simulation methodologies as
a way of performing a guided implementation.
Application Note XAPP623, “Power
Distribution System (PDS) Design: Using
Bypass/Decoupling Capacitors,” details
Virtex™ power supply requirements and
techniques for designing power distribution
systems using bypass/decoupling capacitors.
Application Note XAPP689, “Managing
Ground Bounce in Large FPGAs,” explains
the ground bounce effect, with calculations
to help you derive an FPGA pinout that
meets input undershoot and logic-low voltage
requirements for devices receiving signals
from an FPGA.
Application Note XAPP609, “Local
Clocking Resources in Virtex-II™ Devices,”
describes the different local clocking
resources available in the Virtex-II architecture.
Along with a reference design, this
application note explores local clocking
resources in source-synchronous applications.
Xilinx and Partner Software Resources
www.support.xilinx.com/support/software_manuals.htm
The ISE software tool suite includes helpful
tools like the pin assignment constraints
editor (PACE) to help you during the I/O
planning and pinout assignment phases.
Another helpful tool is Xpower, which
allows you to plan and estimate your FPGA
power requirements.
AllianceEDA
www.xilinx.com/xlnx/xil_prodcat_landingpage.jsp?title=Alliance+EDA+Program
Visit this website to learn more about the tools
mentioned in the Xcell SI series. This page
provides information on all third-party tools
interfacing with Xilinx software.
Education Courses
www.xilinx.com/support/education-home.htm
Xilinx offers courses about PCB considerations
when designing with high-performance
FPGAs. The “High-Speed Signal Integrity
Design” course, for example, teaches how signal
integrity techniques are applicable to highspeed
interfaces between Xilinx FPGAs and
semiconductor memories.
The course covers high-speed bus and clock
design, including transmission line termination,
loading, and jitter. For additional details,
visit the education services website.
Design Services
www.xilinx.com/xds/
Xilinx provides a comprehensive service
offering that includes education services,
support services, and design services to accelerate
time to knowledge and time to market.
To effectively design new multi-gigabit serial
systems, it is imperative to understand the
complete channel. Xilinx services leverage
new techniques, relying on in-house expertise
and state-of-the-art tools to create accurate
models, evaluation platforms, and
production backplanes. Xilinx helps companies
to design, simulate, and characterize
every aspect of the channel from 1 Gbps to
more than 10 Gbps.
RocketIO Multi-Gigabit
Serial Transceivers
RocketIO Resources
www.xilinx.com/serialsolution/
The Serial Tsunami Solutions portal
provides you with a wealth of information
on RocketIO™ transceivers, with
access to transceiver data sheets, characterization
data, protocols, articles, white
papers, and a gateway to the Serial
Backplane Simulator tool.
The Serial Backplane Simulator
www.xilinx.com/products/xaw/hsd/simulator.htm
The Serial Backplane Simulator provides
signal integrity simulations for more
than 300 situations when using Virtex-II Pro™ devices to drive signals across
backplanes and line cards. The analyzer
covers several different backplane materials,
speed, pre-emphasis, lengths, peak-to-peak differential swings, number of
connectors, and connector types.
RocketLabs
www.xilinx.com/rocketlabs/
With 15 locations around the world,
RocketLabs is the first network of labs to
provide system designers with free access
to high-speed equipment, multiple hardware
evaluation boards, application
expertise, signal integrity simulation tools,
and presentations and specialized training.
RocketIO Design Kits
www.xilinx.com/support/software/spice/spice-request.htm
From the SPICE suite, you can download
RocketIO SPICE models and
design kits. The kits have comprehensive
documentation and examples that will
jumpstart the simulations process and
get you to the simulation results analysis
phase faster and easier.
Reference Books
- “Computer Circuits Electrical Design”
by Ron K. Poon
- “Digital Systems Engineering”
by William J. Daly and John W. Poulton
- “High-Frequency Characterization of
Electronic Packaging” by Luc Martens
- “Signal Integrity – Simplified”
by Eric Bogatin
- “High-Speed Digital Design: A Handbook
of Black Magic” by Howard Johnson
- “High Speed Signal Propagation: Advanced
Black Magic” by Howard W. Johnson
- “Digital Signal Integrity: Modeling and
Simulation with Interconnects and
Packages” by Brian Young
- “MECL System Design Handbook,”
Motorola Semiconductor Products, Inc.
- “High-Speed Digital System Design:
A Handbook of Interconnect Theory
and Design Practices” by Stephen H. Hall,
Garrett W. Hall, and James A. McCall
Other Resources
Conclusion
We hope that you enjoyed reading this special
SI series and that you feel better
informed in dealing with signal and power
integrity issues in your current and future
high-speed PCB designs.
If you have any comments or feedback
about the topics discussed, please e-mail us
at si_xcell@xilinx.com.
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