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Signal Integrity and Board Design for Xilinx FPGAs

Course Description

Learn when and how to apply signal integrity techniques to high-speed interfaces between Xilinx FPGAs and other components. This comprehensive course combines design techniques and methodology with relevant background concepts of high-speed bus and clock design, including transmission line termination, loading and jitter.
You will work with IBIS models and complete simulations using Mentor Graphics HyperLynx. Other topics include managing PCB effects and on-chip termination. This course balances lecture modules with instructor demonstrations and practical hands-on labs.
Training Duration
3 days
Who Should Attend?
Digital designers, board layout designers, or scientists, engineers and technologists seeking to implement Xilinx solutions. Also end users of Xilinx products who want to understand how to implement high-speed interfaces without incurring the signal integrity problems related to timing, crosstalk and overshoot or undershoot infractions.
  • FPGA design experience preferred 
  • Familiarity with high-speed PCB concepts
  • Basic knowledge of digital and analog circuit design
  • Vivado™ tool knowledge is helpful
Software Tools
  • Vivado System Edition 2012.4
  • Mentor Graphics HyperLynx 8.2.1
  • Architecture: N/A*
  • Demo board: None*
* This course does not focus on any particular architecture. Please contact Doulos for specifics or other customizations.
Skills Gained
After completing this comprehensive training, you will know how to:
  • Describe signal integrity effects
  • Predict and overcome signal integrity challenges
  • Simulate signal integrity effects
  • Verify and derive design rules for the board design
  • Apply signal integrity techniques to high-speed interfaces between Xilinx FPGAs and semiconductor circuits
  • Plan your board design under FPGA-specific restrictions
  • Supply the FPGAs with power
  • Handle thermal aspects
Course Outline

Part 1 – Signal Integrity

  • Signal Integrity Introduction
  • Transmission Lines
  • IBIS Models and SI Tools
  • Lab 1: Invoking HyperLynx
  • Reflections
  • Lab 2: Reflection Analysis
  • Crosstalk
  • Lab 3: Crosstalk Analysis
  • Signal Integrity Analysis
  • Power Supply Issues
  • Signal Integrity Summary


Part 2 – Board Design

  • Board Design Introduction
  • FPGA Power Supply
  • Lab 4: Power Prediction
  • FPGA Configuration and PCB
  • Signal Interfacing: Interfacing in General
  • Signal Interfacing: FPGA-Specific Interfacing
  • Lab 5: I/O Pin Planning
  • Die Architecture and Packaging
  • PCB Details
  • Thermal Aspects
  • Lab 6: Thermal Design
  • Tools for PCB Planning and Design
  • Board Design Summary
Lab Descriptions
  • Lab 1: Invoking HyperLynx – Become familiar with signal integrity tools. Use HyperLynx for schematic entry, modeling and simulation. Modify a standard IBIS model to define a driver and then use its stackup editor to define a PCB.
  • Lab 2: Reflection Analysis – Define a circuit and run various simulations for effects of reflection.
  • Lab 3: Crosstalk Analysis – Using simulation, analyze circuit topology and PCB data for strategies to minimize crosstalk.
  • Lab 4: Power Prediction – Estimate initial power requirements using an Excel spreadsheet, then use XPower Analyzer to accurately predict board power needs.
  • Lab 5: I/O Pin Planning – Use the PlanAhead software to identify pin placement and implement pin assignments.
  • Lab 6: Thermal Design – Determine maximum junction temperature and calculate acceptable thermal resistance.

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