CR-5000 High-Speed Design Methodology



Topics Covered


  • What is High-Speed Design?
  • How industry drivers force high-speed and why is it (and signal integrity) important?
  • What causes the problems?
  • Harmonics, clock frequencies, sources of noise
  • Noise Margins, definition, calculations, impact, considerations, timing, goals

Transmission lines as main problem cause:

  • What is a transmission line?
  • Transmission line effects on printed circuit boards
  • Undershoot / Overshoot
  • Ringback, Monotonicity, Reflection and Crosstalk
  • Current paths on a PCB – return current

Timing and Board interconnect delay:

  • What is Flight Time
  • How to treat interconnect delay in timing

Printed circuit boards:

  • Printed circuit board material types and characteristics, dielectrics
  • Board Stack up
  • Impedance control
  • Transmission Line Impedance Zo, target impedance
  • Drivers and receivers, switching characteristics


  • When is it needed?
  • What type of termination to choose
  • Impact on the timing
  • Control undershoot/overshoot by termination techniques


  • When are topologies important?
  • How do topologies affect signal integrity and timing?


  • Coupling Types, causes and limits
  • When crosstalk gets important, noise margins
  • How can cross talk be minimized?
  • Crosstalk and timing

Differential Signaling/Differential Pairs:

  • Why are they important?
  • Noise and EMI
  • Better timing
  • Layout of differential pairs

Layout issues:

  • What issues are important in today’s high-speed designs ?
  • Decoupling, planes, power supply issues
  • Building design experience
  • High-Speed Routing

Simulation Issues and Device Models:

  • Model formats (SPICE, IBIS)
  • Driver/Receiver models
  • Simulator technique
  • Accuracy
  • Transmission line simulation
  • PCB simulation

Examples and practical sessions:

  • Applying techniques and tools
  • What-if scenarios
  • Clock distribution
  • Topology
  • Termination
  • Timing with reflections
  • Differential pairs
  • Field Solving and Simulations
  • Design Techniques


Who should attend:

  • Digital logic designers
  • System architects
  • EMC specialists
  • Technicians
  • Printed wiring layout professionals
  • Applications engineers
  • Anyone who works with digital logic at high speeds (20 MHz to 20+ GHz)
  • Recommended as basic for any CR-5000 Lightning tool training.




Zuken Ltd, Aztec W, Almondsbury, Bristol, UK

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