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Impulse Response Modeling on Non-Linear Shelf for Overclocking

Explore the impacts of overclocking on impulse response, from shelf representation to realistic cases at different speeds. Simulator comparisons ensuring accurate data analysis. Stay tuned for updates!

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Impulse Response Modeling on Non-Linear Shelf for Overclocking

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Presentation Transcript

  1. On non-linear edges and over-clocking A response to AIs taken during the Open IBIS Forum Teleconference by David Banas on April 5, 2013.

  2. Definition/illustration of the “shelf”

  3. The shelf yields a rather interesting impulse response: How can we possibly represent this, using a Ramp-only model?

  4. That was at full output driver saturation. • What about a more realistic case? Would the shelf still occur, if I were driving 12.5 Gbps, for instance?

  5. Yes! Although, it’s not as pronounced.

  6. As is evidenced by the new effective impulse response:

  7. So, we need V/T tables, but…

  8. Parser errors are one thing; what about EDA tools? • Simulator A: PASS • Simulator B: PASS • Simulator C: (Stay tuned.) • Note: “PASS” simply means that the typical, gross errors, regarding over-clocked operation, were not observed.

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