[SI-LIST] : N-level signaling logic models

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From: Ray Anderson (raymonda@radium.eng.sun.com)
Date: Wed Dec 01 1999 - 12:16:06 PST


Anyone out there have any experience in modeling N-level
signaling drivers in spice ? Or even any ideas on how you
might implement such a beast as a behavioral model?

I'm thinking of a driver that has controlled (both in amplitude
and duration) 'overshoot' on both rising and falling edges.

Excuse the fine ASCII art, the following diagram illustrates
the basic concept I had in mind:

        ---- <-- controlled overshoot
        | |
        | |
        | ------ <-- Logic 1
        | |
  ------ | _______________ <--- Logic 0
                  | |
                  | |
                  | |
                  | |
                  |___| <-- controlled overshoot
                  
                  
  Ray Anderson
  
  Sun Microsytems Inc.

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