Re: Timing

From: C. Kumar <cpk@cadence.com>
Date: Tue Mar 15 1994 - 07:04:34 PST

>
> To all the ibis forum -
>
> In looking over some of the BIRDS before the last forum call, the
> question occured to me that if we are putting voltage thresholds into
> the input models for the sake of timing analysis ( which I agree with
> fully! ) should we also have, probably optional, annotation of the setup
> and hold times for clocked devices for the same purpose? If we view
> ibis models as some kind of "electronic data book", then it would seem
> natural to include these times, possibly under an optional [Timing]
> keyword. This would give enough data all in one place to flag
> violations. I doubt that there is enough data to assess the metastable
> behviour possible if the violation occurs, and I am not at all sure we
> want to put that much data in the model. It gets too much into the
> specifics of the circuitry, as well as not being particularly amenable
> to measurement apart from simulation. Does the forum feel this warrants
> a BIRD?
>
> Thanks,
> 
> ______________________________________________ ____________________
> | | Seeking to return to | / __________________O
> | Bob Ward | the North Country, MN, | / /|________________
> | bward@neosoft.com | WI, ND, SD, or MT. Also | / /_/________________O
> | 713.568.4122 | considering Mtn. West. | /_____________________
> |___________________|_________________________| |_____________________O
>

I whole hearedly agree with Bob's view. It makes sense to have all the
related data in one place.

- kumar
Received on Tue Mar 15 07:08:04 1994

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