[SI-LIST] Re: METASTABILITY
- From: "Jon Keeble" <jkeeble@xxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Sun, 8 Jan 2006 09:52:41 +1100
An excellent paper on metastability is the Feb 1997 TI article sdya006.pdf
by Eilhard Haseloff
http://focus.ti.com/docs/logic/catalog/resources/appnoteabstract.jhtml?familyId=256&abstractName=sdya006
- A basis of measurement is theoretically established
- A measurement circuit is defined (counts metastable events)
- Circuit is used to test ten 5v logic families (F is best)
Extracting some key points
- the metastable state is defined as a function of time (tx, after the
clock,) that the output level remains undefined
- expressions for MTBF are developed that include
- in one case, "doubling clocking" increases MTBF from 54 minutes to 2
million years
It would be interesting to repeat this with current low voltage logic
families.
Jon Keeble
JKC Pty Ltd
>
> Hi All,
> I am very new to the SI.
> I am unable to understand the concept of *METASTABILITY*, I am very =
> thank
> ful to you if you explain me in detail.
> Please suggest me some documents.
>
> Thanks & Regards
> Somesh Dhavala
> CG-CoreEl
>
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