[SI-LIST] Re: METASTABILITY
- From: Somesh Dhavala <dhavala.somesh@xxxxxxxxx>
- To: arpad.muranyi@xxxxxxxxx
- Date: Fri, 6 Jan 2006 09:25:15 +0530
Hi Arpad,
METASTABILITY can be occured when it comes to pcb.
We cannt consider its only problem of circuit designer, SI engineer should
also consider the metastability.
On 1/5/06, Muranyi, Arpad <arpad.muranyi@xxxxxxxxx> wrote:
>
> Thanks for the numerous replies, public and private.
> I agree that there is a strong relationship between
> signals and metastability in general. I guess the
> reason I said that I didn't see the relationship in my
> first reply to this thread was because I was thinking
> of signal integrity as the art of making sure that the
> signal is clean, has the correct amplitude and slew
> rate, that it is timed correctly, along with dealing
> with transmission line effects, terminations, cross
> talk, etc... to avoid any possibilities for metastability.
> In that sense an SI engineer is working on signal
> quality problems, not so much on the metastability
> problem itself. The tricks an SI engineer uses to
> solve these problems and the tricks a circuit designer
> uses to reduce the metastability problem are quite a
> different world to me.
>
> This is why asking an explanation for what the "concept
> of *METASTABILITY*" is in an SI forum seemed inappropriate
> to me. Most SI experts are not circuit designers,
> therefore may not be knowledgeable enough to answer this
> question in depth.
>
> Arpad
> -----------------------------------------------------------
>
>
> -----Original Message-----
> From: Peterson, James F (FL51) [mailto:james.f.peterson@xxxxxxxxxxxxx]=20
> Sent: Thursday, January 05, 2006 9:16 AM
> To: Muranyi, Arpad; si-list@xxxxxxxxxxxxx
> Subject: RE: [SI-LIST] Re: METASTABILITY
>
> a good question, but I believe they are indeed related : a lot of signal
> integrity problems are timing problems (if we had enough time, they =
> wouldn't
> be signal integrity problems), some of those timing problems are =
> problems
> because they cause a signal to slide inside the setup/hold timing =
> boundaries
> of a flop, and this is where Metastability happens...=20
>
> best regards,
> Jim Peterson
> Honeywell
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] =
> On
> Behalf Of Muranyi, Arpad
> Sent: Thursday, January 05, 2006 11:37 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: METASTABILITY
>
> Maybe I am missing the point, but I don't see that metastability and SI =
> are
> related subjects...
>
> Arpad
> -----------------------------------------=3D20
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] =
> =3D
> On Behalf Of Somesh Dhavala
> Sent: Thursday, January 05, 2006 6:54 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] METASTABILITY
>
> Hi All,
> I am very new to the SI.
> I am unable to understand the concept of *METASTABILITY*, I am very =3D =
> 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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>
--
Somesh Dhavala
CG-CoreEl
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