[SI-LIST] Re: Article discussion on bad packages - I/O
- From: "Lee Ritchey" <leeritchey@xxxxxxxxxxxxx>
- To: "Chris Cheng" <Chris.Cheng@xxxxxxxxxxxx>
- Date: Thu, 6 Jan 2005 18:10:34 -0800
Depends on whether you mean electron flow or "current" flow. The diagram
depicts electron flow. And, yes, the topic was focused only on I/O SSO.
Lee W. Ritchey
Speeding Edge
P. O. Box 2194
Glen Ellen, CA 95442
Phone- 707-568-3983
FAX- 707-568-3504
I just used the energy it took to be angry to write some blues.
Count Basie
> [Original Message]
> From: Chris Cheng <Chris.Cheng@xxxxxxxxxxxx>
> Cc: <si-list@xxxxxxxxxxxxx>
> Date: 1/6/2005 4:57:09 PM
> Subject: [SI-LIST] Re: Article discussion on bad packages - I/O
>
> Larry,
> I would completely agree with you on the need to separate the discussion
> between I/O core core power distribution.
> Today is the first time I actually have a chance to read the actual
article
> in EE times that starts the original discussion and I am convince that the
> intend of the article is on I/O SSO noise, not core noise impact on the
> FPGA.
> May be it's just me but the first figure in the article looks really
funny.
> The current flow direction in the figure for 0->1 or 1->0 seems to be in
> reversed direction of what the actual flow should be. What do you think ?
> Needless to say, they are I/O switching current, not core.
>
> -----Original Message-----
> From: Larry SMITH [mailto:Larry.Smith@xxxxxxx]
> Sent: Thursday, January 06, 2005 11:28 AM
> To: zhang_kun@xxxxxxxxxx
> Cc: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: Article discussion on bad packages - I/O and core
>
>
> It would help if we would use the SSN language when referring to I/O PI
> and transient current language when referring to core. This will help
> to reduce confusion and emotional mis-interpretations. The core and I/O
> PI problems are significantly different and need to be handled
> differently in our hardware architectures.
>
> By breaking the PI problems down to these levels, I believe we can come
> to better agreement on how to handle them. (But then maybe some of the
> "entertainment appeal" of SI-list will be lost!)
>
> regards,
> Larry Smith
> Sun Microsystems
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