[SI-LIST] Re: DDR3 Derating for slew rate less
- From: "Dhamija, Naresh" <Naresh.Dhamija@xxxxxxx>
- To: "hanymhfahmy@xxxxxxxxx" <hanymhfahmy@xxxxxxxxx>, Walter Katz <wkatz@xxxxxxxxxx>, "si-list-bounce@xxxxxxxxxxxxx" <si-list-bounce@xxxxxxxxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Mon, 20 Jun 2011 14:56:30 +0530
I checked Brian's e-mail. Infact my formulas are based on his e-mail only. See
below statement in his e-mail " These formulas only apply to derating above
1V/ns. Below 1V/ns there is another function involved.
Regards
Naresh
-----Original Message-----
From: hanymhfahmy@xxxxxxxxx [mailto:hanymhfahmy@xxxxxxxxx]
Sent: Monday, June 20, 2011 2:17 PM
To: Walter Katz; si-list-bounce@xxxxxxxxxxxxx; Dhamija, Naresh;
si-list@xxxxxxxxxxxxx
Subject: Re: [SI-LIST] Re: DDR3 Derating for slew rate less
No that is not true.
Brian Moran sent an email earlier describing the de-rating.
There is still de-rating for slew-rates less than 1V/ns, pls check the tables
in Jedec device specs along w Brian Moran email from Intel.
Sent via BlackBerry offered by Mobinil
-----Original Message-----
From: "Walter Katz" <wkatz@xxxxxxxxxx>
Sender: si-list-bounce@xxxxxxxxxxxxx
Date: Mon, 20 Jun 2011 01:39:37
To: 'Dhamija, Naresh'<Naresh.Dhamija@xxxxxxx>; <si-list@xxxxxxxxxxxxx>
Subject: [SI-LIST] Re: DDR3 Derating for slew rate less
Naresh,
For slew rates having lesser (faster) values that (1V/ns) you should use
the 1V/ns value.
Walter
wkatz@xxxxxxxxxx
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Dhamija, Naresh
Sent: Monday, June 20, 2011 1:10 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] DDR3 Derating for slew rate less
Hi SI Gurus,
I have gone through dome of the the old mails on DDR3 derating which
helped me to understand the derating. My formulas based on those e-mails
are working fine for signal having higher slew rate compared to normal
(1V/ns), but for slew rate having lesser value than normal (1V/ns), I
guess I am missing something. This information is also very little
mentioned in those emails. Pls. help.
Regards
Naresh
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.net
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.net
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.net
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
