[SI-LIST] Re: DDR SDRAM signal routing
- From: "Budathoki, Trilok (GE Consumer & Industrial)" <trilok.budathoki@xxxxxx>
- To: <pm_norge@xxxxxxxxxxx>
- Date: Mon, 8 Nov 2004 15:10:24 +0530
Peter
Visit Web site of Micron & Intel.
You'll get lots of information form there.
Trilok=20
=20
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Peter M=FCller
Sent: Monday, November 08, 2004 3:02 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] DDR SDRAM signal routing
I have been designing different kinds of electronic products, but never =
a=20
DDR SDRAM interface with 16 memory chips (MT46V64M8, 512Mb chip, 8-bit @ =
167MHz)and 2 ECC chips (same type).
Between the processor (IBM PowerPC 440GX) and memory chips there are =
only=20
the transmission lines and series termination resistors (25Ohm close to =
the=20
processor). I do not have the possibility to run simulations, so it's=20
learning by doing.
The data lines are around 60-70mm and the address line around 250mm!!! =
long.=20
I'm afraid I will get serious SI problems with this configuration. I =
read=20
some Appnotes but I could really use some help from experienced SI=20
designers. What kind of termination do I really have to implement and =
what=20
do I have to look out for?
Thanks in advance
Peter
_________________________________________________________________
Last ned MSN Messenger gratis http://www.msn.no/computing/messenger - =
Den=20
korteste veien mellom deg og dine venner
------------------------------------------------------------------
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 FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at: =20
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
=20
------------------------------------------------------------------
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 FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
