[SI-LIST] Re: Zdiff:100ohms?
- From: steve weir <weirsi@xxxxxxxxxx>
- To: edpc108@xxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Thu, 21 Apr 2005 09:16:22 -0700
Jayaprakash, in externally terminated systems, it is chosen based on
reasonably realizable interconnect impedances. But it may be changed up
or down as needed to achieve a constant impedance by matching the
terminations. In ODT systems, the ODT value locks-in the choice.
Steve.
At 05:12 PM 4/21/2005 +0100, Jayaprakash wrote:
>Hi,
>
> Why is it a common practice to have differential
>impedance (Zdiff) of 100 ohms ? what are implications
>of Zdiff lower or higher than 100 ohms?
>
>
> Thanks,
>
> regards,
> Jayaprakash.
>
>Balachandran Jayaprakash
>Celestijnenlaan,
>63/2, 3001, Heverlee,
>Leuven, Belgium.
>Mobile: +32-472-630120
>
>Send instant messages to your online friends http://uk.messenger.yahoo.com
>------------------------------------------------------------------
>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
>
------------------------------------------------------------------
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: