[SI-LIST] Re: Ethernet - distance between PHY and magnetics - any limits

IMHO, put the drive transformer at the IC pins (assumes current mode
drive) but always put the CMC at the connector.  Some vendors offer the
xfmr and CMC in a single package, best used by placing the IC next to the
magnetics next to the connector.  Beyond those considerations, there is
no distance limit per se, just the usual management of loss and other
signal integrity phenomena.

Orin Laney

On Wed, 24 Sep 2008 18:36:21 +0100 dotter <dotter@xxxxxxxxxxxxxxxxxxxx>
writes:
> 
> Are there any limits on the distance between a twisted pair PHY and 
> the 
> magnetics?
> TIA!
> 
____________________________________________________________
Click now to find a divorce attorney near you!
http://thirdpartyoffers.juno.com/TGL2141/fc/Ioyw6i3oG1v5m3tnyvo8JuDc5W0D0YijnUCCpKON2h1uec84KFg84P/
------------------------------------------------------------------
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:
http://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:     
                http://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: