Experts, Can anyone explain that why in some designs we see source as well as load terminations, I mean termination at both side of traces ? If ringing is a issue then only source termination should be sufficient to control it and we can use a receiver with very high input impedance i.e. no need to match input impedance of receiver with transmission line characteristics impedance. Rajan ------------------------------------------------------------------ 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