Hi Techies, We have a 12-layer board in which we have lot of differential LVDS pairs operating at several hundreds MHz. And we have SERDES signals (differential TX & RX pairs) operating at CPRI rate-4 i.e., 3Gbps. So can you just share me some inputs on exactly what are the guidelines to be followed while routing these signals. And is GND gaurding between the differential pairs improve the SI?Please share or refer me any documents in which i can get Good information on High-Speed design guidelines. Thanks With Best Regards Srikanth ------------------------------------------------------------------ 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 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