All Gurus, Power Integrity is still far unmatured in PBA level. However, There are some tools let you do trend analysis during placing decup, but no tool which you may rely on the verifcation of Power Integrity, especaily on full board. Cadence's SQPI or Zuken's PowerSI are helpful to do such trend analysis. Some papers of Designcon 200X discuss water-like things. This is dangrous to innovation. Yanfeng Yu Sr. Engineer Nanjing R/D center, ZTE Corp. 63 Gongqingtuan Road, Nanjing 210012 Phone: 86-25-52872410 Mobile :13505159475 Mail: yu.yanfeng@xxxxxxxxxx ------------------------------------------------------------------ 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