A virtual short on the back side of the pwb (this would require breaking up pwr and gnd nets) or, Define a split plane inclosing the pins you dont want connected which would be associated to a phony net
JaMi Smith wrote: > Is there a way to control the connection to Planes, or specifically forbid them, by > defining a physical area on the Board? > > Is there any other method? > > I am thinking of a circumstance such as a BGA where I may have 1 or more connections > which are "control" inputs to the BGA, and that as such they need to be tied either > High (VCC) or Low (GND), but which I do not want to connect directly to the Plane in > the middle of the Board, since I may want to "cut" them loose from that specific > connection during testing or at some other time. > > Is there any other way to do this, short of routing the connection out to a jumper > pattern outside of the BGA? > > Another common area where I might want to do this is with a component where I have > to put the Decoupling Capacitor(s) on the back side of the board, and I do not want > the specific via that goes thru the Board to the Power Pin to connect to the Plane > in the middle of the Board (i.e.: I want to decouple the Pin and not the Plane.) > > JaMi > -- >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> >John M. Cardone Electro-Mechanical Dsgn. Engr. Grp. >M/S 125-14R Mechanical Engineering Section, 352 >4800 Oak Grove Dr. NASA / Jet Propulsion Laboratory >Pasadena, Ca 91109 MailTo:[EMAIL PROTECTED] >Tel: 818.354.5407 Fax: 818.393.4399 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
