One solution which I have used, is to create a dummy routing layer. Then pick a convenient component pin and hook the vias and pin together with a connect line. This is space and routing dependent. If there is routing room, use an existing layers.
It would be a really nice feature to be able to "lock" the net to the via.
Hope it helps, dave
Malou wrote:
Hi
Yah I agree with you, but if the design have a lot of reinforcement via to stitch your gnd or power plane meaning the whole board has lot of scattered gnd via or power , think we can't just delete and place a new one.
----- Original Message -----
From: Jaymole Varghese <mailto:jaymole@xxxxxxxxxxxx>
To: icu-pcb-forum@xxxxxxxxxxxxx <mailto:icu-pcb-forum@xxxxxxxxxxxxx>
Sent: Friday, March 03, 2006 11:16 AM
Subject: [PCB_FORUM] Re: Retaining nets on free-standing vias
Hi I don't understand why we have to go for complex solutions. I think if we just delete that via, place a new via in same place and manually giving the desired connectivity to the new via can solve this problem.
----- Original Message ----- From: "Les Wong" <maveric0@xxxxxxxxxxx <mailto:maveric0@xxxxxxxxxxx>> To: <icu-pcb-forum@xxxxxxxxxxxxx <mailto:icu-pcb-forum@xxxxxxxxxxxxx>> Sent: Friday, March 03, 2006 2:18 AM Subject: [PCB_FORUM] Re: Retaining nets on free-standing vias
> Gary: > Is that Allegro 15.5 ? > Les > > --- Gary MacIndoe <gary.macindoe@xxxxxxx <mailto:gary.macindoe@xxxxxxx>> wrote: > > > > > Hey guys/gals, > > > > Cadence has addressed this issue, at least to an > > extent (when copying vias). > > Go into Edit -> Copy, vias turned on, in the Options > > tab, then check "Retain > > net of vias" box. Then, you copy say a gnd via and > > drop it down anywhere > > not on a trace, it retains the gnd net. You can > > move it around all you > > want, it will still be gnd. > > > > Gary E. MacIndoe > > PCB Design Engineer > > Advanced Micro Devices > > Longmont, Colorado > > > > > > -----Original Message----- > > From: icu-pcb-forum-bounce@xxxxxxxxxxxxx <mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> > > [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On > > Behalf Of Daniel So > > Sent: Thursday, March 02, 2006 12:05 PM > > To: icu-pcb-forum@xxxxxxxxxxxxx <mailto:icu-pcb-forum@xxxxxxxxxxxxx> > > Subject: [PCB_FORUM] Re: Retaining nets on > > free-standing vias > > > > Linda > > > > I tried going to www.cdnusers.org <http://www.cdnusers.org>, registered and > > then logged on. I went > > to Forums -> Silicon-package-board -> Shared > > code-Skill. There I saw > > discussions but no skill codes. Where did I go > > wrong? > > > > Daniel > > > > -----Original Message----- > > From: icu-pcb-forum-bounce@xxxxxxxxxxxxx <mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> > > [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] > > Sent: Thursday, March 02, 2006 10:37 AM > > To: icu-pcb-forum@xxxxxxxxxxxxx <mailto:icu-pcb-forum@xxxxxxxxxxxxx> > > Subject: [PCB_FORUM] Re: Retaining nets on > > free-standing vias > > > > Doug, > > > > We have a PCB SKILL forum on the newly launched > > Cadence user community > > website where you can upload your skill routine for > > all to see. > > > > you will need to register to post the code. > > > > The site is found at www.cdnusers.org <http://www.cdnusers.org>. You can > > register, wait a bit for > > your authorization code, login, then click on the > > "Forums" tab in the > > upper navigation bar. > > > > > > Linda > > > > -----Original Message----- > > From: icu-pcb-forum-bounce@xxxxxxxxxxxxx <mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> > > [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On > > Behalf Of Douglas Stanley > > Sent: Thursday, March 02, 2006 10:32 AM > > To: icu-pcb-forum@xxxxxxxxxxxxx <mailto:icu-pcb-forum@xxxxxxxxxxxxx> > > Subject: [PCB_FORUM] Re: Retaining nets on > > free-standing vias > > > > My method doesn't really solve the problem, but it > > makes it easy to deal > > with. I wrote a small SKILL routine that allows you > > to select any via > > and change the via's net. > > > > I works by clicking on a via (single select, window, > > or temp group) and > > then clicking on any shape, pin, or cline. The via > > then takes on the net > > of the shape/pin/cline you selected. Works like a > > champ. It's 30 lines > > of code. > > > > > > > > Douglas G. Stanley > > Broadcom Corporation > > (949) 926-5889 > > dstanley@xxxxxxxxxxxx <mailto:dstanley@xxxxxxxxxxxx> > > > > > > > > > > > > -----Original Message----- > > From: icu-pcb-forum-bounce@xxxxxxxxxxxxx <mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> > > [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On > > Behalf Of > > Michael.Catrambone@xxxxxxxxxx <mailto:Michael.Catrambone@xxxxxxxxxx> > > Sent: Thursday, March 02, 2006 9:55 AM > > To: icu-pcb-forum@xxxxxxxxxxxxx <mailto:icu-pcb-forum@xxxxxxxxxxxxx> > > Subject: [PCB_FORUM] Re: Retaining nets on > > free-standing vias > > > > > > Hello, > > > > I deal with this all the time.. The best way I found > > to handle it was to > > define a small static shape on top of the via with > > the net name attached > > to it. This shape is defined a little larger than > > the via geometry on > > the top side of the PCB and whenever I move the via > > I make sure to > > select the shape as well. > > > > Kind of a pain but it gets me past the problem. > > Maybe someone else has > > a better way of handling this. > > > > Mike > > > > > > > > > > > > "Daniel So" <danielso@xxxxxxxxxxxxx>@freelists.org <mailto:danielso@xxxxxxxxxxxxx%3E@freelists.org> > > on 03/02/2006 > > 11:43:43 AM > > > > Please respond to icu-pcb-forum@xxxxxxxxxxxxx <mailto:icu-pcb-forum@xxxxxxxxxxxxx> > > > > Sent by: icu-pcb-forum-bounce@xxxxxxxxxxxxx <mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx> > > > > > > To: <icu-pcb-forum@xxxxxxxxxxxxx <mailto:icu-pcb-forum@xxxxxxxxxxxxx>> > > cc: > > Subject: [PCB_FORUM] Retaining nets on > > free-standing vias > > > > > > Hi Everyone > > > > > > > > Please excuse me if this is an old subject. > > > > > > > > I have thru-hole vias connected to a gnd plane on > > the top layer. There > > is +5v plane on the bottom side of the PCB. There > > are no clines > > connected to the vias so when ever I move the gnd > > plane, the vias are > > now associated to the +5v plane. I now have to move > > the +5v plane before > > moving back the gnd plane if I want to keep these > > vias associated to > > gnd. This is really a bad problem on a multi-layer > > board with different > > planes on different layers and when I have vias that > > I want to keep > > associated to different nets. > > > > > > > > Is there any way to keep the vias associated to the > > original nets > > without connecting clines to them? Cadence did not > > have an answer. > > > > > > > > Thanks for any suggestions > > > > Daniel So > > > > email: danielso@xxxxxxxxxxxxx <mailto:danielso@xxxxxxxxxxxxx> > > > > > > > > (See attached file: C.htm) > > > > > > > > > ----------------------------------------------------------- > > To subscribe/unsubscribe: > > Send a message to > > icu-pcb-forum-request@xxxxxxxxxxxxx <mailto:icu-pcb-forum-request@xxxxxxxxxxxxx> > > with a subject of subscribe or unsubscribe > > > > To view the archives of this list please login at > > //www.freelists.org. Our list name is > > icu-pcb-forum or go to > > > === message truncated === > > ----------------------------------------------------------- > To subscribe/unsubscribe: > Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx <mailto:icu-pcb-forum-request@xxxxxxxxxxxxx> > with a subject of subscribe or unsubscribe > > To view the archives of this list please login at > //www.freelists.org. Our list name is icu-pcb-forum > or go to //www.freelists.org/archives/icu-pcb-forum/ > > Problems or Questions: > Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx <mailto:icu-pcb-forum-admins@xxxxxxxxxxxxx> > > Want to post a job listing ? DON'T DO IT HERE! > Better yet, join our jobs listing forum. > > SUBSCRIBE: icu-jobs-forum-subscribe@xxxxxxxxxx <mailto:icu-jobs-forum-subscribe@xxxxxxxxxx> > POST: icu-jobs-forum@xxxxxxxxxx <mailto:icu-jobs-forum@xxxxxxxxxx> > -----------------------------------------------------------
----------------------------------------------------------- To subscribe/unsubscribe: Send a message to icu-pcb-forum-request@xxxxxxxxxxxxx <mailto:icu-pcb-forum-request@xxxxxxxxxxxxx> with a subject of subscribe or unsubscribe
To view the archives of this list please login at //www.freelists.org. Our list name is icu-pcb-forum or go to //www.freelists.org/archives/icu-pcb-forum/
Problems or Questions: Send an email to icu-pcb-forum-admins@xxxxxxxxxxxxx <mailto:icu-pcb-forum-admins@xxxxxxxxxxxxx>
Want to post a job listing ? DON'T DO IT HERE! Better yet, join our jobs listing forum.
SUBSCRIBE: icu-jobs-forum-subscribe@xxxxxxxxxx <mailto:icu-jobs-forum-subscribe@xxxxxxxxxx> POST: icu-jobs-forum@xxxxxxxxxx <mailto:icu-jobs-forum@xxxxxxxxxx> -----------------------------------------------------------
-- Dave Seymour, CID+ Catapult Communications Inc. 800 Perimeter Park Dr, Suite A Morrisville, NC 27560
Direct: (919)653-4249 Main: (919)653-4180 Fax: (919)653-4297
Dave.seymour@xxxxxxxxxxxx