[PCB_FORUM] Re: Retaining nets on free-standing vias
- From: "Malou" <malourdes.kes93@xxxxxxxxxxxx>
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Fri, 3 Mar 2006 12:12:24 +0800
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
To: 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>
To: <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> 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] On
> > Behalf Of Daniel So
> > Sent: Thursday, March 02, 2006 12:05 PM
> > To: icu-pcb-forum@xxxxxxxxxxxxx
> > Subject: [PCB_FORUM] Re: Retaining nets on
> > free-standing vias
> >
> > Linda
> >
> > I tried going to 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]
> > Sent: Thursday, March 02, 2006 10:37 AM
> > To: 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. 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] On
> > Behalf Of Douglas Stanley
> > Sent: Thursday, March 02, 2006 10:32 AM
> > To: 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
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> > [mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On
> > Behalf Of
> > Michael.Catrambone@xxxxxxxxxx
> > Sent: Thursday, March 02, 2006 9:55 AM
> > To: 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
> > on 03/02/2006
> > 11:43:43 AM
> >
> > Please respond to icu-pcb-forum@xxxxxxxxxxxxx
> >
> > Sent by: icu-pcb-forum-bounce@xxxxxxxxxxxxx
> >
> >
> > To: <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
> >
> >
> >
> > (See attached file: C.htm)
> >
> >
> >
> >
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> >
> === message truncated ===
>
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