[PCB_FORUM] Re: Intelligent Dual Footprints 15.x
- From: Michael.Catrambone@xxxxxxxxxx
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Wed, 29 Sep 2004 11:51:24 -0500
Kevin,
You are 100% correct.. I have Viewlogic on the Front End and
I have used Modules in my designs many times. As long as
the reference designators match on the schematic side you
are good to go. I thought I saw a procedure, some time ago, to
pass the Module information forward from a Viewlogic schematic
into Allegro but if I remember correctly it was not easy to do and
took a lot of time to setup. All you need to do on the Viewlogic
side is simply copy the schematic page that contains the
Module circuit and increment the reference designators accordingly.
Michael Catrambone
UTStarcom, Inc.
Kevin McCowan <kmccowan
09/29/2004 11:39 AM
Please respond to icu-pcb-forum@xxxxxxxxxxxxx
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Subject: [PCB_FORUM] Re: Intelligent Dual Footprints 15.x
I guess I don't understand.
If I place a module with several symbols it still has individual
symbols, right?
If I have a schematic with all of the same components defined
in it so I get a refdes for each component in the module then
I should be able to assign each of those refdes's to their individual
components. I don't need to call the module from the schematic,
I just need to place the module as one piece and then assign
the refdes's as required. Is this wrong? I can't see where it
would make any difference.
If you do it as you say, it makes sense, but that isn't an option
for the viewlogic user.
For them they would just place and wire up the same pile of stuff
each time or copy it from one schematic to another as necessary.
Am I missing something?
Kevin
Jean Bratton wrote:
> Because it's not going to be one refdes you're placing, it'll be the IC
and
> all the associated caps etc. In a module you put all the individual parts
in
> as a schematic module, then place that module on the board and all the
> individual parts are placed at one time. Since schematic modules are a
> Cadence creation, only the Cadence schematic tools support it. Since
Steve
> is using VueLogic as his front-end tool, he won't be able to set the
module
> up on the schematic side, so he won't be able to place it on the PCB
side.
>
>
> -----Original Message-----
> From: Kevin McCowan [mailto:kmccowan@xxxxxxxxxxxxxx]
> Sent: Wednesday, September 29, 2004 11:45 AM
> To: icu-pcb-forum@xxxxxxxxxxxxx
> Subject: [PCB_FORUM] Re: Intelligent Dual Footprints 15.x
>
> But that makes no sense.
> If you have the footprint right why cannot you assign a refdes to
> the allegro symbol? Why should allegro care what tool the netlist
> came from once it is imported? It would be like placing a spare
> component and then once the netlist is in assigning the refdes.
> I could be wrong, but still, it does not add up to me.
>
> Somebody try it, please and let us know.
>
> Thanks,
> Kevin McCowan
> Sr. PCB Designer
> TSI Telsys
>
> Jean Bratton wrote:
>
>>Yes it is, but it only works with Concept and Capture.
>>
>>
>>
>>------------------------------------------------------------------------
>>
>>*From:* george.h.patrick@xxxxxxxxxxxxxx
>>[mailto:george.h.patrick@xxxxxxxxxxxxxx]
>>*Sent:* Wednesday, September 29, 2004 11:33 AM
>>*To:* icu-pcb-forum@xxxxxxxxxxxxx
>>*Subject:* [PCB_FORUM] Re: Intelligent Dual Footprints 15.x
>>
>>
>>
>>
>>
>>This is a perfect use for a module.
>>
>>
>>
>>I don't know if you can do this without Concept-HDL, though.
>>
>>
>>
>>--
>>/George Patrick/
>>*Tektronix, Inc.*
>>P.O. Box 500, M/S 39-512
>>Beaverton, OR 97077-0001
>>Phone: 503-627-5272 Fax: 503-627-5587
>>http://www.tektronix.com <http://www.tektronix.com/>
>>http://www.pcb-designer.com <http://www.pcb-designer.com/>
>>
>>/It's *_my_* opinion, not Tektronix'/
>>
>> -----Original Message-----
>> *From:* Design1955@xxxxxxxxxxx [mailto:design1955@xxxxxxxxxxx]
>> *Sent:* Tuesday, September 28, 2004 17:23
>> *To:* icu-pcb-forum@xxxxxxxxxxxxx
>> *Subject:* [PCB_FORUM] Intelligent Dual Footprints 15.x
>>
>> I have been asked to create a footprint containing the following
>> information:
>>
>> A bga containing all of it's fan-out recommended by the spec.
>>
>> all of it's supporting decoupling caps, connected per the EE's rules.
>>
>> So every time I place this component it will have the particular BGA
>> and the supporting caps placed and also routed to the power and
>> ground pins per the schematic.
>>
>> I am using 15.2 and VueLogic front end.
>>
>> Does anyone know if there is a way to make this work as a complete
>> intelligent footprint you placing it as a block of components with
>> routing?
>>
>> Thanks
>>
>> Steve
>>
>>
>>
>
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