If your EE's are using FPGA's go hierarchical, if it a large
schematic ie  a complete system, with multiple EE's
hierarchical makes sense from a control standpoint.

Don't use hierarchical unless there's a need for it, some
co's use it for everything witch is overkill.
Flat faster and easier..
Lou
http://www.waterw.com/~ldallara

Karl Bates wrote:

> Derek,
>     We use hierarchical schematics at my location.
>
> Pros:
>     Easier to create multiple instances of a symbol. i.e. memory circuits /
> subcircuits.
>     Less schematic pages
>
> Cons:
>    creates more questions about what you are really looking at (What you
> see is not what you get).
>     some schematic packages have a problem with back annotation (making
> refdes' appear properly or at all.
>
> My recommendation.....  do not use hierarchical schematics.   seems to
> create more problems than it's worth.
>
> Karl
>
> Derek Wynne wrote:
>
> > Hi
> >
> > I am looking for some info on the PROs/CONs of hierarchical schematic
> > design practices vs flat file schematic design.
> >
> > If anybody has written a paper on this or knows of a good book or has
> > had experiences of the advantages or disadvantages of each method,
> > please contact or mail me.
> >
> > All information appreciated.
> >
> > Regards,
> >
> > Derek Wynne.
> >
> > **************************
> > Derek Wynne,
> > Toucan Technology Limited,
> > IDA Business Park,
> > Dangan,
> > Galway,
> > Ireland.
> > Tel 00 353 91 519900
> > Fax 00 353 91 519901
> > email [log in to unmask]
> > **************************
> >
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>   ------------------------------------------------------------------------
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>   Karl Bates <[log in to unmask]>
>   Senior PCB Designer
>   Northern Illinois IPC Designer Council President, Certified Designer
>
>   Karl Bates
>   Senior PCB Designer                                                   <[log in to unmask]>
>   Northern Illinois IPC Designer Council President, Certified Designer
>   2000 Naperville Rd.                                                   Work: (630) 713-9853
>   Mail Stop IH2F105                                                     Fax: (630) 713-4905
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>   Additional Information:
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>   Version        2.1



--
Lou Dallara   Techno Visionary
" Where there is no vision, the people perish."
-- Proverbs 29:18
http://www.waterwheel.net/~ldallara/arco_alumni/

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