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Old 10-27-2007, 05:53 PM
David Spencer
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Default Re: Selecting I/O pins


> Any other points are welcome.


I would have mentioned something about in an ideal world making sure you can
achieve timing closure before committing to a PCB. These days, the effect of
I/O location on design performance is much, much less significant than it
was, say, ten years ago - largely because of better and faster on-chip
routing, but if you are pushing the limits then the I/O selection can make
all the difference.

Of course, since it was an interview question, the "right" answer would
probably some talked about working as a team with the PCB layout people and
choosing a pin-out that is acceptable to both groups.


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