( ESNUG 404 Item 15 ) -------------------------------------------- [01/08/03]

From: John Gyurek <gyurekj/gyurekj atatat tttccceee pot calm frogfrog>
Subject: How Are The Tools/Techniques For Sync/Async Resets Down At 0.13 ??

Hi, John,

I would like to hear from anyone with experience in 0.13 um and below on
the reset synchronous vs. asynchronous issue.  In the past this was purely
a religious debate but now with signal integrity issues, momentum toward
synchronous global resets is building.  Several articles have been
published, but I have not heard from anyone with a horror story about
glitches causing unwanted resets of flops.  What about the output of the
signal integrity tools?  Have glitches above threshold been reported?  How
many?  Bottom line: is this a manageable problem in today's tools or
something one should just avoid altogether?  Does anyone recommend
re-writing legacy code?

    - John Gyurek
      Thomson Consumer Electronics               Indianapolis, IN