( ESNUG 354 Item 1 ) ---------------------------------------------- [6/1/00]
Subject: ( ESNUG 353 #2 ) Handling Scan Test Issues With Ultima ClockWise
> Did he insert the clock trees before adding scan logic or after? I have
> to assume the useful skew for functional mode is not useful for scan
> testing. Did he then go back in the netlist to add delays to the scan
> paths to fix hold time problems?
>
> - Tim Dunnington
> Motorola SPS Chicago, IL
From: Jon Stahl
Hi John,
Since I didn't use this capability - because we have our own methodology for
handling hold time issues - I forgot about it until one of my colleagues
reminded me after he saw ESNUG 353.
ClockWise has a feature where you can define scan chains (or use ones that
are already defined in your DEF), which it will then ignore hold time
problems on during permissible range generation and clock tree synthesis,
and later fix. I thought others would like to know, but I can't speak for
how well it works.
- Jon Stahl, Principal Engineer
Avici Systems N. Billerica, MA
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