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RE: SJTP:Phantom sync headers




Ben and Jonathan,

As long as the pattern is being generated by setting the scrambler with a
seed then letting the scrambler run with a fixed 64 bit data pattern into
it, the patterns will not have any location that mimics the sync header. One
would have to design a continuously changing data pattern synchronized with
the seed load to get a data transition in a consistant spot for over 64 code
blocks. If a repeating data pattern did that for any scrambler seed, it
wouldn't be a very good scrambler.

Regards,
Pat 

-----Original Message-----
From: Ben Brown [mailto:bbrown@amcc.com]
Sent: Thursday, May 10, 2001 9:59 AM
To: serialpmd
Subject: SJTP:Phantom sync headers



All,

Jonathan brought up an interesting point that I have
elaborated upon below. Those who have begun or are
interested in beginning to search for patterns should
probably keep this in mind.

Ben

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