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RE: [802.3ae] ethernet CRC




Hi,

   You can start with all zeroes however u will lock
yourself out so it is prudent to start all FFs with 
ones at reset AND to have a all-zero 
detection-prevention circuit.

Rahul.

-----Original Message-----
From: owner-stds-802-3-hssg@xxxxxxxxxxxxxxxxxx
[mailto:owner-stds-802-3-hssg@xxxxxxxxxxxxxxxxxx]On Behalf Of
Giacomo.Accattoli@xxxxxxxxxx
Sent: Tuesday, March 26, 2002 9:05 AM
To: stds-802-3-hssg@xxxxxxxx
Subject: [802.3ae] ethernet CRC


Hallo,

Some items for CRC calculation are not clear for me.
What's the initial state for the computation (all 0s, all 1s or other)?
Can I have a numerical example of  Ethernet CRC-32 calculation, please?

Best regards,
Giacomo