David,

Your proposal makes me unhappy for one reason:  it is conceivable that
somebody's receiver design will depend on receiving a certain bit pattern
in order to train itself.  Therefore, I think it's important to have all the transmitters
out there doing the same thing.

Andy Roy
LeCroy

PS: Just my own opinion, not an official position of LeCroy.




Robert,
 
Thank you for your reply.
 
I agree that it is important to keep with the rest of the standard.
 
Section 7.4 defines the idle dwords that are sent when a link is idle.
“Idle dwords are vendor-specific data dwords which are scrambled (see 7.6).”
 
It would seem to me that a precedents has been set for allowing “vendor-specific” implementation of the “scrambled training data” dwords between the train primitives.
 
if this is agreeable with the parties concerned I would be willing to draft a proposal.
 
Regards,
 
David Freeman
Finisar Corp