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RE: 8b/10b and EMI

Hi Kamran,

I have to confess, I am not up on the scrambled 8B10B proposal
so I will raise this question. If you pre-scramble the data, how
do you pre-scramble the IDLE?

I believe that scrambling data is unnecessary as the FCC tests 
allow you to send random data during your tests. However, they 
also require you to operate in a likely mode which is a totally
idle system. Does the IDLE state randomize the 8B10B code as well?



>  From: Kameran Azadet [mailto:ka@xxxxxxxxxx]
>  Hi Rick,
>  	thanks for your response below, and I agree with you 
>  guys that if 
>  the decision is to stick to 8b/10b and use scrambling on the 
>  top of it for
>  improving EMI, then scrambling should be prior to the block code. One
>  problem right now, is that this is not a proposal. Is it?
>  Kamran