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Re: [BP] channels to test our spec.


Charles,
I ran these channels with the basic sig adhoc setup but with TJ=0.28UI and DCD=3.125%.  I used a PRBS15 data pattern (which is what we defined for the sig adhoc setup) and simulated for 1M bit times.  These were through-channel sims only, no crosstalk applied.  The performance of all channels were considerably better than the thru_worstcase channel.  The lowest performing channel was m82ripple90 with 18% opening at E-12.  

I was surprised at the difference compared to thru_worstcase, which had an eye which was just closed at E-12.  One difference in the previous sim is that I used PRBS23 (since that's what is defined for EIT) and simulated for 10M bits.  I reran the channel using PRBS15 & 1M bits, which resulted in about an 8% eye at E-12.  So there is a fair impact from PRBS23, but this channel is still significantly worse than the others.  

Bottom line is that I'm not finding anything with these new channels that would provide insight on how to redraw the line.


Thanks,        Joe


Joe Abler                                                             abler@us.ibm.com
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Charles Moore <charles.moore@AVAGOTECH.COM>

02/22/2006 07:41 PM
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        Subject:        [BP] channels to test our spec.



joe, et al,
Here are some channels to look at the ripple vs attenuation
problem.
charles
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#### constructedChannels1.zip has been removed from this note on February 28, 2006 by Joe M Abler