[SI-LIST] Re: ISI Jitter

Jayaprakash,

ISI is generated by the single and multiple reflections and the 
(frequency dependent)
attenuation and group delay of interconnect sections cascaded from 
driver to receiver. 

With the exception of driver and receiver reflections, everything else 
can be treatet
as a linear network, and therefore ISI can be derived from the step 
response of the
network.  If you enjoy going through the details yourself, you can do 
everything,
including eye-graph generation, in Excel or a similar spreadsheet.  
MATLAB and
similar packages are very powerful and would save a lot of coding.  
Finally, you can
get free or commercial tools to do the entire job (you can find pointers 
in the si-list archives).

As a good reading on the background, I would suggest to go with any of 
the books
on the topic, such as Howard Johnson's second book, or Dennis Miller 
"Designing
High-Speed Interconnect Circuits".

Regards,

Istvan Novak
SUN Microsystems





Jayaprakash wrote:

>Hi,
>
>  Are there models for ISI jitter estimation ? I would
>highly appreciate if someone point me to relevant
>literature. 
>
>
>  Thanks,
>
>  Best regards,
>     Jayaprakash. 
>
>------------------------------------------------ 
>Jayaprakash Balachandran 
>  
>          -----
>
>
>Online Guide to Ethernet
>http://www.ethernetguide.netfirms.com
>------------------------------------------------
>
>
>       
>  
>

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