[SI-LIST] Re: Zdiff:100ohms?

Jayaprakash, in externally terminated systems, it is chosen based on 
reasonably realizable interconnect impedances.   But it may be changed up 
or down as needed to achieve a constant impedance by matching the 
terminations.  In ODT systems, the ODT value locks-in the choice.

Steve.
At 05:12 PM 4/21/2005 +0100, Jayaprakash wrote:
>Hi,
>
>  Why is it a common practice to have differential
>impedance (Zdiff) of 100 ohms ? what are implications
>of Zdiff lower or higher than 100 ohms?
>
>
>  Thanks,
>
>  regards,
>    Jayaprakash.
>
>Balachandran Jayaprakash
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