> The current sourced or sunk by the host is sufficient to overdrive my
> 10k resistor at all times except for the time when the host go's hi-z
> and starts listening to the bus instead of talking.
>
> Think about it.  The theory is sound.

I think you forgot that IIC is open collector and requires passive pullups
on both bus lines.  These tend to be significantly lower than 10K.  At best,
a 10K to ground will have no effect since the pullup overcomes it.  At
worst, the pullup doesn't overcome it and the bus line is permanently 0.


********************************************************************
Olin Lathrop, embedded systems consultant in Littleton Massachusetts
(978) 742-9014, olin@embedinc.com, http://www.embedinc.com

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