Re: [offtopic] Re: I2c was: Cobalt Micro (was Re: Build your own

H. Peter Anvin (hpa@transmeta.com)
8 Sep 1998 08:20:52 GMT

Followup to: <Pine.GSO.4.02A.9809080051400.199-100000@red.seas.upenn.edu>
By author: Vladimir Dergachev <vladimid@red.seas.upenn.edu>
In newsgroup: linux.dev.kernel
>
> >
> > Would it be possible to crack open my TV, find the tuner area, locate the
> > I2C, hook it to the computer and sniff it, then use the computer to
> > control the TV? (same for microwave and other such devices)?
> >
> Correct me if I am wrong . I think i2c specification allows only one chip
> to drive the bus. So if you tap into it your tap should be passive. Right ?
>
> Vladimir Dergachev

I believe it allows one chip at a time to drive the bus; it can
definitely move around (assuming all chips are fully I2C compliant.)
I don't know how it arbitrates the bus.

-hpa

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