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

Andrew Kohlsmith (akohlsmith@benshaw.com)
Wed, 09 Sep 1998 16:08:43 -0400


> The IIC bus has no arbitration capability at all. One checks a busy
> bit to see if it is ready. If not busy, one sends data (address first).
> The receiving machine ACKs every bus state change.

Untrue.

Bus arbitration in a multi-master environment is clearly defined by
Philips, and as Daniel had described. There is further arbitration
possible (clock handovers, etc) and they are fully defined in the
whitepaper, "The I2C Bus and How to Use it" by Philips.

Andrew

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