You can find a detailed description of how to use the I2C bus on the Philips
site, www-us.semiconductors.philips.com.  The document of interest would be,
"The I2C bus and how to use it."  Look under microprocessors.

As for the slave address.  Typically the upper address range of a slave
devices is hard coded.  And the lower 3 lsb of the address range is user
selectable.  I2C uses a 7 bit address range (there's also a 10 bit, but you
can read up on that on your own).

Later
DW

        -----Original Message-----
        From:   Peter Schultz [SMTP:schupet@DVP.COM]
        Sent:   Thursday, June 11, 1998 1:57 PM
        To:     PICLIST@MITVMA.MIT.EDU
        Subject:        I2C

        Hi All,
        An usaul quick question,
        The I2C bus supply mulitple devices, correct ?
        You have to address them, so how the receiving device will know what
is its
        address ?
        Where can I find the detailed description of I2C bus ?
        Lots of thanks,
        Peter