•When the master
transmits an address byte, all the slaves are
interrupted. The slaves then check to see if they are being addressed or not.
•The addressed slave
will clear its SM2 bit and prepare to
receive the data bytes that follows and the slaves that weren’t addressed leave their SM2 bits set and go about their business, ignoring the incoming data bytes. They will be interrupted again when the next address byte is transmitted by the master processor.