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Chapter 33 I2C Controller
2.I2C Interface Registers
This bit is cleared by a (repeated-) start or stop condition.
[bit 0] ADT (Address Data Transfer)
This bit indicates the detection of an address data transfer.
This bit is set to ‘1’ by a start condition. It is cleared after the second byte if a ten bit slave address header with
write access is detected, else it is cleared after the first byte.
"After" the first/second byte means:
• a ‘0’ is written to the MSS bit during a master interrupt (MSS=‘1’ and INT=‘1’ in IBCR0)
• a ‘1’ is written to the SCC bit during a master interrupt (MSS=‘1’ and INT=‘1’ in IBCR0)
• the INT bit is being cleared
• the beginning of every byte transfer if the interface is not involved in the current transfer as master or slave
1 General call address received as slave.
0 Incoming data is not address data (or bus is not in use).
1 Incoming data is address data.