Fujitsu F2MC-16LX Hardware Manual page 444

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CHAPTER 22 I C INTERFACE
[Bit 3] TRX: Transfer/Receive
This bit is used to indicate transmission or reception for data transfer.
0
1
[Bit 2] AAS: Addressed As Slave
This bit is used to detect the addressing mode.
0
1
This bit is cleared if a start or stop condition is detected.
[Bit 1] GCA: General Call Address
This bit is used to detect the general call address (00
0
1
This bit is cleared if a start or stop condition is detected.
[Bit 0] FBT: First Byte Transfer
This bit is used to detect the first byte.
0
1
This bit is cleared if the INT bit is set to "0" or addressing was performed in a mode other
than slave mode, even though the bit was set to "1" because of detection of a start condition.
428
Reception
Transmission
Addressing was performed in a mode other than slave mode.
Addressing was performed in slave mode.
No general call address is received in slave mode.
A general call address is received in slave mode.
The data received is not byte one.
The data received is byte one (address data).
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