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Bit Bit Name
Initial Value R/W
3
STOP
0
2
AL
0
1
AAS
0
0
ADZ
0
Rev. 1.00, 09/03, page 486 of 704
Description
R/W
Stop Condition Detection Flag
[Setting condition]
•
When a stop condition is detected after frame transfer
[Clearing condition]
•
When 0 is written to STOP after reading STOP = 1
R/W
Arbitration Lost Flag
Indicates that arbitration was lost in master mode.
When two or more master devices attempt to seize the bus
at nearly the same time, the I
SDA. If it detects data differing from the data it sent, it sets
the AL flag to 1 to indicate that the bus has been taken by
another master.
[Setting conditions]
•
If the internal SDA and SDA pin does not match at the
rise of SCL in master transmit mode
•
When the SDA pin goes high in master mode while a
start condition is detected
[Clearing condition]
•
When 0 is written to AL after reading AL = 1
R/W
Slave Address Recognition Flag
In slave receive mode, this flag is set to 1 if the first frame
following a start condition matches bits SVA6 to SVA0 in
SAR.
[Setting conditions]
•
When the slave address is detected in slave receive
mode
•
When the general call address is detected in slave
receive mode
[Clearing condition]
•
When 0 is written to AAS after reading AAS = 1
R/W
General Call Address Recognition Flag
This bit is valid in slave receive mode.
[Setting condition]
•
When the general call address is detected in slave
receive mode
[Clearing condition]
•
When 0 is written to ADZ after reading ADZ = 1
2
C bus interface monitors the
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