Datasheet

Section 16 I
2
C Bus Interface (IIC) (Optional)
Rev. 3.00 Mar 21, 2006 page 434 of 788
REJ09B0300-0300
Bit Bit Name Initial Value R/W Description
1ADZ 0 R/(W)
*
General Call Address Recognition Flag
In I
2
C bus format slave receive mode, this flag is set to 1 if
the first frame following a start condition is the general call
address (H'00).
[Setting condition]
When the general call address (one frame including a R/W
bit is H'00) is detected in slave receive mode and FS = 0 or
FSX = 0
[Clearing conditions]
• When ICDR is written to (transmit mode) or read from
(receive mode)
• When 0 is written in ADZ after reading ADZ = 1
• In master mode
If a general call address is detected while FS=1 and
FSX=0, the ADZ flag is set to 1; however, the general call
address is not recognized (AAS flag is not set to 1).