Renesas H8S/2158 User Manual page 548

2
Section 17 I C Bus Interface (IIC)
Bit Initial
Name Value
Bit
2 AAS 0
1 ADZ 0
Rev. 3.00 Jan 25, 2006 page 494 of 872
REJ09B0286-0300
R/W Description
R/(W) * Slave Address Recognition Flag
2
In I C bus format slave receive mode, this flag is set to 1 if the
first frame following a start condition matches bits SVA6 to SVA0
in SAR, or if the general call address (H'00) is detected.
[Setting condition]
•
When the slave address or general call address is detected
in slave receive mode and FS = 0 in SAR
[Clearing conditions]
•
When ICDR is written to (transmit mode) or read from
(receive mode)
•
When 0 is written in AAS after reading AAS = 1
•
In master mode
R/(W) * General Call Address Recognition Flag
2
In I 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 is detected in slave receive
mode and FS = 0 in SAR or FSX = 0 in SARX
[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).