Renesas H8S/2158 User Manual page 547

Bit Initial
Name Value
Bit
4 AASX 0
3 AL 0
R/W Description
R/(W) * Second 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 SVAX6 to
SVAX0 in SARX.
[Setting condition]
•
When the second slave address is detected in slave receive
mode and FSX = 0 in SARX
[Clearing conditions]
•
When 0 is written in AASX after reading AASX = 1
•
When a start condition is detected
•
In master mode
R/(W) * Arbitration Lost Flag
Indicates that arbitration was lost in master mode.
[Setting conditions]
When ALSL = 0
•
If the internal SDA and SDA pin disagree at the rise of SCL in
master transmit mode
•
If the internal SCL line is high at the fall of SCL in master
transmit mode
When ALSL = 1
•
If the internal SDA and SDA pin disagree at the rise of SCL in
master transmit mode
•
If the SDA pin is driven low by another device before the I
bus interface drives the SDA pin low, after the start condition
instruction was executed in master transmit mode
[Clearing conditions]
•
When ICDR is written to (transmit mode) or read from
(receive mode)
•
When 0 is written in AL after reading AL = 1
2
Section 17 I C Bus Interface (IIC)
Rev. 3.00 Jan 25, 2006 page 493 of 872
2
C
REJ09B0286-0300