Datasheet

Section 16 I
2
C Bus Interface (IIC) (Option)
Rev. 6.00 Mar. 18, 2010 Page 650 of 982
REJ09B0054-0600
Bit Bit Name
Initial
Value R/W Description
4 AASX 0 R/(W)
*
Second Slave Address Recognition Flag
[Setting condition]
When the second slave address is detected in slave receive
mode and FSX = 0
[Clearing conditions]
• When 0 is written in AASX after reading AASX = 1
• When a start condition is detected
• In master mode
3 AL 0 R/(W)
*
Arbitration Lost Flag
Indicates that bus arbitration was lost in master mode.
[Setting conditions]
• When the internal SDA and SDA pin do not match at the
rise of SCL
• When the internal SCL is high at the fall of SCL
[Clearing conditions]
• When 0 is written in AL after reading AL = 1
• When ICDR data is written (transmit mode) or read
(receive mode)
2 AAS 0 R/(W)
*
Slave Address Recognition Flag
[Setting condition]
When the slave address or general call address (one frame
including a R/W bit is H'00) is detected in slave receive mode
and FS = 0
[Clearing conditions]
• When ICDR data is written (transmit mode) or read
(receive mode)
• When 0 is written in AAS after reading AAS = 1
• In master mode