Datasheet

Section 15 I

C Bus Interface (IIC)

Rev. 6.00 Mar. 24, 2006 Page 246 of 412

REJ09B0142-0600

Bit Bit Name

Initial

Value R/W Description

5 IRTR 0 R/W I

C Bus Interface Continuous Transmission/Reception

Interrupt Request Flag

[Setting conditions]

In I

C bus interface slave mode

• When the TDRE or RDRF flag is set to 1 when

AASX = 1

In I

C bus interface other modes

• When the TDRE or RDRF flag is set to 1

[Clearing conditions]

• When 0 is written in IRTR after reading IRTR = 1

• When the IRIC flag is cleared to 0

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

[Setting condition]

When bus arbitration was lost in master mode.

[Clearing conditions]

• When 0 is written in AL after reading AL = 1

• When ICDR data is written (transmit mode) or read

(receive mode)