Datasheet

Section 17 I
2
C Bus Interface (IIC)
Rev. 3.00 Sep. 28, 2009 Page 533 of 910
REJ09B0350-0300
Bit Bit Name
Initial
Value
R/W Description
3 ALIE 0 R/W Arbitration Lost Interrupt Enable
Enables or disables IRIC flag setting and interrupt
generation when arbitration is lost.
0: Disables interrupt request when arbitration is lost.
1: Enables interrupt request when arbitration is lost.
2 ALSL 0 R/W Arbitration Lost Condition Select
Selects the condition under which arbitration is lost.
0: When the SDA pin state disagrees with the data that
IIC bus interface outputs at the rise of SCL, or when
the SCL pin is driven low by another device.
1: When the SDA pin state disagrees with the data that
IIC bus interface outputs at the rise of SCL, or when
the SDA line is driven low by another device in idle
state or after the start condition instruction was
executed.
1
0
FNC1
FNC0
0
0
R/W
R/W
Function 1, 0
These bits cancel some restrictions on usage.
FNC0 FNC1
0 0: Restrictions on operation canceled
0 1: Setting prohibited
1 0: Setting prohibited
1 1: Restrictions on operation remaining in effect
Note: When the IIC module is used, make sure to set
both of the bits to 1.