Datasheet

Appendix B Internal I/O Registers
Rev. 4.00 Jun 06, 2006 page 921 of 1004
REJ09B0301-0400
ICMR1—I
2
C Bus Mode Register 1 H'FF8F IIC1
ICMR0—I
2
C Bus Mode Register 0
H'FFDF IIC0
7
MLS
0
R/W
6
WAIT
0
R/W
5
CKS2
0
R/W
4
CKS1
0
R/W
3
CKS0
0
R/W
0
BC0
0
R/W
2
BC2
0
R/W
1
BC1
0
R/W
Bit
Initial value
Read/Write
Bit counter
BC2 BC1
0
1
0
1
0
1
BC0
0
1
0
1
0
1
0
1
Note: * Do not set this bit to 1 when the I
2
C bus format is used.
Synchronous
serial format
8
1
2
3
4
5
6
7
I
2
C bus
format
9
2
3
4
5
6
7
8
Serial clock select
CKS2 CKS1
0
1
0
1
0
1
0
1
0
1
0
1
CKS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
IICX
0
1
Clock
φ/28
φ/40
φ/48
φ/64
φ/80
φ/100
φ/112
φ/128
φ/56
φ/80
φ/96
φ/128
φ/160
φ/200
φ/224
φ/256
Wait insertion bit
0
Data and acknowledge bits transferred consecutively
1 Wait inserted between data and acknowledge bits
MSB-first/LSB-first select
*
0
MSB-first
1 LSB-first