User`s manual

38
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37281MAH–XXXSP,M37281MFH–XXXSP
M37281MKH–XXXSP,M37281EKSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
Fig. 8.6.6 I
2
C Control Register
b7 b6 b5 b4 b3 b2 b1 b0
0
to
2
Bit counter
(Number of transmit/recieve
bits)
(BC0 to BC2)
b2 b1 b0
0 0 0: 8
0 0 1: 7
0 1 0: 6
0 1 1: 5
1 0 0: 4
1 0 1: 3
1 1 0: 2
1 1 1: 1
3I
2
C-BUS interface use
enable bit (ESO)
0: Disabled
1: Enabled
4 Data format selection bit
(ALS)
0: Addressing format
1: Free data format
5 Addressing format selection
bit (10BIT SAD)
0: 7-bit addressing format
1: 10-bit addressing format
6, 7 Connection control bits
between I
2
C-BUS interface
and ports
(BSEL0, BSEL1)
b7 b6 Connection port (See note)
0 0: None
0 1: SCL1, SDA1
1 0: SCL2, SDA2
1 1: SCL1, SDA1, SCL2, SDA2
0
0
0
0
0
I
2
C control register (S1D) [Address 00F916]
I
2
C Control Register
B
Name Function
s
After reset R
W
R
W
R
W
R
W
R
W
R
W