![](http://datasheet.mmic.net.cn/330000/MB90F553A_datasheet_16437927/MB90F553A_23.png)
MB90550A/550B Series
23
(Continued)
Address
Register name
Abbreviated
register name
Read/write
Resource name
Initial value
24
H
Serial mode control status
register 0
SMCS0
R/W
Extended I/O
serial interface 0
_ _ _ _ 0 0 0 0
25
H
Serial mode control status
register 0
R/W!
0 0 0 0 0 0 1 0
26
H
Serial data register 0
SDR0
R/W
XXXXXXXX
27
H
Clock frequency-divider control
register
CDCR
R/W
Communication
prescaler
0 _ _ _ 1 1 1 1
28
H
Serial mode control status
register 1
SMCS1
R/W
Extended I
/
O
serial interface
1
_ _ _ _ 0 0 0 0
29
H
Serial mode control status
register 1
R/W!
0 0 0 0 0 0 1 0
2A
H
Serial data register 1
SDR1
R/W
XXXXXXXX
2B
H
(Disabled)
2C
H
I
2
C bus status register 0
IBSR0
R
I
2
C interface 0
0 0 0 0 0 0 0 0
2D
H
I
2
C bus control register 0
IBCR0
R/W
0 0 0 0 0 0 0 0
2E
H
I
2
C bus clock select register 0
ICCR0
R/W
_ _ 0XXXXX
2F
H
I
2
C bus address register 0
IADR0
R/W
_ XXXXXXX
30
H
I
2
C bus data register 0
IDAR0
R/W
XXXXXXXX
31
H
(Disabled)
32
H
I
2
C bus status register 1
IBSR1
R
I
2
C interface 1
0 0 0 0 0 0 0 0
33
H
I
2
C bus control register 1
IBCR1
R/W
0 0 0 0 0 0 0 0
34
H
I
2
C bus clock select register 1
ICCR1
R/W
_ _ 0XXXXX
35
H
I
2
C bus address register 1
IADR1
R/W
_ XXXXXXX
36
H
I
2
C bus data register 1
IDAR1
R/W
XXXXXXXX
37
H
I
2
C bus port select register
ISEL
R/W
_ _ _ _ _ _ _ 0
38
H
Interrupt/DTP enable register
ENIR
R/W
DTP/external
interrupt
0 0 0 0 0 0 0 0
39
H
Interrupt/DTP factor register
EIRR
R/W
XXXXXXXX
3A
H
Request level setting register
ELVR
R/W
0 0 0 0 0 0 0 0
3B
H
0 0 0 0 0 0 0 0
3C
H
Control status register
ADCS0
R/W
A/D convertor
0 0 0 0 0 0 0 0
3D
H
ADCS1
R/W!
0 0 0 0 0 0 0 0
3E
H
Data register
ADCR0
R
XXXXXXXX
3F
H
ADCR1
R/W!
0 0 0 0 1 _XX