![](http://datasheet.mmic.net.cn/330000/MB90P234_datasheet_16438148/MB90P234_24.png)
MB90230 Series
24
Initial values
0: The initial value for the bit is “0.”
1: The initial value for the bit is “1.”
X: The initial value for the bit is undefined.
–: The bit is not used; the initial value is undefined.
*1: Access inhibited
*2: The initial value depends on each bus mode.
*3: Only this area can be used as the external access area in the area that follows address 0000FF
H
. Access to
any address in reserved areas specified in the I/O map table is handled as access to an internal area. An
access signal to the external bus is not generated.
Address
Register
Register
name
Access
Resouce
name
Initial value
A9
H
Timebase timer control register
TBTC
R/W
Timebase
timer
– – – 0 0 0 0 0
AA
H
to
AF
H
Reserved area
—
—
—
—
B0
H
Interrupt control register 00
ICR00
R/W
Interrupt
controller
0 0 0 0 0 1 1 1
B1
H
Interrupt control register 01
ICR01
R/W
0 0 0 0 0 1 1 1
B2
H
Interrupt control register 02
ICR02
R/W
0 0 0 0 0 1 1 1
B3
H
Interrupt control register 03
ICR03
R/W
0 0 0 0 0 1 1 1
B4
H
Interrupt control register 04
ICR04
R/W
0 0 0 0 0 1 1 1
B5
H
Interrupt control register 05
ICR05
R/W
0 0 0 0 0 1 1 1
B6
H
Interrupt control register 06
ICR06
R/W
0 0 0 0 0 1 1 1
B7
H
Interrupt control register 07
ICR07
R/W
0 0 0 0 0 1 1 1
B8
H
Interrupt control register 08
ICR08
R/W
0 0 0 0 0 1 1 1
B9
H
Interrupt control register 09
ICR09
R/W
0 0 0 0 0 1 1 1
BA
H
Interrupt control register 10
ICR10
R/W
0 0 0 0 0 1 1 1
BB
H
Interrupt control register 11
ICR11
R/W
0 0 0 0 0 1 1 1
BC
H
Interrupt control register 12
ICR12
R/W
0 0 0 0 0 1 1 1
BD
H
Interrupt control register 13
ICR13
R/W
0 0 0 0 0 1 1 1
BE
H
Interrupt control register 14
ICR14
R/W
0 0 0 0 0 1 1 1
BF
H
Interrupt control register 15
ICR15
R/W
0 0 0 0 0 1 1 1
C0
H
to
FF
H
External area
—
—
—
*3