![](http://datasheet.mmic.net.cn/330000/MB90F884SPMC_datasheet_16438058/MB90F884SPMC_28.png)
MB90880 Series
28
(Continued)
Address
Register
abbreviation
Register name
R/W
Resource
Initial value
000054
H
ESCR4/
IBSR4
Extended communication control
register / I
2
C bus status register ch.4
R/W
Multi-function serial
ch.4
$$$$$$$$
B
000055
H
SSR4
Serial status register ch.4
R/W
$$$$$$$$
B
000056
H
RDR04/
TDR04
Transmission/reception data register 0
ch.4
R,W
$$$$$$$$
B
000057
H
RDR14/
TDR14
Transmission/reception data register 1
ch.4
R,W
$$$$$$$$
B
000058
H
BGR04
Baud rate generator register 0 ch.4
R/W
$$$$$$$$
B
000059
H
BGR14
Baud rate generator register 1 ch.4
R/W
$$$$$$$$
B
00005A
H
ISBA4
7-bit slave address register ch.4
R/W
00000000
B
00005B
H
ISMK4
7-bit slave address mask register ch.4
R/W
01111111
B
00005C
H
SMR5
Serial bus mode register ch.5
R/W
Multi-function serial
ch.5
$$$$$$$$
B
00005D
H
SCR5/IBCR5
Serial bus control register / I
2
C bus
control register ch.5
R/W
$$$$$$$$
B
00005E
H
ESCR5/
IBSR5
Extended communication control
register / I
2
C bus status register ch.5
R/W
$$$$$$$$
B
00005F
H
SSR5
Serial status register ch.5
R/W
$$$$$$$$
B
000060
H
RDR05/
TDR05
Transmission/reception data register 0
ch.5
R,W
$$$$$$$$
B
000061
H
RDR15/
TDR15
Transmission/reception data register 1
ch.5
R,W
$$$$$$$$
B
000062
H
BGR05
Baud rate generator register 0 ch.5
R/W
$$$$$$$$
B
000063
H
BGR15
Baud rate generator register 1 ch.5
R/W
$$$$$$$$
B
000064
H
ISBA5
7-bit slave address register ch.5
R/W
00000000
B
000065
H
ISMK5
7-bit slave address mask register ch.5
R/W
01111111
B
000066
H
OCCP0
Lower output compare register (ch.0)
R/W
16-bit I/O timer output
compare
(ch.0 to ch.5)
00000000
B
000067
H
Higher output compare register (ch.0)
00000000
B
000068
H
OCCP1
Lower output compare register (ch.1)
R/W
00000000
B
000069
H
Higher output compare register (ch.1)
00000000
B
00006A
H
OCCP2
Lower output compare register (ch.2)
R/W
00000000
B
00006B
H
Higher output compare register (ch.2)
00000000
B
00006C
H
OCCP3
Lower output compare register (ch.3)
R/W
00000000
B
00006D
H
Higher output compare register (ch.3)
00000000
B
00006E
H
Reserved
00006F
H
ROMM
ROM mirror function selection register
R/W
ROM mirror function
-------1
B