mb90f377pff-g Fujitsu Microelectronics, Inc., mb90f377pff-g Datasheet - Page 93

• Manufacturer Part Number: mb90f377pff-g
• Description: 16-bit Proprietary Microcontroller
• Manufacturer: Fujitsu Microelectronics, Inc.

18. 3-channel PS/2 interface
(1) Register configuration of 3-channel PS/2 interface
PS/2 Interface Mode Register
PS/2 Interface Data Register (Ch 0, Ch 2)
PS/2 Interface Status Register
PS/2 Interface Control Register
The 3-channel PS/2 interface consists of 3 individual channels of PS/2 interface that can be operated concur-
rently. PS/2 interface is a two wires, bidirectional serial bus providing economical way for data exchange between
host (keyboard controller) and device (keyboard mouse, etc) .
PS/2 Interface Data Register (Ch 1)
Address : ch1
Address : ch0
Address : ch0
Address : 000059
Address : 000057
ch2
ch1
ch2
ch1
ch2
Initial value
Initial value
Initial value
Initial value
Initial value
Read/write
Read/write
Read/write
Read/write
Read/write
000056
000058
000051
000053
000055
000050
000052
000054
H
H
H
H
H
H
H
H
H
H
PS2E
R/W
R/W
D7
PE
R
0
0
0
R/W
D7
15
15
0
15
7
7
R/W
FED
D6
0
R
R/W
0
D6
14
14
0
14
6
6
FRE/NAK
R/W
D5
0
R
R/W
0
D5
13
13
0
13
5
5
FEDE
R/W
R/W
RAF
D4
0
R
0
R/W
0
D4
12
12
0
12
4
4
R/W
R/W
D3
TS
NFS1
IE
0
R
0
R/W
R/W
0
D3
11
11
0
0
11
MB90370/375 Series
3
3
BREQ
R/W
R/W
TBC
D2
NFS0
R
R/W
R/W
0
0
0
D2
10
10
0
0
10
2
2
R/W
BNR
R/W
D1
TE
DIV1
0
R
0
R/W
R/W
0
D1
9
0
9
0
1
1
9
R/W
R/W
R/W
RE
D0
TC
DIV0
0
0
R/W
R/W
0
D0
8
0
8
0
0
8
0
Bit number
PSMR
Bit number
PSDR1
Bit number
PSDR0/2
Bit number
PSSR0/1/2
Bit number
PSCR0/1/2
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