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182
3. APPE NDIX
MITSUBISHI MICROCOMPUTER
3819 Group
3.3 Control registers
3819 Group USER’S MANUAL
Fig. 3.3.8 Structure of Serial I/O 3 control register
Fig. 3.3.7 Structure of Serial I/O 2 control register
Serial I/O 2 control register
b7 b6 b5 b4 b3 b2 b1 b0
B
0
Function
At reset
R W
0
1
2
3
4
5
6
0
0
0
0
0
0
Serial I/O 2 control register (SIO2CON) [Address:1D
16
]
Name
Internal synchronous clock
selection bits
Synchronous clock selection
bit
P5
1
/S
OUT2
P-channel output
disable bit
000 : f(X
IN
)/8 or f(X
CIN
)/8
001 : f(X
IN
)/16 or f(X
CIN
)/16
010 : f(X
IN
)/32 or f(X
CIN
)/32
011 : f(X
IN
)/64 or f(X
CIN
)/64
110 : f(X
IN
)/128 or f(X
CIN
)/128
111 : f(X
IN
)/256 or f(X
CIN
)/256
0 : I/O port
1 : S
OUT2
, S
CLK2
signal pins
0 : External clock
1 : Internal clock
0 : CMOS output (in output mode)
1 : N-channel open-drain output
(in output mode)
b2 b1b0
Serial I/O 2 port selection bit
(P5
1
,P5
2
)
S
RDY2
output selection bit
(P5
3
)
Transfer direction selection bit
0 : LSB first
1 : MSB first
0 : I/O port
1 : S
RDY2
signal pin
7
Serial I/O 3 control register
b7 b6 b5 b4 b3 b2 b1 b0
B
0
Function
R W
1
2
3
4
5
6
0
0
0
0
0
0
0
Serial I/O 3 control register (SIO3CON) [Address:1E
16
]
Name
Internal synchronous clock
selection bits
Synchronous clock selection
bit
P5
5
/S
OUT3
P-channel output
disable bit
000 : f(X
IN
)/8 or f(X
CIN
)/8
001 : f(X
IN
)/16 or f(X
CIN
)/16
010 : f(X
IN
)/32 or f(X
CIN
)/32
011 : f(X
IN
)/64 or f(X
CIN
)/64
110 : f(X
IN
)/128 or f(X
CIN
)/128
111 : f(X
IN
)/256 or f(X
CIN
)/256
0 : I/O port
1 : S
OUT3
, S
CLK3
signal pins
0 : External clock
1 : Internal clock
0 : CMOS output (in output mode)
1 : N-channel open-drain output
(in output mode)
b2 b1b0
Serial I/O 3 port selection bit
(P5
5
,P5
6
)
S
RDY3
output selection bit
(P5
7
)
Transfer direction selection
bit
0 : LSB first
1 : MSB first
0 : I/O port
1 : S
RDY3
signal pin
7
0
At reset
0