
4
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37272M6/M8–XXXSP/FP, M37272MA–XXXSP
M37272E8SP/FP, M37272EFSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.3
5. FUNCTIONAL BLOCK DIAGRAM
Fig. 5.1 Functional Block Diagram of M37272
P
W
M
5
P
W
M
4
P
W
M
3
P
W
M
2
P
W
M
1
P
W
M
0
S
D
A
2
S
D
A
1
S
C
L
2
S
C
L
1
O
u
t
p
u
t
p
o
r
t
s
P
5
2–
P
55
O
u
t
p
u
t
f
o
r
d
i
s
p
l
a
y
H
S
Y
N
C
V
S
Y
N
C
R
G
B
O
U
T
1
I
/
O
p
o
r
t
s
P
3
0,
P
31
C
o
n
t
r
o
l
s
i
g
n
a
l
P
i
n
s
f
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r
d
a
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a
s
l
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c
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r
C
l
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c
k
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t
p
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S
D
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s
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b
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c
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c
k
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t
p
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I
/
O
p
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t
s
P
2
6,
P
27
C
l
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c
k
i
n
p
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t
f
o
r
O
S
D
/
s
u
b
-
c
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c
k
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p
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t
A
-
D
c
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p
a
r
a
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r
8
-
b
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a
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h
m
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c
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n
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t
A
c
c
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m
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r
A
(
8
)
T
i
m
e
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c
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t
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s
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t
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r
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g
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s
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e
r
(
8
)
I
n
s
t
r
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c
t
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d
e
c
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d
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r
P
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s
o
r
s
t
a
t
u
s
r
e
g
i
s
t
e
r
P
S
(
8
)
S
t
a
c
k
p
o
i
n
t
e
r
S
(
8
)
I
n
d
e
x
r
e
g
i
s
t
e
r
Y
(
8
)
I
n
d
e
x
r
e
g
i
s
t
e
r
X
(
8
)
P
r
o
g
r
a
m
c
o
u
n
t
e
r
P
CL
(
8
)
P
r
o
g
a
m
c
o
u
n
t
e
r
P
CH
(
8
)
C
l
o
c
k
g
e
n
e
r
a
t
i
n
g
c
i
r
c
u
i
t
R
O
M
c
o
r
r
e
c
t
i
o
n
c
i
r
c
u
i
t
M
u
l
t
i
-
m
a
s
t
e
r
I
2
C
-
B
U
S
i
n
t
e
r
f
a
c
e
I
n
p
u
t
p
o
r
t
s
P
5
0,
P
51
S
y
n
c
h
r
o
n
o
u
s
s
i
g
n
a
l
i
n
p
u
t
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