參數(shù)資料
型號： M37272MA-055SP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
中文描述： 單芯片8位CMOS微機隱蔽字幕解碼器和屏幕顯示控制器
文件頁數(shù)： 69/131頁
文件大?。?/td> 1297K
代理商： M37272MA-055SP
69
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37272M6H/M8H/MAH/MFH
–
XXXSP/FP
M37272E8SP/FP, M37272EFSP/FP
MITSUBISHI MICROCOMPUTERS
Rev 1.0
Fig. 8.11.10 Block Diagram of Dot Size Control Circuit
8.11.2 Dot Size
The dot size can be selected by a block unit. The dot size in vertical
direction is determined by dividing H
SYNC
in the vertical dot size con-
trol circuit. The dot size in horizontal is determined by dividing the
following clock in the horizontal dot size control circuit : the clock
gained by dividing the OSD clock source (data slicer clock, OSC1) in
the pre-divide circuit. The clock cycle divided in the pre-divide circuit
is defined as 1T
C
.
The dot size of each block is specified by bits 2 to 4 of the block
control register i.
Refer to Figure 8.11.4 (the structure of the block control register).
The block diagram of dot size control circuit is shown in Figure 8.11.10.
Fig. 8.11.11 Definition of Dot Sizes
D
a
t
a
s
l
i
c
e
r
c
l
o
c
k
H
S
Y
N
C
O
S
C
1
O
C
3
o
r
O
C
4
Synchronous
circuit
C
r
y
c
l
e
3
P
e
-
d
i
v
i
d
e
c
i
r
c
u
i
t
C
=
l
o
1
c
T
C
k
c
y
c
l
e
Horizontal dot size
control circuit
Vertical dot size
control circuit
O
S
D
c
o
n
t
r
o
l
c
i
r
c
u
i
t
Cycle
2
“
0
”
“
1
”
B
C
i
4
Note:
To use data slicer clock, set bit 0 of data slicer control register 1 to
“
1.
”
1 dot
Scanning line of F1(F2)
Scanning line of F2(F1)
1/2H
1H
2H
3H
3T
C
2T
C
1T
C
1T
C
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