參數(shù)資料
型號： M37274MA-052SP
廠商： Mitsubishi Electric Corporation
英文描述： PHOTO SM DETECTOR
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)： 95/147頁
文件大?。?/td> 2042K
代理商： M37274MA-052SP
95
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274EFSP
PRELIMINARY
Notice: This is not a final specification.
Some paramentic limits are subject to change.
MITSUBISHI MICROCOMPUTERS
(13) Scan Mode
M37274EFSP has the bi-scan mode for corresponding to H
SYNC
of
double speed frequency. In the bi-scan mode, the vertical start dis-
play position and the vertical size is two times as compared with the
normal scan mode. The scan mode is selected by bit 1 of the OSD
control register (refer to Figure 64).
(14) Window Function
This function sets the top and bottom boundary of display limit on a
screen. The window function is valid only in the CC mode. The top
boundary is set by window H registers 1 and 2. The bottom bound-
ary is set by window L registers 1 and 2. This function is turned on
and off by bit 5 of the OSD control register (refer to Figure 64).
The window H registers 1 and 2 is shown in Figures 96 and 97, of
window L registers 1 and 2 is shown in Figures 98 and 99.
Notes 1:
Set values except “00
16
” and “01
16
” to the window H regis-
ter 1 when the window H register 2 is “00
16
.”
2:
Set the register value fit for the following condition :
(WH1 + WH2) < (WL1 + WL2)
Bit 1 of OSD control register
Vertical display start position
Vertical dot size
Table 18. Setting for Scan Mode
Normal Scan
0
Value of vertical position register
1H
1T
C
1/2H
1T
C
1H
2T
C
2H
3T
C
3H
Bi-Scan
1
Value of vertical position register
2H
1T
C
1H
1T
C
2H
2T
C
4H
3T
C
6H
Scan Mode
Parameter
Fig. 95. Example of Window Function
EXOSD mode
Window
F
G H
I
J
CC mode
K
L
M N
O
CC mode
P
Q R
S
T
CC mode
OSD mode
Bottom
boundary
of window
Top
boundary
of window
Screen
A
B
C
D
E
U
V
W X
Y
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