参数资料
型号: M37274MA-XXXSP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PDIP52
封装: 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-52
文件页数: 108/131页
文件大小: 2049K
代理商: M37274MA-XXXSP
78
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274MA-XXXSP
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
paramentic
limits
are
subject
to change.
MITSUBISHI MICROCOMPUTERS
(13) Scan Mode
M37271MF-XXXSP has the bi-scan mode for corresponding to HSYNC
of double speed frequency. In the bi-scan mode, the vertical start
display 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 55).
(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 55).
The structure of window H registers 1 and 2 is shown in Figure 86,
the structure of window L registers 1 and 2 is shown in Figure 87.
Notes 1: Set values except “0016” and “0116” to the window H regis-
ter 1 when the window H register 2 is “0016.”
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 20. Setting for Scan Mode
Normal Scan
0
Value of vertical position register ! 1H
1TC ! 1/2H
1TC ! 1H
2TC ! 2H
3TC ! 3H
Bi-Scan
1
Value of vertical position register ! 2H
1TC ! 1H
1TC ! 2H
2TC ! 4H
3TC ! 6H
Scan Mode
Parameter
Fig. 85. Example of Window Function
EXOSD mode
Window
FG H
I
J
CC mode
KL
M N O
CC mode
PQ R
S
T
CC mode
OSD mode
Bottom
boundary
of window
Top
boundary
of window
Screen
A BCD E
UV
W X
Y
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