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參數資料
| 型號： | M37272M8-122SP |
| 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： | 70/131頁 |
| 文件大?。?/td> | 1297K |
| 代理商： | M37272M8-122SP |
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70
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
b7 of raster color
register
OSD control
register
I/O
Port
1
1
0
8.11.3 Clock for OSD
As a clock for display to be used for OSD, it is possible to select one
of the following 3 types.
Data slicer clock output from the data slicer (approximately 26 MHz)
OSC1 clock supplied from the pins OSC1 and OSC2
Clock from the ceramic resonator or the LC oscillator from the pins
OSC1 and OSC2
This OSD clock for each block can be selected by the following bits
: bit 7 of the raster color register (address 00D9
16
), bits 3 to 6 of the
clock source control register (addresses 00D0
16
). A variety of char-
acter sizes can be obtained by combining dot sizes with OSD clocks.
When not using the pins OSC1 and OSC2 for the OSD clock I/O
pins, the pins can be used as sub-clock I/O pins or port P2.
Fig. 8.11.12 Block Diagram of OSD Selection Circuit
Table 8.11.2 Setting for P2
6
/OSC1/X
CIN
, P2
7
/OSC2/X
COUT
OSD clock
Function
Register
I/O Pin
0
1
0
Sub-clock
I/O Pin
0
0
0
b6
b5
“
0
”
“
10
”
“
0
”
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Data slicer clock
(See note)
OSC1 clock
Ceramic
·
LC
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5
“
1
”
“
1
”
OC3
OC4
C
m
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OSD mode block
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