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參數(shù)資料
| 型號： | M37272MFH |
| 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)： | 88/131頁 |
| 文件大?。?/td> | 1297K |
| 代理商： | M37272MFH |
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88
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
8.11.13 OSD Output Pin Control
The OSD output pins R, G, B and OUT1 can also function as ports
P5
2
–P5
5
. Set corresponding bit of the OSD port control register (ad-
dress 00CB
16
) to “0” to specify these pins as OSD output pins, or set
it to “1” to specify it as a general-purpose port P5.
The OUT2 can also function as port P1
0
. Set bit 0 of the port P1
direction register (address 00C3
16
) to “1” (output mode). After that,
set bit 7 of the OSD port control register to “1” to specify the pin as
OSD output pin, or set it to “0” to specify as port P1
0
.
The input polarity of the H
SYNC
, V
SYNC
and output polarity of signals
R, G, B, OUT1 and OUT2 can be specified with the I/O polarity con-
trol register (address 00D8) . Set a bit to “0” to specify positive polar-
ity; set it to “1” to specify negative polarity (refer to Figure 8.11.13).
The structure of the OSD port control register is shown in Figure
8.11.28.
Fig. 8.11.28 OSD Port Control Register
b7 b6 b5 b4 b3 b2 b1 b0
OSD port control register (PF) [Address 00CB
16
]
B
Name
Functions
After reset
R W
OSD Port Control Register
0
2
0
3
0 : G signal output
1 : Port P5
3
output
0
0
Fix these bits to 0.
R
R W
R W
R W
0, 1
Port P5
3
output signal
selection bit (PF3)
4
0 : B signal output
1 : Port P5
4
output
0
R W
Port P5
4
output signal
selection bit (PF4)
0
R W
0 : R signal output
1 : Port P5
2
output
Port P5
2
output signal
selection bit (PF2)
5
0 : OUT1 signal output
1 : Port P5
3
output
Port P5
5
output signal
selection bit (PF5)
7
0 : Port P1
0
output
1 : OUT2 signal output
Port P1
0
output signal
selection bit (PF7)
0
0
0
Nothing is assigned. This bit is write disable bit.
When this bit is read out, the value is 0.
R
6
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