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參數(shù)資料
| 型號： | M37270MF-167SP |
| 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)： | 53/94頁 |
| 文件大?。?/td> | 1551K |
| 代理商： | M37270MF-167SP |
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MITSUBISHI MICROCOMPUTERS
M37270MF-XXXSP
M37270EF-XXXSP, M37270EFSP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
53
(5) Field Determination Display
To display the block with vertical dot size of 1/2H, whether an even
field or an odd field is determined through differences in a synchro-
nizing signal waveform of interlacing system. The dot line 0 or 1 (re-
fer to Figure 62) corresponding to the field is displayed alternately.
In the following, the field determination standard for the case where
both the horizontal sync signal and the vertical sync signal are nega-
tive-polarity inputs will be explained. A field determination is deter-
mined by detecting the time from a falling edge of the horizontal sync
signal until a falling edge of the V
SYNC
control signal (refer to Figure
54) in the microcomputer and then comparing this time with the time
of the previous field. When the time is longer than the comparing
time, it is regarded as even field. When the time is shorter, it is re-
garded as odd field
The contents of this field can be read out by the field determination
flag (bit 7 of the I/O polarity control register at address 0217
16
). A dot
line is specified by bit 6 of the I/O polarity control register (refer to
Figure 62).
However, the field determination flag read out from the CPU is fixed
to “0” at even field or “1” at odd field, regardless of bit 6.
Fig. 61. Structure of I/O polarity control register
0
7
I/O polarity control register
(PC : address 0217
16
)
H
SYNC
input polarity switch bit
0 : Positive polarity input
1 : Negative polarity input
OUT2 output polarity switch bit
0 : Positive polarity output
1 : Negative polarity output
V
SYNC
input polarity switch bit
0 : Positive polarity input
1 : Negative polarity input
R/G/B output polarity switch bit
0 : Positive polarity output
1 : Negative polarity output
I1, I2 output polarity switch bit
0 : Positive polarity output
1 : Negative polarity output
OUT1 output polarity switch bit
0 : Positive polarity output
1 : Negative polarity output
Display dot line selection bit (Note)
AA
Field determination flag
0 : Even field
1 : Odd field
Note :
Refer to Figure 62.
0 : “ ” at even field
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PDF描述 |
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| M37270MF-168SP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37271EF-XXXSP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37271MF-XXXSP | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M37270MF-168SP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37270MF-XXXSP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37271EF | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
| M37271EFSP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER |
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