參數(shù)資料
型號： M37272MAH-XXXSP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42
封裝： 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁數(shù)： 103/132頁
文件大小： 1736K
代理商： M37272MAH-XXXSP
71
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
8.11.4 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 8.11.14) corresponding to the field is displayed alter-
nately.
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 VSYNC control signal (refer to Figure
8.11.6) in the microcomputer and then comparing this time with the
time of the previous field. When the time is longer than the compar-
ing time, it is regarded as even field. When the time is shorter, it is
regarded as odd field
The contents of this field can be read out by the field determination
flag (bit 6 of the I/O polarity control register at address 00D816). A dot
line is specified by bit 5 of the I/O polarity control register (refer to
Figure 8.11.14).
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 5.
Fig. 8.11.13 I/O Polarity Control Register
0 : “
” at even field
“
” at odd field
1 : “
” at even field
“
” at odd field
b7 b6 b5 b4 b3 b2 b1 b0
I/O polarity control register (PC) [Address 00D8 16]
B
Name
Functions
After reset R W
I/O Polarity Control Register
0HSYNC input polarity
switch bit (PC0)
0 : Positive polarity input
1 : Negative polarity input
0
1
0 : Positive polarity input
1 : Negative polarity input
0
2
R, G, B output polarity
switch bit (PC2)
0 : Positive polarity output
1 : Negative polarity output
0
3
OUT1 output polarity
switch bit (PC3)
0 : Positive polarity output
1 : Negative polarity output
0
4
OUT2 output polarity
switch bit (PC4)
0 : Positive polarity output
1 : Negative polarity output
0
5
Display dot line selection
bit (PC5) (See note)
0
6
Field determination flag
(PC6)
0 : Even field
1 : Odd field
1
7
0
VSYNC input polarity
switch bit (PC1)
RW
R —
RW
Fix this bit to “0.”
Note: Refer to the corresponding figure (8.11.14).
0
相關(guān)PDF資料
PDF描述
M37272M6H-XXXFP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42
M37273EFSP 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP52
M37273E8SP 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP52
M37273MF-XXXSP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP52
M37273EFSP 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP52
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37272MA-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
M37272MFH 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
M37272MFH-XXXFP 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
M37272MFH-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
M37273E8SP 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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