參數(shù)資料
型號： M37150M8-XXXFP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 8.95 MHz, MICROCONTROLLER, PDSO42
封裝： 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42
文件頁數(shù)： 114/142頁
文件大小： 1712K
代理商： M37150M8-XXXFP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37150M6/M8/MA/MC/MF-XXXFP, M37150EFFP
MITSUBISHI MICROCOMPUTERS
72
Rev. 1.0
8.11.4 Field Determination Display
When displaying a block with vertical dot size of 1/2H, the differ-
ences in the synchronizing signal waveform of the interlacing system
determine whether the field is odd or even. The dot lines 0 and 1
(refer to Figure 8.11.15), corresponding to each field, are 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 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 previous
time, it is regarded as an even field. When the time is shorter, it is
regarded as an 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 8.11.15).
However, the field determination flag read out from the CPU is fixed
to “0” for even fields or “1” for odd fields, regardless of bit 5.
Fig. 8.11.14 I/O Polarity Control Register
0
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
5
Display dot line selection
bit (PC5) (See note)
0
6
Field determination flag
(PC6)
0 : Even field
1 : Odd field
1
4, 7
0
VSYNC input polarity
switch bit (PC1)
RW
R
RW
Fix these bits to 0.
Note: Refer to the corresponding figure. 8.11.15
0
相關(guān)PDF資料
PDF描述
M37150MF-XXXFP 8-BIT, MROM, 8.95 MHz, MICROCONTROLLER, PDSO42
M37150MC-XXXFP 8-BIT, MROM, 8.95 MHz, MICROCONTROLLER, PDSO42
M37151MC-XXXFP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42
M37151MF-XXXFP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42
M37151M6-XXXFP 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37150MA 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37150MA-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37150MC 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37150MC-XXXFP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37150MF 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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