參數(shù)資料
型號： M37151
廠商： Renesas Technology Corp.
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)： 53/139頁
文件大?。?/td> 1491K
代理商： M37151
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37151M6/M8/MA/MC/MF-XXXFP, M37151EFFP
MITSUBISHI MICROCOMPUTERS
52
Rev 1.0
8.10.2 Clamping Circuit and Low-pass Filter
The clamp circuit clamps the sync chip part of the composite video
signal input from the CV
IN
pin. The low-pass filter attenuates the noise
of the clamped composite video signal. The CV
IN
pin to which com-
posite video signal is input requires an external capacitor (0.1
μ
F)
coupling. Pull down the CV
IN
pin with a resistor of hundreds of kilo-
ohms to 1 M
. In addition, we recommend installing a simple low-
pass filter externally, using a resistor and a capacitor at the CV
IN
pin
(refer to Figure 8.10.1).
8.10.3 Sync Slice Circuit
This circuit takes out a composite sync signal from the output signal
of the low-pass filter.
8.10.4 Synchronous Signal Separation Circuit
This circuit separates a horizontal synchronous signal and a vertical
synchronous signal from the composite sync signal taken out in the
sync slice circuit.
(1) Horizontal Synchronous Signal (H
sep
)
A one-shot horizontal synchronizing signal Hsep is generated at
the falling edge of the composite sync signal.
(2) Vertical Synchronous Signal (V
sep
)
As a V
sep
signal generating method, it is possible to select one of
the following 2 methods by using bit 4 of data slicer control regis-
ter 2 (address 00E1
16
).
Method 1
The LOW level width of the composite sync signal is
measured. If this width exceeds a certain time, a V
sep
signal is generated in synchronization with the rising
of the timing signal immediately after this LOW level.
Method 2
The LOW level width of the composite sync signal is
measured. If this width exceeds a certain time, it is
detected whether a falling of the composite sync sig-
nal exits or not in the LOW level period of the timing
signal immediately after this LOW level. If a falling
exists, a V
sep
signal is generated in synchronization
with the rising of the timing signal (refer to Figure
8.10.6).
Figure 8.10.6 shows a V
sep
generating timing. The timing signal shown
in the figure is generated from the reference clock which the timing
generating circuit outputs.
Reading bit 5 of data slicer control register 2 permits determinating
the shape of the V-pulse portion of the composite sync signal. As
shown in Figure 8.10.7, when the A level matches the B level, this bit
is “0.” In the case of a mismatch, the bit is “1.”
Fig. 8.10.6 Vsep Generating Timing (method 2)
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相關(guān)PDF資料
PDF描述
M37273MFH-0515P SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37273MFH-051SP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37273MFH-052SP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37273MFH-XXXSP SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
M37273MFH SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37151EFFP 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
M37151EFSS 功能描述:DEV MCU/8BIT CMOS EMULATION CHIP RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
M37151ERSS 制造商:Renesas Electronics Corporation 功能描述:DEV MCU/8BIT CMOS EMULATION CHIP - Bulk
M37151M6 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER
M37151M6_02 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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