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參數(shù)資料
| 型號： | TVP5022 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP80 |
| 封裝： | POWER, PLASTIC, TQFP-80 |
| 文件頁數(shù)： | 16/91頁 |
| 文件大?。?/td> | 411K |
| 代理商： | TVP5022 |
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2–7
Input Signal
Output Signal
VI
VO
Coring Threshold
t
Figure 2–9. Transfer Curve of Coring Circuit
2.2.3
Chrominance Processing
A quadrature demodulator removes the U and V components from the composite signal in composite video
mode, or the U and V components from the chroma signal in S-video mode. The U/V signals then pass
through the gain control stage for chroma saturation adjustment. The U and V components pass through
a comb filter to eliminate cross-chrominance noise. Phase shifting the digitally-controlled oscillator controls
hue. The block includes an automatic color killer (ACK) circuit that suppresses the chroma output when the
color burst of the video signal is weak or not present.
2.2.4
Clock Circuits
An internal line-locked PLL generates the system and pixel clocks. Figure 2–10 shows a simplified clock
circuit diagram. The digital control oscillator (DCO) generates the reference signal for the horizontal PLL.
The DCO outputs a signal that is fed to the D/A converter. The D/A converter outputs a line-locked clock
signal (LCLK). The DCO requires a 26.8 or a 24.576 MHz clock as an input. The input for the DCO may enter
terminal XTAL1 as a TTL level on terminal XTAL1 or a 26.8 or 24.576 MHz crystal connected across
terminals XTAL1 and XTAL2. Figure 2–11 shows the various reference clock configurations.
Lowpass Filter
Sync Detector
Phase
Detector
Loop
Filter
Line-Locked
Clock
PLL
Digital
Control
Oscillator
Crystal
Clock
Generator
DAC
Clock
Generator
Circuit
SCLK
PCLK
XTL1
XTL2
Digitized
Video
Figure 2–10. Clock Circuit Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TVP5031PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5040CPFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5040PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5041PFP | COLOR SIGNAL DECODER, PQFP80 |
| TVP5146M1PFP | COLOR SIGNAL DECODER, PQFP80 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP5031 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:NTSC/PAL VIDEO DECODER |
| TVP5031CPFP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Color Decoder Circuit |
| TVP5031PFP | 功能描述:IC 9-BIT VIDEO DECODER 80-QFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編碼器，解碼器，轉(zhuǎn)換器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 26/Apr/2011 標(biāo)準(zhǔn)包裝:1 系列:- 類型:編碼器 應(yīng)用:DVB-S.2 系統(tǒng) 電壓 - 電源，模擬:- 電壓 - 電源，數(shù)字:- 安裝類型:- 封裝/外殼:模塊 供應(yīng)商設(shè)備封裝:模塊 包裝:散裝 其它名稱:Q4645799 |
| TVP5031TQFP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:NTSC/PAL VIDEO DECODER |
| TVP5040 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:NTSC/PAL Digital Video Decoder With Macrovision Detection |
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