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參數(shù)資料
| 型號(hào)： | PNX8510 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Analog companion chip |
| 中文描述： | 模擬伴隨芯片 |
| 文件頁(yè)數(shù)： | 19/92頁(yè) |
| 文件大?。?/td> | 3064K |
| 代理商： | PNX8510 |
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Philips Semiconductors
PNX8510/11
Analog companion chip
Product data
Rev. 04 – 12 January 2004
19 of 92
9397 750 12612
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Programming flexibility includes NTSC-M, PAL-B, SECAM main standards as well as
other variations. A number of possibilities are provided for setting different video
parameters, such as:
Black and blanking level control
Color subcarrier frequency
Variable burst amplitude
The sync generator generates all the signals required to control the signal
processing, provide the composite sync signal, insert the color burst, etc.
The encoder includes a cross-color reduction filter to reduce cross talk between the
luminance and chrominance channels. In the CVBS signal, the signal amplitude is
reduced by 15/16 to avoid overflow.
7.1.9
Luminance and Chrominance Processing
The Y processing provides a high performance 5 MHz lowpass filter. It adjusts the
level range according to the standard and inserts the sync and blanking pulses. The
insertion stage generates the correct pulse shapes. No further processing is
necessary of the D/A converters for this purpose.
Chroma processing operates on the baseband signals as long as possible. At first,
the signal amplitudes are adjusted and the burst is inserted. Afterwards the signals
are passed through a 1.4 MHz lowpass filter. This filter can be switched to a higher
cut-off frequency to allow more chroma bandwidth with S-Video. The quadrature
modulator uses a DTO (Discrete Time Oscillator) with 32-bit resolution for the
subcarrier generation. Even with this high resolution, the DTO cannot generate the
carrier locked to the line frequency as the standards require without further means.
So the sync generator is able to reset the DTO periodically. This feature is controlled
by the PHRES programming bits. These modes may only be switched on if the
encoder is programmed to generate a standard signal; they will not work in
non-interlaced mode.
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| PNX8511 | Analog companion chip |
| PNX8526 | Programmable source decoder with integrated peripherals |
| PNX8526EH | Programmable source decoder with integrated peripherals |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PNX8510HW/B1 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Analog companion chip |
| PNX8511 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Analog companion chip |
| PNX8511HW/B1 | 功能描述:視頻 IC ANALOG BACKEND COMPANION RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| PNX8511HW/B1,557 | 功能描述:視頻 IC ANALOG BACKEND RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| PNX8526 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Programmable source decoder with integrated peripherals |
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