This post explains for the TV Processor.
The Part Number is TDA8842.
The function of this semiconductor is I2C-bus Controlled TV Processor.
The package is DIP 56 Pin, QFP 64 Pin type
Manufacturer: Philips, NXP Semiconductor
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Description
The TDA8842 is I2C-bus controlled PAL / NTSC / SECAM TV processor.
The various versions of the TDA884X/5X series are I2C-bus controlled single chip TV processors which are intended to be applied in PAL, NTSC, PAL/NTSC and multi-standard television receivers. The N2 version is pin and application compatible with the N1 version, however, a new feature has been added which makes the N2 more attractive. The IF PLL demodulator has been replaced by an alignment-free IF PLL demodulator with internal VCO (no tuned circuit required).
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Features
1. Multi-standard vision IF circuit with an alignment-free PLL demodulator without external components
2. Alignment-free multi-standard FM sound demodulator (4.5 MHz to 6.5 MHz)
3. Audio switch
4. Flexible source selection with CVBS switch and Y(CVBS)/C input so that a comb filter can be applied
5. Integrated chrominance trap circuit
6. Integrated luminance delay line
7. Asymmetrical peaking in the luminance channel with a (defeatable) noise coring function
8. Black stretching of non-standard CVBS or luminance signals
Other data sheets are available within the file:
TDA8840, TDA8840H, TDA8841, TDA8843, TDA8841H, TDA8842,
TDA8844, TDA8842H, TDA8854H, TDA8846, TDA8846A, TDA8847
TDA8842 PDF Datasheet
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