File name TDA935x-6x-8xN1.pdfINTEGRATED CIRCUITS
DEVICE SPECIFICATION DATA SHEET
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TDA935X/6X/8X series TV signal processor-Teletext decoder with embedded µ-Controller
Preliminary Device Specification File under Integrated Circuits, Version: 1.3 1999 Sep 28 Previous date: 1999 Aug 26
Philips Semiconductors
Preliminary Device Specification
TV signal processor-Teletext decoder with embedded µ-Controller
GENERAL DESCRIPTION The various versions of theTDA935X/6X/8X series combine the functions of a TV signal processor together with a µ-Controller and US Closed Caption decoder. Most versions have a Teletext decoder on board. The Teletext decoder has an internal RAM memory for 1or 10 page text. The ICs are intended to be used in economy television receivers with 90° and 110° picture tubes. The ICs have supply voltages of 8 V and 3.3 V and they are mounted in S-DIP envelope with 64 pins. The features are given in the following feature list. The differences between the various ICs are given in the table on page 4.
TDA935X/6X/8X series
FEATURES TV-signal processor · Multi-standard vision IF circuit with alignment-free PLL demodulator · Internal (switchable) time-constant for the IF-AGC circuit · A choice can be made between versions with mono intercarrier sound FM demodulator and versions with QSS IF amplifier. · The mono intercarrier sound versions have a selective FM-PLL demodulator which can be switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz). The quality of this system is such that the external band-pass filters can be omitted. · Source selection between `internal' CVBS and external CVBS or Y/C signals · Integrated chrominance trap circuit · Integrated luminance delay line with adjustable delay time · Asymmetrical `delay line type' peaking in the luminance channel · Black stretching for non-standard luminance signals · Integrated chroma band-pass filter with switchable centre frequency · Only one reference (12 MHz) crystal required for the µ-Controller, Teletext- and the colour decoder · PAL/NTSC or multi-standard colour decoder with automatic search system · Internal base-band delay line 1999 Sep 28 2 · RGB control circuit with `Continuous Cathode Calibration', white point and black level off set adjustment so that the colour temperature of the dark and the light parts of the screen can be chosen independently. · Linear RGB or YUV input with fast blanking for external RGB/YUV sources. The Text/OSD signals are internally supplied from the µ-Controller/Teletext decoder · Contrast reduction possibility during mixed-mode of OSD and Text signals · Horizontal synchronization with two control loops and alignment-free horizontal oscillator · Vertical count-down circuit · Vertical driver optimized for DC-coupled vertical output stages · Horizontal and vertical geometry processing · Horizontal and vertical zoom function for 16 : 9 applications · Horizontal parallelogram and bow correction for large screen picture tubes · Low-power start-u | 