VARIOUS PARAMETERS OF INTEGRATED CIRCUIT A: Pin functions of N301ġ STAND BY I/O Power control & Check, On=Hi-Z(input),Off=L(output)Ģ0 AVL/EWD Out Automatic volume leveling/East-West drive outputĢ3 IF1 In Input terminals for IF signals.Ģ4 IF2 In Input terminals for IF signals.Ģ8 AUDEEM/SIF1 Audio deemphasis or SIF input 1Ģ9 DECSDEM/SIF2 Decoupling sound demodulator or SIF input 2ģ1 SNDPLL/SIF AGC Narrow band PLL filter/AGC sound IFģ2 AVL/REFO Automatic Volume Levelling / Subcarrier reference outputģ4 FBISO Flyback input / sand castle outputģ5 AUDEXT/QSSO External audio input / QSS outputģ8 IFVO/SVO Out IF video output / selected CVBS outputģ9 VP1 Main supply voltage TV-processor(+8V)Ĥ4 AUDOUT/AMOUT Out Audio output /AM audio output (volume controlled)Ĥ9 BCLIN Beam current limiter input/(V-guard input, note2)ĥ0 BLANKING Blank current input / (V-guard input, note2)ĥ4 VDDA Analog supply of Teletext decoder and digital supply of TV-processor (3.3V)ĥ9 XTAL OUT Out Crystal oscillator outputĦ1 VDDP Digital supply to periphery(+3.3V)Ħ2 AV1 Out AV switch control signal 1 outputĦ3 AV2 Out AV switch control signal 2 outputĦ4 IRIN In Remote controller signal input The ICs have supply voltages of 8 V and 3.3 V and they are mounted in S-DIP envelope with 64 pins. The ICs are intended to be used in economy television receivers with 90° and 110° picture tubes. The Teletext decoder has an internal RAM memory for 1or 10 page text. Most versions have a Teletext decoder on board. The various versions of the TDA9381 series combine the functions of a TV signal processor together with a m-Controller and US Closed Caption decoder. Function : TV signal processor-Teletext decoder

Tda9381 datasheet pdf