TDA6812-5 Datasheet | Siemens Semiconductor Group

Features .. q High quality stereo signal processing High S/N ratio I2C Bus Clipping detector and clock generator NICAM or AM sound inputs Volume control Universal audio interface for DOLBY, EQUALIZER, SURROUND SOUND features q Multiplex 3-SCART connections q Independent headphones q q q q q q P-DIP-40-2 Type TDA 6812-5 Ordering Code Q67000-A5127 Package P-DIP-40-2 TDA 6812-5 is a plete system for stereo TV-sound, controlled on an I2C Bus. The device is made up of three functional blocks. 1. Stereo Processing with High Quality (better than DIN 45500; suitable for NICAM and CD for G-standard with I2C-controlled crosstalk pensation; selectable gain 0/6 d B a) Three stereo AF-inputs b) Random switching of all inputs to all outputs c) Stereo SCART-interface d) Stereo loudspeaker signal section with volume precontrol, treble/bass control, enlargement of quasi-stereo/stereo sound base, separate L/R-volume control, equalizer interface after tone control e) Stereo headphones signal section with Ch1/Ch2 and volume control 2. TV-Identification-Signal Decoder a) Active pilot-tone filter b) Phase-independent rectifier with very narrow bandwidth for identification-signal decoding c) Digital integrator for noise rejection d) Multiplexer for cyclic scanning for stereo or dual-sound identification e) Externally synchronized PLL for reference-signal generation: synchronization with line sync pulse or 62.5-k Hz clock, integrated crystal oscillator and 4-MHz crystal, or with external 4-MHz timing signal TDA 6812-5 3. Control a) I2C Bus interface with listen/talk function b) Control of entire audio processing c) Reading of clipping detector d) Control of identification-signal decoder e) Reading of identification-signal decoder f) Test modes .. Pin Functions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Function AF-input mono, left, sound 1 (adjustable) Bias AF-operating point AF-input, right, sound 2 N.C. 54-k Hz input 54-k Hz filter...