UPC1892_datasheet.pdfVIP

The μPC1892 is a specific IC to reproduce surround sound by using phase shifters and a signal matrix. The μPC1892 provides wide sound with two speakers, and rich stereophonic sound with three speakers. In case of stereo signal, the μPC1892 has the movie mode to reproduce sense of immediacy (for movie) and the music mode to emphasize vocal sound (for music), and it has the simulated mode to make monaural signal into wide deep sound. The modes can be selected freely by using 2-bit parallel control pins. In addition to this function reproducing surround sound, the μPC1892 has a general sound processor that has volume, balance, bass and treble control. So it is capable of reducing installation area. All functions for processing signals of base band sound are provided on one chip. FEATURES ? Three surround modes are available: movie, music and simulated ? Built in volume and balance control (All control voltage: 0 V to 5 V) ? Built in tone control (bass, treble) (All control voltage: 0 V to 5 V) ? Built in L+R output for woofer SP ? μPC1892CT-02: The volume and balance attenuation are bigger than μPC1892CT. APPLICATION ? TV ORDERING INFORMATION Part Number Package μPC1892CT 30-pin plastic shrink DIP (400 mil) μPC1892CT-02 30-pin plastic shrink DIP (400 mil) ? 1991, 1992, 1995 DATA SHEET MATRIX SURROUND SOUND PROCESSOR WITH SOUND PROCESSOR μPC1892 Bipolar Analog Integrated Circuit Document No. S10650EJ3V0DS00 (3rd edition) (Previous No. ID-2902) Date Published October 1995 P Printed in Japan The information in this document is subject to change without notice. μPC1892 2 SYSTEM BLOCK DIAGRAM (TV) Digital tuning controller PD17002μ PD17052μ PD17053μ PC1852μ L R μ PC2800Aμ PC2801Aμ Tuner PIFSIF Color output CRT Vertical output Color, intensity and defrecting signal processor Remote control reception amplifier PIN photo diode Matrix surround sound processor US MTS PC1310 PC1892 μ PC1316Cμ Power amplifier CRT μ P C 1 8 9 23 B L O C K D I A G R A M HPF 28 29 2 3 4 5 30 22