QS7779CM

QS7779PM/CM NIPPON PRECISION CIRCUITS INC. 3D Stereo Enhancement and 3D Virtual Stereo Surround with Dolby Pro Logic and Mixed DVD (AC-3) Decoder OVERVIEW The QS7779PM/CM is an audio processor IC which implements a decoder for stereo matrix encoded source materials such as the Dolby Surround Pro Logic and mixed DVD (AC−3) with surround virtualization using QSound™ technology developed and licensed by QSound Labs, Inc. This chip produces enhanced stereo sound for a stereo input signal and if the input signal contains matrix encoded surround sound, the chip decodes it and produces 3D virtualized surround sounds with two speakers. FEATURES s s s s s Capable of decoding Dolby Surround materials such as Dolby Pro Logic or other matrix surround encoded materials (DVD/AC−3) Virtualized surround sound with two speakers 3D stereo sound enhancement Two enhanced levels Parallel and serial digital interface for mode control s s QS7779CM for I2C 2 control pins serial interface (Data, Clock) QS7779PM for three-wire serial interface (Data, Clock and Strobe) Supply voltage (analog): 5 to 13V Supply voltage (digital): 4.5 to 5.5V 24-pin SSOP packaging APPLICATIONS s s DVD, Laser disk player Audio systems including TV, Radio and VCR s Computer-based multimedia products, including sound cards and powered loudspeakers PINOUT(Top view) QS7779PM QS7779CM QXAC3 QXAC2 QXAC1 1 24 QXAC4 VCC QXBC1 QXAC3 QXAC2 QXAC1 RIN LIN COUT CIN VREFIN VREFOUT VREF GND SPRD(SCL) 1 24 QXAC4 V...