QS7779PM Datasheet

IC型号：
QS7779PM
PDF描述：
3D Stereo Enhancement and 3D Virtual Stereo Surround with Do...
文件大小：
115.55KB
PDF页数：
11页
芯片厂家：
NPC

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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

鈭?/div>

3) with surround virtu-

alization using QSound

鈩?/div>

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 virtual-

ized surround sounds with two speakers.

FEATURES

Capable of decoding Dolby Surround materials

such as Dolby Pro Logic or other matrix surround

encoded materials (DVD/AC

鈭?/div>

Virtualized surround sound with two speakers

3D stereo sound enhancement

Two enhanced levels

Parallel and serial digital interface for mode con-

trol

鈥?QS7779CM for I

C 2 control pins serial inter-

face (Data, Clock)

鈥?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

DVD, Laser disk player

Audio systems including TV, Radio and VCR

Computer-based multimedia products, including

sound cards and powered loudspeakers

PINOUT

(Top view)

QS7779PM

QS7779CM

QXAC3

QXAC2

QXAC1

QXAC4

VCC

QXBC1

QXAC3

QXAC2

QXAC1

RIN

LIN

COUT

CIN

VREFIN

VREFOUT

VREF

GND

SPRD(SCL)

QXAC4

VCC

QXBC1

QXBC2

QXBC3

QXBC4

ROUT

LOUT

MUTE

VDD

P/S

QS7779PM

RIN

LIN

COUT

CIN

VREFIN

VREFOUT

VREF

GND

SPRD(SCL)

QXBC2

QXBC3

QXBC4

ROUT

LOUT

MUTE(STRB)

VDD

P/S

BYP(SDA)

QS7779CM

BYP(SDA)

Using these products does not require any Dolby certi铿乧ations.

ORDERING INFORMATION

D e vice

QS7779PM

QS7779CM

P ackag e

24-pin SSOP

C bus is a registered tra d e m a r k of Philips Electronics N.V.

Dolby and the double-D symbol are registered tra d e m a r ks of Dolby Laboratories Licensing Corporation.

NIPPON PRECISION CIRCUITS鈥?

型号

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