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QS7779PM Datasheet(PDF) 1 Page - Nippon Precision Circuits Inc

Part No. QS7779PM
Description  3D Stereo Enhancement and 3D Virtual Stereo Surround with Dolby Pro Logic and Mixed DVD (AC-3) Decoder
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Manufacturer  NPC [Nippon Precision Circuits Inc]
Direct Link  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

QS7779PM Datasheet(HTML) 1 Page - Nippon Precision Circuits Inc

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QS7779PM/CM
NIPPON PRECISION CIRCUITS—1
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 virtu-
alization 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 virtual-
ized surround sounds with two speakers.
FEATURES
s
Capable of decoding Dolby Surround materials
such as Dolby Pro Logic or other matrix surround
encoded materials (DVD/AC
−3)
s
Virtualized surround sound with two speakers
s
3D stereo sound enhancement
s
Two enhanced levels
s
Parallel and serial digital interface for mode con-
trol
• QS7779CM for I2C 2 control pins serial inter-
face (Data, Clock)
• QS7779PM for three-wire serial interface
(Data, Clock and Strobe)
s
Supply voltage (analog): 5 to 13V
Supply voltage (digital): 4.5 to 5.5V
s
24-pin SSOP packaging
APPLICATIONS
s
DVD, Laser disk player
s
Audio systems including TV, Radio and VCR
s
Computer-based multimedia products, including
sound cards and powered loudspeakers
PINOUT(Top view)
QS7779PM
QS7779CM
Using these products does not require any Dolby certifications.
ORDERING INFORMATION
I2C bus is a registered trademar k of Philips Electronics N.V.
Dolby and the double-D symbol are registered trademar ks of Dolby Laboratories Licensing Corporation.
1
13
24
12
QXAC3
QXAC2
QXAC1
RIN
LIN
COUT
CIN
QXAC4
VCC
QXBC1
QXBC2
QXBC3
QXBC4
ROUT
VREFIN
LOUT
VREFOUT
VREF
GND
SPRD(SCL)
MUTE(STRB)
VDD
P/S
BYP(SDA)
1
13
24
12
QXAC3
QXAC2
QXAC1
RIN
LIN
COUT
CIN
QXAC4
VCC
QXBC1
QXBC2
QXBC3
QXBC4
ROUT
VREFIN
LOUT
VREFOUT
VREF
GND
SPRD(SCL)
MUTE
VDD
P/S
BYP(SDA)
D e vice
P a ck ag e
QS7779PM
24-pin SSOP
QS7779CM
24-pin SSOP


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