QS7785PF View Datasheet(PDF) - Nippon Precision Circuits
Part Name
Description
Manufacturer
QS7785PF Datasheet PDF : 15 Pages
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NIPPON PRECISION CIRCUITS INC.
QS7785PF/CF
3D 2/4-Channel Stereo Surround Synthesizer
OVERVIEW
The QS7785PF/CF is an audio processor IC that
generates 2, 4, 5-channel stereo surround signals
from 2-channel stereo or mono sources using QSur-
round™ technology developed and licensed by
QSound Labs, Inc.
FEATURES
I Surround signal output for 2-channel front speak-
ers
I Surround signal output for 4-channel front + sur-
round speakers
I Center speaker output for voice signals
I Parallel and 2 serial interfaces for mode control
supported
APPLICATIONS
I TV, radio and VCRs
I Car audio
PINOUT (Top view)
QS7785PF
It can create 2-channel left and right surround effect
signal for front speakers, and a rich enhanced sur-
round signal using front speakers and surround
speakers for 4-channel output. It also features a cen-
ter signal output for clear listening of vocal and
speech signals.
• QS7785CF: I2C bus 2-wire serial interface
(Data and Clock)
• QS7785PF: 3-wire serial interface (Data, Clock
and Strobe)
I 5 to 13V analog supply
I 4.5 to 5.5V digital supply
I 48-pin QFP package
I Multimedia products
QS7785CF
RIN 37
LIN 38
BASC2 39
MSC6 40
MSC5 41
MSC4 42
MSC3 43
MSC2 44
MSC1 45
QXCC1 46
QXCC2 47
QXCC3 48
QS7785PF
24 SROUT
23 SLOUT
22 COUT
21 CIN
20 LPC
19 VREFIN
18 N.C.
17 VREFOUT
16 PSAVE
15 MUTE
14 BASS
13 SUR(SCL)
RIN 37
LIN 38
BASC2 39
MSC6 40
MSC5 41
MSC4 42
MSC3 43
MSC2 44
MSC1 45
QXCC1 46
QXCC2 47
QXCC3 48
QS7785CF
24 SROUT
23 SLOUT
22 COUT
21 CIN
20 LPC
19 VREFIN
18 N.C.
17 VREFOUT
16 PSAVE
15 MUTE
14 BASS
13 SUR(SCL)
ORDERING INFORMATION
Device
QS7785PF
QS7785CF
Package
48-pin QFP
48-pin QFP
I2C bus is a registered trademark of Philips Electronics N.V.
Dolby and the double-D symbol are registered trademarks of Dolby Laboratories Licensing Corporation.
NIPPON PRECISION CIRCUITS—1
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