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QS7777PF Datasheet

  • QS7777PF

  • QSurround 3D Virtual Audio Processor for Dolby AC-3 and ProL...

  • 165.52KB

  • 11頁(yè)

  • NPC

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QS7777PF/CF
NIPPON PRECISION CIRCUITS INC.
QSurround鈩?3D Virtual Audio Processor
for Dolby AC-3 and ProLogic
OVERVIEW
The QS7777PF/CF is an audio processor IC which
implements the QSurround鈩?technology developed
and licensed by QSound Labs, Inc. It processes
Dolby Digital (AC-3) and Dolby Surround audio sig-
nals to produce enhanced virtual 3D sounds, even for
2-speaker systems. It can generate 2, 3, 4, and 5-
channel speaker con鏗乬urations, all with enhanced
surround signal outputs.
FEATURES
s
PINOUT
QS7777PF
Top view
QXDC1
QXCC4
QXCC3
QXCC2
QXCC1
QXBC5
QXBC4
QXBC3
QXBC2
27
s
36
35
34
33
32
31
VCC
30
29
28
26
QXDC2
QXDC3
QXDC4
FLIN
FRIN
CIN
SUBIN
RLIN
RRIN
MSC4
MSC5
MSC6
25
QXAC5
24
23
22
21
20
19
QXBC1
s
s
s
s
s
s
Enhanced surround signal from Dolby Digital
(AC-3) and Dolby Surround (ProLogic) input sig-
nals
2-step adjustable sound enhancement
Supported speaker con鏗乬urations
鈥?Dolby Digital (AC-3) 6-channel signals to 2, 3,
4, 5-channel speaker QSurround signal con鏗乬u-
rations
鈥?Dolby Surround (ProLogic) 4-channel signals
to 2, 3, 4-channel speaker QSurround signal
con鏗乬urations
Monaural to virtual stereo conversion
Parallel and 2 serial interface control modes
selectable
鈥?QS7777CF: I
2
C bus 2-wire serial interface
1
鈥?QS7777PF: 3-wire serial interface (Data, Clock,
Strobe)
5 to 13V analog supply
4.5 to 5.5V digital supply
48-pin QFP package
1. NPC employs I
2
C bus serial interface components
under license from Philips, and conforms to the Phil-
ips I
2
C bus speci鏗乧ations.
37
38
39
40
41
42
43
44
45
46
47
48
10
11
12
1
2
3
4
5
6
7
8
9
QXAC4
QXAC3
QXAC2
QXAC1
FLOUT
FROUT
COUT
RLOUT
RROUT
VDD
P/S
BYP
QS7777PF
18
17
16
15
14
13
SPREAD(SDA)
PSAVE(STRB)
MUTE(SCL)
VREFOUT
VREFIN
MSC3
MSC2
MSC1
GND
AC
27
AR
26
QS7777CF
Top view
QXDC1
QXCC4
QXCC3
QXCC2
QXCC1
QXBC5
QXBC4
QXBC3
QXBC2
VCC
QXAC5
25
24
23
22
21
20
19
36
35
34
33
32
31
30
29
s
s
s
s
DVD and laser disk players
TV and AV equipment
Multimedia products (including sound cards)
Car audio
QXDC2
QXDC3
QXDC4
FLIN
FRIN
CIN
SUBIN
RLIN
28
APPLICATIONS
37
38
39
40
41
42
43
44
45
46
47
48
QXBC1
MO
QXAC4
QXAC3
QXAC2
QXAC1
FLOUT
FROUT
COUT
RLOUT
RROUT
VDD
P/S
BYP
18
17
16
15
14
13
ORDERING INFORMATION
D e vice
QS7777PF
QS7777CF
P ackag e
48-pin QFP
48-pin QFP
QS7777CF
10
11
12
1
2
3
4
5
6
7
8
9
RRIN
MSC4
MSC5
MSC6
SPREAD(SDA)
MUTE(SCL)
VREFOUT
VREFIN
PSAVE
MSC3
MSC2
MSC1
GND
AC
AR
I
2
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?
MO

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