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NJW1107A Datasheet

  • NJW1107A

  • Dolby Pro Logic Surround Decoder with Discrete 5.1ch Input

  • 11頁

  • ETC

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NJW1107A
PR E L I M I N ARY
Dolby Pro Logic Surround Decoder with Discrete 5.1ch Input
s
GENERAL DESCRIPTION
The
NJW1107A
is a Dolby Pro Logic Surround Decoder with
discrete 5.1ch input. It includes Dolby Pro Logic Surround decoder, 4
master volumes, 4 level trimmers and 6 switches.
The 6 switches choose internal Dolby Pro Logic Surround Decoder
or discrete 5.1ch inputs. The
NJW1107A
is most suitable for AV
amplifier with discrete 5.1ch inputs for Dolby Digital.
In addition to Dolby Pro Logic Surround function, the
NJW1107A
performs easily other surround function such as Hall, Live, Disco and
others, and echo and microphone mixing functions for Karaoke.
s
PACKAGE OUTLINE
NJW1107AFC3
Dolby and double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
San Francisco, CA94103-4813.USA.
This device is available only to licensees of Dolby Lab.
Licensing and application information may be obtained from Dolby Lab.
s
FEATURES
q
Operating Voltage: V
CC
=9V(Analog Block), V
DD
=5V(Digital Block)
q
Digital Delay on chip
q
Discrete 5.1ch Input for Dolby Digital
q
Master Volume for Center, Surround and Subwoofer Channel: -79 to 0dB/1dB step (0dB = Dolby Level)
q
Level Trimmer for Center, Surround and Subwoofer Channel: -31 to 0dB/1dB step (0dB = Dolby Level)
q
Karaoke function (Echo, MIC mixing)
q
Serial Data Interface (3-wire)
DATA, REQ, SCK
q
Bi-CMOS Technology
q
Package Outline
QFP80
s
FUNCTION
[Dolby Pro Logic Surround]
q
Automatic input balance
q
Noise sequencer
q
Adaptive matrix
q
Center mode control (Wide, Normal, Phantom, Off)
q
Modified B-type noise reduction
q
7kHz low pass filter
q
Dolby 3 stereo mode
q
Digital time delay (15.4, 20.5, 25.6, 29.2ms)
s
SYSTEM BLOCK DIAGRAM
L
R
LTIN
RTIN
Echo
SR
LIN
RIN
CIN
SLIN
SRIN
SWIN
normal
SWIN
Digital
Surround
Rear
Stereo
C
SL
Master
Trimmer Vol
COUT
ROUT
[Other Surround]
q
Sound field control
q
Front mixing control
q
Digital time delay
(15.4, 20.5, 25.6, 29.2 51.2ms)
[Karaoke]
q
Echo control
q
MIC mixing
q
Digital time delay (123, 184ms)
MICIN
Pro Logic
LOUT
SLOUT
SROUT
SWOUT
MCU
Interface
DATA
REQ
SCK
Dolby Pro Logic
Discr ete 5.1ch (ex. Dolby Digital)
- 1 -A

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