NJW1134
AUDIO PROCESSOR
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GENERAL DESCRIPTION
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PACKAGE OUTLINE
The
NJW1134
is a sound processor includes all of the
functions required to process the audio signal for TV, such
as tone control, balance, volume, mute, and AGC functions.
Also the
NJW1134
performs BBE sound enhancement
and SRS 3D-Stereo. The BBE regenerates high definitive
and nearly real sound, and SRS 3D-Stereo regenerates 3D
surround sound with only two speakers.
All of the internal status and variables are controlled by
NJW1134GK1
2
I C BUS interface.
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FEATURES
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Operating Voltage
8 to 13V
2
G
I C BUS Interface
G
BBE Sound Enhancement (Low Boost and High Boost: 15dB max.)
G
Internal 6 Input Audio Selectors and Monitor Output
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The AGC circuit reduces volume difference among input sources.
2
G
Variable AGC Compression Level via I C (4-levels)
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Includes Dual Surround (SRS 3D-Stereo and NJRC Original Simulated Stereo)
2
G
Variable Surround Effect Level via I C (SRS mode, 2-Levels)
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Low Noise VCA
G
Bi-CMOS Technology
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Package Outline
SOP40
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BLOCK DIAGRAM
BBE2a
BBE1a
TONEHa
TONELa
MONa
LINEa
OUTa
AGC
SRS
FIL2
CVA
CVB
CTH
IN1a
IN2a
IN3a
IN4a
IN5a
IN6a
SURROUND
SRS
3D - Stereo
AGC
IN1b
IN2b
IN3b
IN4b
IN5b
-2dB
IN6b
+4.5dB
BIAS
INPUT
SELECTOR
VOLUME1
BBE
TONE
VOLUME2
SCL
&
NJRC Original
Simulated
Stereo
INPUT
SELECTOR
VOLUME1
BBE
TONE
VOLUME2
+4.5dB
-2dB
CTL
CSR
CONTROL
LOGIC
CSB
SDA
GND
VCC
TONEHb
BBE1b
BBE2b
TONELb
MONb
LINEb
SRS
FIL1
OUTb
VREF
-1-
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