NJW1144
AUDIO PROCESSOR
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GENERAL DESCRIPTION
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PACKAGE OUTLINE
The
NJW1144
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
NJW1144
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
2
NJW1144GK1
I C BUS interface.
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FEATURES
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Operating Voltage
8 to 13V
2
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I C BUS Interface
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BBE Sound Enhancement (Low Boost and High Boost: 15dB max.)
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Internal 6 Input Audio Selectors and Monitor Output
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The AGC circuit reduces volume difference among input sources.
2
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Variable AGC Compression Level via I C (4-levels)
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SRS 3D Stereo and Simulated Stereo
2
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Variable Surround Effect Level via I C
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Low Noise VCA
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Bi-CMOS Technology
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Package Outline
SOP40-K1
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BLOCK DIAGRAM
MONa
AGC
TONE TONE
-Ha
-La
OUTa
-2dB
+4.5dB
IN1a
IN2a
IN3a
IN4a
IN5a
IN6a
SDA
SCL
CVA
CVB
CTH
CTL
CSR
CSB
SEL
VOL1
SRS
3D Stereo
&
Sim ulated
Stereo
VOL1
-2dB
BBE
TONE
VOL2
I
2
C BUS
Interface
AGC
IN1b
IN2b
IN3b
IN4b
IN5b
IN6b
SEL
BBE
TONE
VOL2
Bias
GND
Vcc
+4.5dB
MONb
TONE TONE
-Hb
-Lb
OUTb
Vref
-1-
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