NJW1142
PRELIMINARY
AUDIO PROCESSOR
s
GENERAL DESCRIPTION
s
PACKAGE OUTLINE
The
NJW1142
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
NJW1142
performs eala (NJRC Original
Surround) which is regenerated 3D surround sound with
only two speakers.
2
All of the internal status and variables are controlled by I C
BUS interface.
NJW1142M
s
FEATURES
q
Operating Voltage
8 to 10V
q
Internal 4 Input Audio Selectors and Monitor Output
q
Low Noise VCA
q
eala (NJRC Original Surround System)
q
Simulated Stereo
2
q
Variable AGC Compression Level via I C (4-levels)
q
Bi-CMOS Technology
q
Package Outline
SDMP30
s
BLOCK DIAGRAM
MONa
AGC
TONE TONE
-La
-Ha
OUTa
-2dB
+4.5dB
SDA
SCL
CVA
CVB
I2C BUS
Interface
IN1a
IN2a
IN3a
IN4a
SEL
VOL1
TONE
VOL2
AGC
eala
&
Sim ulated
Stereo
CTH
CTL
IN1b
IN2b
IN3b
IN4b
SEL
-2dB
VOL1
TONE
VOL2
Bias
GND
Vcc
+4.5dB
MONb
TONETONE
-Hb -Lb
OUTb
Vref
-1鈥?/div>
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