NJW1142 Datasheet, PDF (1/14 Pages) New Japan Radio – AUDIO PROCESSOR

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.
All of the internal status and variables are controlled by I²C
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
q Variable AGC Compression Level via I²C (4-levels)
q Bi-CMOS Technology
q Package Outline
SDMP30
sBLOCK DIAGRAM
MONa AGC
TONE TONE
-Ha -La
OUTa
IN1a
IN2a
IN3a
IN4a
IN1b
IN2b
IN3b
IN4b
SEL
AGC
SEL
MONb
VOL1
VOL1
e ala
&
Sim ulated
Stere o
TONE
TONE
VOL2
VOL2
I2C BUS
Interface
SDA
SCL
CVA
CVB
CTH
CTL
Bias
GND
Vcc
TONETONE
-Hb -Lb
OUTb
Vref
-1–