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| NJW1144 Datasheet, PDF (1/24 Pages) New Japan Radio – AUDIO PROCESSOR | |||
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NJW1144
AUDIO PROCESSOR
s GENERAL DESCRIPTION
s 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
I2C BUS interface.
NJW1144GK1
s FEATURES
qï Operating Voltage
8 to 13V
q I2C BUS Interface
q BBE Sound Enhancement (Low Boost and High Boost: 15dB max.)
q Internal 6 Input Audio Selectors and Monitor Output
q The AGC circuit reduces volume difference among input sources.
q Variable AGC Compression Level via I2C (4-levels)
q SRS 3D Stereo and Simulated Stereo
q Variable Surround Effect Level via I2C
q Low Noise VCA
q Bi-CMOS Technology
q Package Outline
SOP40-K1
sBLOCK DIAGRAM
IN1a
IN2a
IN3a
IN4a
IN5a
IN6a
IN1b
IN2b
IN3b
IN4b
IN5b
IN6b
MONa AGC
SEL
VOL1
AGC
SEL
VOL1
M ONb
SRS
3D Stere o
&
Sim ulated
Stere o
TONE TONE
-Ha -La
OUTa
BBE
TONE
VOL2
BBE
TONE
VOL2
I2C BUS
Interface
SDA
SCL
CVA
CVB
CTH
CTL
CSR
CSB
Bias
GND
V cc
TONE TONE
-Hb -Lb
OUTb
Vref
-1-
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