Audio Processor
NJW1172
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AUDIO PROCESSOR
s GENERAL DESCRIPTION s PACKAGE OUTLINE The NJW1172 is a sound processor in...
Description
NJW1172
www.DataSheet4U.com
AUDIO PROCESSOR
s GENERAL DESCRIPTION s PACKAGE OUTLINE The NJW1172 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 NJW1172 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 NJW1172GK1 I C BUS interface. s FEATURES qď€ Operating Voltage 8 to 13V 2 q I C 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. 2 q Variable AGC Compression Level via I C (4-levels) q SRS 3D Stereo and Simulated Stereo 2 q Variable Surround Effect Level via I C q Low Noise VCA q Bi-CMOS Technology q Package Outline SOP40-K1 sBLOCK DIAGRAM
MONa
VCAINa
AGC
TONE TONE -La -Ha
OUTa
IN1a IN2a IN3a IN4a IN5a IN6a
SDA SCL SEL VOL1 SRS 3D Stereo & Sim ulated Stereo VOL1 BBE TONE VOL2 Bias GND Vcc BBE TONE VOL2
I2C BUS Interface
AGC IN1b IN2b IN3b IN4b IN5b IN6b
CVA CVB CTH CTL CSR CSB
SEL
MONb
VCAINb
TONE TONE -Hb -Lb
OUTb
Vref
-1-
NJW1172
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s PIN CONFIGURATION
Ach Input Terminal 1 Ach Input Terminal 2 Ach Input Terminal 3 Ach Input Terminal 4 Ach Input Terminal 5 Ach Input Terminal 6 Ach Monitor Outp...
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