NJW1142M 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJW1142M

AUDIO PROCESSOR

Japan Radio Corporation  

NJW1142

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 NJRC Surround "eala" which

is regenerated 3D surround sound with only two speakers.

All of the internal status and variables are controlled by I2C

BUS interface.

NJW1142L

s FEATURES

q Operating Voltage

8 to 10V

q Internal 4 Input Audio Selectors and Monitor Output

q Low Noise VCA

q NJRC Surround "eala"

q Simulated Stereo

q Variable AGC Compression Level via I2C (4-levels)

q Bi-CMOS Technology

q Package Outline

SDIP30, SDMP30

NJW1142M

sBLOCK DIAGRAM

MONa AGC

TONE TONE

-Ha -La

OUTa

IN1a

IN2a

IN3a

IN4a

IN1b

IN2b

IN3b

IN4b

SEL

VOL1

AGC

SEL

VOL1

MONb

NJRC

Suuround

“e ala”

&

Sim ulated

Stere o

TONE

TONE

VOL2

VOL2

I2C BUS

Interface

SDA

SCL

CVA

CVB

CTH

CTL

CSR

Bias

GND

Vcc

TONETONE

-Hb -Lb

OUTb

Vref

-1–

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