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NJW1163A

AUDIO PROCESSOR with Subwoofer Output

Japan Radio Corporation  

NJW1163/A

AUDIO PROCESSOR with Subwoofer Output

s GENERAL DESCRIPTION

The NJW1163/A is a sound processor with subwoofer

output includes all of functions processing audio signal for

TV, such as tone control, balance, volume, mute, and AGC

functions.

Also the NJW1163/A includes the LPF for subwoofer

output and bass boost function.

The original surround system reproduces natural surround

sound and clear vocal orientation.

All of internal status and variables are controlled by I2C

BUS interface.

s PACKAGE OUTLINE

NJW1163V

NJW1163AL

s FEATURES

q Operating Voltage

7.5 to 13V

q 3ch Output(Lch, Rch, Subwoofer ch) / 2ch Output(Lch, Rch)

q LPF Filter (Adjustable cut off frequency by external parts)

q AGC Circuit (It reduces volume difference among input sources.)

Adjustable AGC boost level by external parts and AGC compression level by I2C BUS

q eala(NJRC Original Surround System)

q Simulated Stereo

q I2C BUS Interface

q Bi-CMOS Technology

q Package Outline

NJW1163: SSOP32

NJW1163A: SDIP32

s BLOCK DIAGRAM

AGC1

TONE TONE

SS-FIL -Ha -La LF1 LF2 LF3 OUTa

SCL SDA ADR

CVA

CVB

IN a

VOL1

TONE

VOL2

CVW

CTH

AGC

eal a

&

Simulated

Stereo

LPF

VOL2

Trimmer

I2CBUS

Interface

CTL

CSR

PORT1

PORT0

AUX1

IN b

VOL1

TONE

VOL2

AUX0

Bias

GND

V+

AGC2

SR-FIL TONE TONE

-Hb -Lb

OUTb

OUTw

Vref

-1-

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