NJW1149 Ver la hoja de datos (PDF) - Japan Radio Corporation
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NJW1149
Japan Radio Corporation
NJW1149 Datasheet PDF : 26 Pages
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PRELIMINARY
NJW1149
Audio Processor with Sound Enhancement and TruSurround 5.1ch Virtualizer
s GENERAL DESCRIPTION
The NJW1149 is an audio processor with BBE sound enhancement
and SRS Labs' TruSurround 5.1 channel virtualizer. It includes all of
functions processing audio signal for TV, such as volume, balance, mute,
tone control, eala NJRC original surround and simulated stereo
functions. All of internal status and variables are controlled by I2C BUS.
s PACKAGE OUTLINE
s FEATURES
NJW1149FC2
q Operating Voltage
8 to 10 V
q I2C BUS Interface
q TruSurround 5.1ch. / 4ch. / 2ch. Inputs
q BBE
0dB to +15dB(0.5dB/step)
q eala (surround effect ; 2 steps) and Simulated Stereo
qVolume
0 to -80dB, MUTE (0.33dB/step)
qBalance
0 to -30dB, MUTE (1dB/step)
qTone Control
-15dB to +15dB(0.5dB/step)
q Bi-CMOS Technology
q Package Outline
QFP64-C2
s BLOCK DIAGRAM
L IN
R IN
FL IN
FR IN
ATT
+
ATT
-
RL IN
RRIN
C IN
SW IN
Vol1
Vol1
BBE Tone Vol2 Buffer
BBE Tone Vol2 Buffer
Bias
CBH
CBL
CVA
CVB
CTH
CTL
CSR
V+
GND
–1–
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