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
2
functions. All of internal status and variables are controlled by I C BUS.
s
FEATURES
q
Operating Voltage
8 to 10 V
2
q
I C 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
PACKAGE OUTLINE
NJW1149FC2
s
BLOCK DIAGRAM
TONE-Ha
TONE-La
BBE-Ha
BBE-La
TS FIL2
CTS1
CTS2
OUTa
LFINa
LFOUTa
TS FIL1
eala Fil
AGC
LTS
Vol1
+
BBE
Tone
Vol2
Buffer
ATT
ATT
TruSurround
RL IN
RRIN
C IN
SW IN
Vol1
eala
-
BBE
Tone
Vol2
Buffer
Bias
V+
GND
TONE-Hb
TONE-Lb
LFOUTb
Center
Space1
Space2
BBE-Hb
BBE-Lb
TS FIL3
Vrefo
RTS
Outb
LFINb
Vref
I
2
C Bus Interface
L IN
R IN
FL IN
FR IN
SCL
SDA
CBH
CBL
CVA
CVB
CTH
CTL
CSR
AGC
鈥?鈥?/div>
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