NJU26040-09D
SRS TruSurround HD/HD4 Decoder
General Description
The NJU26040-09D is a digital audio signal processor that provides the
function of TruSurround HD/HD4 + FOCUS and WOW HD.
The NJU26040-09D processes all sound sources, such as DVD multi
channel signals, CD, AM/FM radio, and TV sound into spacious sound of
natural virtual surround by TruSurround HD/HD4 + FOCUS and WOW HD.
The applications of NJU26040-09D are suitable for front multi-channel and
stereo outputs products such as DVD Receivers, AV Amplifiers, TV,
radio-cassettes player, Car Audio or ordinary audio products such as small
speakers system.
Package
NJU26040V-09D
FEATURES
- Software
Front Multi channel outputs by SRS TruSurround HD/HD4 technology
WOW HD technology is offered to the stereo I/O product.
LFE by SRS TruBass-II technology
SRS FOCUS technology (FOCUS is possible to use with TruSurround HD/HD4.)
SRS Definition technology
improves the perception of clarity and acoustic space
Dialog Clarity technology
Support mono ~ 5.1ch input, 2.0 ~ 5.1ch output.
- Hardware
24bit Fixed-point Digital Signal Processing
Maximum System Clock Frequency : 38MHz Max.
Digital Audio Interface
: 3 Input ports / 3 Output ports
Power Supply
: 3.3V (Input : 5V tolerant)
Package
: SSOP32 (Pb-Free)
Micro computer interface
: I
2
C bus (standard-mode/100kbps, fast-mode/400kbps),
4-Wire Serial Bus (4-Wire: clock, enable, input data, output data)
The detail hardware specification is described in the “NJU26040 Series Hardware Data Sheet”.
Ver.2009-02-10
-1-
NJU26040-09D
L/R
C/SW
Ls/Rs
C
Ls
TruSurround
Dialog Clarity
Surround
Level
C pre
Ls pre
Rs pre
L pre
R pre
SW pre
TruSurround Input
Trimmer
Mono to
Stereo
TruSurround mode Block Diagram (TruSurround mode)
C-ch out disable
SW out disable
Input
Trimmer
Rs
L
R
SW
C pre
-3dB
Rear out enable
C-ch out enable
Definition
HPF
+
+
Rear out enable
+
Focus
C out
Ls out
Master / Channel Trimmer
+
HPF
Focus
Ls pre
Rs pre
Rear out disable
+
Rear out disable
+
SW out enable
Rs out
HPF
Definition
Focus
+
+
+
L pre
R pre
+
SW pre
+
+
+
+
+
SW out enable
Bass Management
with TruBass-II(L/R)
Bass Management
with TruBass-II (SW)
Focus
Definition
L out
R out
+
-6dB
SW out disable
SW out
TruSurround mode Block Diagram (TruSurround mode)
(for WOW HD Front)
TruBass II
Definition
Bass Management with
TruBass-II(L/R)
L
Input
Trimmer
L
R
+
+
FOCUS
SRS
FOCUS
Definition
L out
R out
SW out
Master / Channel
Trimmer
Limiter Headroom
Gain
TruSurround Input
Trimmer
R
SW
+
+
+
+
TruSurround mode Block Diagram (WOW HD mode)
Limiter
+
-6dB
Bass Management
with TruBass-II (SW)
WOW HD mode
TruBass disable
SW out disable
TSHD mode
TBII select LFE
TruBass enable
TBII select L/R
SW out enable
input(L/R)
HPF
output(L/R)
TruBass II
Front(L/R) Bass Management
LPF
TruBass disable
SW out disable
output(SW)
TBII select L/R
SW out enable
input(SW)
TruBass enable
TBII select LFE
TruBass II
LFE(SW) Bass Management
Fig.1-3c NJU26040-09D Function Diagram
-4-
Ver.2009-02-10
FPGA/CPLD
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