NJU26208 PDF даташит
Спецификация NJU26208 изготовлена «JRC» и имеет функцию, называемую «SRS Circle Surround Automotive & TruSurround XT / QFP48-N2». |
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Детали детали
Номер произв | NJU26208 |
Описание | SRS Circle Surround Automotive & TruSurround XT / QFP48-N2 |
Производители | JRC |
логотип |
11 Pages
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NJU26208
SRS CS Auto & CSII 5.1 & TruSurround XT Decoder
General Description
■ Package
The NJU26208 is a digital signal processor that provides the function of Circle Surround
Automotive / Circle SurroundII5.1 / TruSurroundXT and Mono-to-Stereo.
The NJU26208 processes the stereo matrix-encoded signal into spacious sound of
5.1channels by Circle SurroundII5.1. Also non matrix-encoded audio signal can be
processed into effective spacious sound.
The decoded 2-channel signal can be converted into spacious 2-channel virtual surround
output by the TruSurroundXT technology.
The applications of NJU26208 are suitable for multi-channel products such as
DVD Receivers, AV Amplifiers, TV, Car Audio or ordinary audio products such as
small speakers system.
NJU26208FN2
FEATURES
- Software
• SRS Circle Surround Automotive for Car Audio
• 5.1-Channel signal outputs by Circle Surround II 5.1
• 2-Channel outputs by SRS TruSurround XT
• Speaker sound elevation by Focus
• Rich low frequency reproduction by TruBass
• Generating 5.1-channel outputs from mono signal by Mono-To-Stereo function
- Hardware
• 24bit Fixed-point Digital Signal Processing
• Maximum Clock Frequency
: 12.288MHz(Standard), built-in PLL Circuit
• Digital Audio Interface
• Digital Audio Format
: 4 Input ports / 3 Output ports
: I2S, Left- justified, Right-justified, 16/18/20/24 bit, BCK : 32/64fs
• Master / Slave Mode
• Serial Host Interface
: In Master mode, MCK = 256fs, MCK2 = 512fs
: I2C-Bus (Standard-mode/100kbps, Fast-mode/400kbps)
: 4-Wire Serial Bus (Clock, Enable, Input data, Output data)
• Power Supply
: VDD = VDDPLL = 1.8V
: VDDIO = 3.3V
• Input terminal
: 5.0V Input tolerant
• Package
: QFP48-N2 (Pb-Free)
* The detail hardware specification of the NJU26208 is described in the “ NJU26200 Series Hardware Data Sheet”.
Ver.2006-11-27
-1-
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NJU26208
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Block Diagram
AD1/SDIN AD2/SSb
NJU26208
SCL/SCK
SDA/SDOUT
RESETb
MCK
CLK
CLKOUT
SERIAL
HOST
INTERFACE
24bit Fixed-point DSP Core
PROGRAM
CONTROL
ALU
24-BIT x 24-BIT
MULTIPLIER
TIMING
GENERATOR
/ PLL
ADDRESS GENERATION UNIT
SERIAL AUDIO
INTERFACE
L/R
C/SW
SL/SR
DATA
RAM
FIRMWARE
ROM
General I/O
INTERFACE
Fig.1 NJU26208 Hardware Block Diagram
BCKO
LRO
SDI*
SDO1
SDO2
BCKI
SDO3
LRI
PROC
MUTEb
SEL
WDC
-2-
Ver.2006-11-27
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Function Block Diagram
NJU26208 Block Diagram
(Stereo input mode)
SDI0
SDI1
LPF for
(L+R)
Trim
SW
NJU26208
Pink Noise
Generator
SDO1
Circle Surround II
Decoder
2ch Stereo / 4ch Stereo /
Passive Matrix 5ch
WatchDog
Output
WDC
TruSurround
Fig.2 Function Block Diagram (Stereo Input Mode)
SDO2
SDO3
Smooth
Control
L/R
SDI0
SDI1
C/SW SDI2
SL/SR SDI3
NJU26208 Block Diagram
(Multi Input Mode)
L/R/SW
LPF for
(L+R)
Trim
Mix to
SW
Pink Noise
Generator
SDO1
SDO2
WatchDog
Output
WDC
TruSurround
Fig.3 Function Block Diagram (Multi Input Mode)
SDO3
Smooth
Control
Ver.2006-11-27
-3-
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