Signal Processor. NJU26040-18A Datasheet

NJU26040-18A Processor. Datasheet pdf. Equivalent

NJU26040-18A Datasheet
Recommendation NJU26040-18A Datasheet
Part NJU26040-18A
Description Digital Signal Processor
Feature NJU26040-18A; NJU26040-18A DSP with eala / eala Stereo Expander / FIR Filter ■ General Description The NJU26040-.
Manufacture New Japan Radio
Datasheet
Download NJU26040-18A Datasheet




New Japan Radio NJU26040-18A
NJU26040-18A
DSP with eala / eala Stereo Expander / FIR Filter
General Description
The NJU26040-18A is a digital audio signal processor that provides the function
eala / eala Rebirth or eala expand speaker + 128tap FIR filter.
The NJU26040-18A processes a lot of sound sources, such as DVD, CD,
AM/FM radio, and TV sound into spacious sound of natural surround by eala
technology. Also even if there is a small speaker system, NJU26040-18A make
rich sound with LPC technology.
The applications of NJU26040-18A are suitable for stereo outputs products such
as DVD Receivers, AV Amplifiers, TV, radio-cassettes player or ordinary audio
products such as small speakers system.
Package
NJU26040V-18A
FEATURES
- Software
NJRC original eala surround is offered to the stereo I/O product.
NJRC original eala Rebirthis sound enhancement for compression audio.
NJRC original eala Stereo Expanderis wider stereo effect.
Stereo 128 tap FIR filter for NJRC Linear Phase Correction (LPC) Technology is easier correction of speaker characteristic.
1st order HPF for stereo input signal.
Simplified passive matrix 6 channels output.
Input Trim / Master Volume with smooth control.
Watch Dog Clock output.
- Hardware
24bit Fixed-point Digital Signal Processing
Maximum System Clock Frequency
Digital Audio Interface
Digital Audio Format
Master / Slave Mode
Power Supply
Input terminal
Package
Micro computer interface
: 38MHz Max
: 3 Input ports / 3 Output ports
: I2S 24bit, Left-justified, Right-justified, BCK : 32fs/64fs
: Master Mode MCK : 1/2 fclk, 1/3 fclk
ex. MCK = 384Fs(1/2) or MCK = 256Fs(1/3) at fclk=768Fs
: 3.3V
: 5V Input tolerant
: SSOP32 (Pb-Free)
: I2C 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 Data Sheet (NJU26040_E_REL.pdf).
Ver.2014.08.26
-1-



New Japan Radio NJU26040-18A
NJU26040-18A
Function Block Diagram
AD1/SDIN AD2/SSX
NJU26040-18A
SCL/SCK
SDA/SDOUT
RESETb
MCK
XI
XO
SERIAL
HOST
INTERFACE
DSP ARITHMETIC UNIT
PROGRAM
CONTROL
ALU
24-BIT x 24-BIT
MULTIPLIER
TIMING
GENERATOR
ADDRESS GENERATION UNIT
SERIAL AUDIO
INTERFACE
L/R
C/SW
Ls/Rs
DATA
RAM
FIRMWARE
RAM
GPIO
Fig. 1 NJU26040-18A Block Diagram
DSP Block Diagram
SDI0
SDI1
SDI2
HPF
Input
Trimmer
eala /
eala Rebirth
Expand
Speaker
FIR
(128tap)
LS : L*sdo2_dmix_trim0 - R*sdo2_dmix_trim1
RS: R*sdo2_dmix_trim1 - L*sdo2_dmix_trim0
Master
Volume
C = SW : (L+R)/2
Fig. 2 NJU26040-18A Function Diagram
BCKO
LRO
SDO0
SDI0
SDI1
SDI2
SDO1
BCKI
SDO2
LRI
WDC
MUTEb
PROC.
SEL
SDO0
SDO2
SDO1
-2-
Ver.2014.08.26



New Japan Radio NJU26040-18A
Pin Configuration
VDD
SDA/SDOUT
SCL/SCK
AD1/SDIN
AD2/SSb
RESETb
VDD
VDD
VSS
CLKOUT
CLK
SDI2
SDI1
SDI0
LRI
BCKI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NJU26040-18A
32 VSS
31 TEST
30 TEST
29 SEL
28 PROC
27 MUTEb
26 WDC
25 VDD
24 VSS
23 TEST
22 MCK
21 SDO2
20 SDO1
19 SDO0
18 LRO
17 BCKO
Fig. 3 NJU26040-18A Pin Configuration
Ver.2014.08.26
-3-







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