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PDF NJU26040-18A Data sheet ( Hoja de datos )
| Número de pieza | NJU26040-18A | |
| Descripción | Digital Signal Processor | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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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 Rebirth” is sound enhancement for compression audio.
NJRC original “eala Stereo Expander” is wider stereo effect.
Stereo 128 tap FIR filter for NJRC Linear Phase Correction (LPC) Technology is easier correction of speaker characteristic.
1’st 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-
1 page  
NJU26040-18A
■ Digital Audio Interface
The NJU26040-18A audio interface provides industry standard serial data format of I2S. The NJU26040-18A audio
interface provides three audio data inputs, three audio data outputs as shown in table 2, table 3.
Table 2
Pin No.
12
13
14
Serial Audio Input Pin
Symbol
Description
SDI2 Audio Data Input 2 (L/R)
SDI1 Audio Data Input 1 (L/R)
SDI0 Audio Data Input 0 (L/R)
Table 3
Pin No.
19
20
21
Serial Audio Output Pin
Symbol
Description
SDO0 Audio Data Output 0 (L/R)
SDO1 Audio Data Output 1 (C/SW)
SDO2 Audio Data Output 2 (Ls/Rs)
■ Host Interface
The NJU26040-18A can be controlled via Serial Host Interface (SHI) using either of two serial bus formats:I2C bus or 4-Wire
serial bus.(Table 4) Data transfers are in 8-bit packets (1 byte) when using either format.
Table 4 Serial Host Interface Pin Description
Pin No.
29
Symbol
SEL
Setting
“Low”
“High”
Host Interface
I2C bus
4-Wire serial bus
Table 5 Serial Host Interface Pin Description
Pin No.
Symbol
(I2C bus / Serial)
I2C bus Format
2
SDA / SDOUT *
Serial Data Input/Output
(Open Drain Input/Output)
3 SCL / SCK * Serial Clock
4 AD1 / SDIN *
I2C bus address Bit1
5 AD2 / SSb *
I2C bus address Bit2
4-Wire Serial bus Format
Serial Data Output
(Open-Drain Output)
Serial Clock
Serial Data Input
Serial enable
Note : SDA pin is a bi-directional open drain.
This pin requires a pull-up resistance in both I2C bus and 4-Wire serial mode.
When the power supply (VDD= +3.3V) is supplied to NJU26040-18A, these pins become +5.0V Input tolerant.
Ver.2014.08.26
-5-
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet NJU26040-18A.PDF ] | |
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