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PDF NJU26041-01A Data sheet ( Hoja de datos )

Número de pieza NJU26041-01A
Descripción Digital Signal Processor
Fabricantes New Japan Radio 
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NJU26041-01A
Digital Signal Processor for TV
General Description
Package
The NJU26041-01A is a high performance 24-bit digital signal processor.
The NJU26041-01A provides ‘eala’ 3D Surround function, ‘ealaBass’ Dynamic
Bass Boost function, Dialogue Boost, 3-bands 2-stages AGC, and Tone Control.
These kinds of sound functions are suitable for TV, mini-component, CD
radio-cassette, speakers system and other audio products.
FEATURES
- Software
3D sound : eala(NJRC Original Surround)
Sound Enhancement: : ealaBass (NJRC Original Dynamic Bass Boost)
: Dialogue Boost (NJRC Original Dialogue Boost)
3-bands 2-stages AGC
Tone Control
Master Volume / Balance control
WatchDog Clock Output
NJU26041V
- Hardware
24bit Fixed-point Digital Signal Processing
Maximum System Clock Frequency : 38MHz Max.
Digital Audio Interface
Digital Audio Format
: 1 Input port / 2 Output ports
: I2S 24bit, Left- justified, Right-justified, BCK : 32/64fs
Master / Slave Mode
: Master Mode MCK 1/2 fclk, 1/3 fclk
ex. MCK = 384Fs(1/2) or MCK = 256Fs(1/3) at fclk=768Fs
Power Supply
: 3.3V
Input terminal
: 5V Input tolerant
Package
: SSOP32 (Pb-Free)
Two kinds of micro computer interface : I2C bus (standard-mode/100kbps, Fast-mode/400kbps)
: Serial interface (4 lines: clock, enable, input data, output data)
The detail hardware specification is described in the “ NJU26041 Series Hardware Data Sheet”.
Ver.2007-10-13
-1-

1 page




NJU26041-01A pdf
NJU26041-01A
Digital Audio Interface
The NJU26041-01A audio interface provides industry standard serial data formats of I2S, MSB-first left-justified or
MSB-first right-justified. The NJU26041-01A audio interface provides one data input, SDI0 and two data outputs, SDO0,
SDO1 as shown in table 2, table 3 and Fig.2. An audio interface input and output data format become the same data
format.
Table 2 Serial Audio Input Pin
Pin No. Symbol
Description
14 SDI0 Audio Data Input 0 L / R
Table 3
Pin No.
19
20
Serial Audio Output Pin
Symbol
Description
SDO0 Audio Data Output 0
SDO1 Audio Data Output 1
L/R
L/R
LPF/HPF
Host Interface
The NJU26041-01A 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.
Serial Host Interface Pin Description.(Table 5)
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 /SDOUT 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 NJU26041, these pins become
+5.0V Input tolerant.
Ver.2007-10-13
-5-

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