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PDF NJU26202 Data sheet ( Hoja de datos )
| Número de pieza | NJU26202 | |
| Descripción | SRS CS Auto/ TruBass/Focus / Hall Simulator / QFP48-N2 | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJU26202
Digital Signal Processor for Car Audio
General Description
The NJU26202 is a digital signal processor that provides the function of
Circle Surround Automotive, Hall Simulator, 7Band PEQ / GEQ, and Time Alignment.
The applications of NJU26202 are suitable for multi-channel products such as Car Audio
small speakers system.
■Package
NJU26202FN2
Features
-Software
SRS Circle Surround Automotive
TruBass
FOCUS
Hall Simulator
7Band PEQ / GEQ
Time Alignment
Sampling Frequency
- 16kHz/22.05kHz/24kHz/32kHz/44.1kHz/48kHz (Stereo Input Mode and Multi Input Mode)
- 32kHz/44.1kHz/48kHz (CS Auto Mode)
-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 24bit, left-justified, right-justified,
Master / Slave Mode
Microcomputer Interface
- I2C Bus (Standard-mode/100kbps, Fast-mode/400kbps)
- 4 -Wire Serial Bus (4-Wire: Clock, Enable, Input data, Output data)
Operating Voltage
Input Terminal
: VDD = VDDPLL = 1.8V
: VDDIO = 3.3V
: 5.0V Input tolerant
Package
: QFP48-N2 (Pb-Free)
BCK : 32fs/64fs
* The detail hardware specification of the NJU26202 is described in the “ NJU26200 Series Hardware Data Sheet”.
Ver.2006-11-27
-1-
1 page  
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NJU26202
Audio Interface
The NJU26202 audio interface provides industry serial data formats of I2S, MSB-first Left-justified or MSB-first
Right-justified. The NJU26202 audio interface provides two data inputs, SDI0 and SDI1, and three data outputs,
SDO0, SDO1 and SDO2, as shown in table 2 and 3. The input serial data is selected by the firmware command.
Table 2 Serial Audio Input Pin
Pin No. Symbol
Description
47 SDI0 Lch / Rch Audio Data Input 0
46 SDI1 Lch / Rch Audio Data Input 1
45 SDI2 Cch / SWch Audio Data Input 2
44 SDI3 LSch / RSch Audio Data Input 3
Table 3 Serial Audio Output Pin
Pin No. Symbol
Description
38 SDO1 Front Lch/Rch Audio Data Output 1
37 SDO2 Cch / SWch Audio Data Output 2
36 SDO3 Rear Lch/Rch Audio Data Output 3
Host Interface
The NJU26202 can be controlled via Serial Host Interface (SHI) using either of two serial bus formats : I2C bus or
4-Wire serial bus. Data transfers are in 8 bits packets (1 byte) when using either format. The SHI operates only in a
SLAVE fashion. A host controller connected to the interface always drives the clock (SCL / SCK) line and initiates
data transfers, regardless of the chosen communication protocol.
The detail I2C bus and 4-Wire Serial bus information are described in the ‘NJU26200 Series Hardware Data
Sheet’.
Table 4 Serial Host Interface Pin Descriptions
Pin No. Symbol
12 SEL
Setting
Low
High
Host Interface
I2C Bus Interface
4-Wire Serial Interface
Table 5
Pin No.
25
26
27
28
Serial Host Interface Pin Description
Symbol
(I2C /Serial)
I2C bus Interface
AD1/SDIN
I2C Address Select Bit1
AD2/SSb
I2C Address Select Bit2
SCL/SCK
Serial Clock
SDA/SDOUT Serial Data Input/Output
(Open Drain output)
4-Wire Serial Interface
Serial data input
Slave select
Serial Clock
Serial data output
(CMOS Output)
Note: 4-Wire Serial bus is selected, The SDA/SDOUT pin is CMOS output. The SDOUT pin does not require a
pull-up resistance.
I2C-Bus is selected, this pin is a bi-directional Open Drain output. This pin, which is assigned for I2C Bus, requires
a pull-up resistance.
The SDA/SDOUT pin is isn’t 5.0V Input tolerant.
Ver.2006-11-27
-5-
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet NJU26202.PDF ] | |
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