NJU26105 Datasheet PDF - JRC

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NJU26105
JRC

Part Number NJU26105
Description AGC/eala BASS/T.cont/PEQ/Vol./HPF / QFP32-R1
Page 7 Pages


NJU26105 datasheet pdf
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NJU26105
Digital Signal Processor for TV
General Description
Package
The NJU26105 is a high performance 24-bit digital signal processor.
The NJU26105 provides ‘eala’ 3D Surround function, ‘eala BASS’ Dynamic
Bass Boost function, 5Band PEQ, 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)
AGC
5Band PEQ
Tone Control
Master Volume
WatchDog Clock Output
NJU26105FR1
- Hardware
24bit Fixed-point Digital Signal Processing
Maximum System Clock Frequency : 38MHz Max.
Digital Audio Interface
Digital Audio Format
: 2 Input ports / 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
: 2.5V
Input terminal
: 3.3V Input tolerant
Package
: QFP32-R1 (Pb-Free)
Two kinds of micro computer interface : I2C bus (standard-mode/100kbps)
: Serial interface (4 lines: clock, enable, input data, output data)
The detail hardware specification is described in the “ NJU26100 Series Hardware Data Sheet”.
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Function Block Diagram
AD1/SDIN AD2/SSb
NJU26105
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 out
C/SW out
L/R in
L/R in
DATA
RAM
FIRMWARE
ROM
GPIO AND
CONFIGURATION
INTERFACE
BCKO
LRO
SDO0
SDO1
SDI0
SDI1
BCKI
LRI
SEL1
DSP Block Diagram
Fig. 1 NJU26105 Block Diagram
IN
SDI0
SDI1
Trim
AGC
eala
ealaBASS
Tone Control
5Band
PEQ
4Band
+HPF
LPF
Fig. 2 NJU26105 Function Diagram
L/R
M/V Vol
OUT
C
Vol
SW
Vol
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Pin Configuration
SDI0
SDI1
TEST
LRI
BCKI
MCK
BCKO
LRO
NJU26105
NJU26105
16 WDC
15 VSSC
14 VDDC
13 RESETb
12 VSSO
11 XO
10 XI
9 VDDO
Pin Description
Fig. 3 NJU26105 Pin Configuration
Table 1 Pin Description
No. Symbol I/O
Description
1 TEST
O Open
2 SDO1
O Audio Data Output 1 C/SW
3 SDO0
O Audio Data Output 0 L/R
4 SEL1 *1
I Select I2C or Serial bus
5 SCL/SCK
I I2C Clock / Serial Clock
6 SDA/SDOUT I/O I2C I/O / Serial Output
7 AD1/SDIN
I I2C Address / Serial Input
8 AD2/SSb
I I2C Address / Serial Enable
9 VDDO
-- OSC Power Supply +2.5V
10 XI
I X’tal Clock Input
11 XO
12 VSSO
O OSC Output
-- OSC GND
13 RESETb
I RESET (active Low)
14 VDDC
-- Core Power Supply +2.5V
15 VSSC
-- Core GND
16 WDC *2 O Clock for Watch Dog Timer
* I : Input,
O : Output,
I/O: Bi-directional
*1 SEL1 : Input
*2 WDC : Output
No. Symbol
17
18
VDDC
19
20
VSSC
21
22
VDDR
23
24
VSSR
25 SDI0
26 SDI1
27 TEST
28 LRI
29 BCKI
30 MCK
31 BCKO
32 LRO
I/O Description
-- Core Power Supply +2.5V
-- Core GND
-- I/O Power Supply +2.5V
-- I/O GND
I Audio Data Input 0 L/R
I Audio Data Input 1 L/R
I Connect to GND
I LR Clock Input
I Bit Clock Input
O Master Clock Output
O Bit Clock Output
O LR Clock Output
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Digital Audio Interface
The NJU26105 audio interface provides industry standard serial data formats of I2S, MSB-first left-justified or
MSB-first right-justified. The NJU26105 audio interface provides two data inputs, SDI0, SDI1 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
Pin No.
25
26
Serial Audio Input Pin
Symbol
Description
SDI0 Audio Data Input 0
SDI1 Audio Data Input 1
L/R
L/R
Table 3
Pin No.
3
2
Serial Audio Output Pin
Symbol
Description
SDO0 Audio Data Output 0
SDO1 Audio Data Output 1
L/R
C / SW
Host Interface
The NJU26105 can be controlled via Serial Host Interface (SHI) using either of two serial bus format : 4-Wire serial
bus or I2C 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.
4
Symbol
SEL1
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
4-Wire Serial bus Format
5 SCL / SCK
Serial Clock
Serial Clock
6 SDA / SDOUT
7 AD1 / SDIN
8 AD2 / SSb
Serial Data Input/Output
(Open Drain Input/Output)
I2C bus address Bit1
I2C bus address Bit2
Serial Data Output
(CMOS)
Serial Data Input
Serial enable
Note : SDA /SDOUT pin is a bi-directional open drain.
SDA /SDOUT output is normal CMOS output in case of 4-Wire Serial bus mode and SSb=”Low”.
SDA /SDOUT output is Hi-Z state in case of 4-Wire Serial bus mode and SSb=”High”. This pin
requires a pull-up resister in both 4-Wire serial and I2C bus mode.
-4-
Ver.2006-09-13



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