NJRC NJU26108FR1 Srs csii 5.1 and trusurround xt decoder Datasheet

NJU26108
SRS CSII 5.1 & TruSurround XT Decoder
■Package
■ General Description
The NJU26108 is a digital signal processor that provides the function of Circle
Surround II 5.1 / TruSurroundXT and Mono-to-Stereo.
The NJU26108 processes the stereo matrix-encoded signal into spacious sound of 5.1
channels by Circle Surround II 5.1. Also non matrix-encoded audio signal can be
processed into effective spacious sound.
The decoded 2-channel signal can be converted into spacious 2-channel virtual
surround output by the TruSurroundXT technology.
The applications of NJU26108 are suitable for multi-channel products such as DVD
Receivers, AV Amplifiers, TV, Car Audio or ordinary audio products such as small
speakers system.
NJU26108FR1
■ FEATURES
• 5.1-Channel signal outputs by Circle Surround II 5.1
• 2-Channel outputs by SRS TruSurroundXT
• Mono-to-Stereo function
• LFE by SRS TruBass
• SRS Focus
• Two kinds of micro computer interfaces
I2C bus ( standard-mode / 100Kbps )
Serial Interface (4 lines: Clock, Enable, Input data, Output data)
■ Digital Signal Processor Specification
• 24bit Fixed-point Digital Signal Processing
• Maximum System Clock Frequency
: 38MHz
• Digital Audio Interface
: 2 Input ports / 3 Output ports
• 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
• Two kinds of micro computer interface
・ I2C bus (standard-mode/100kbps)
・ Serial interface (4 lines: clock, enable, input data, output data)
• Power Supply
: 2.5V ( 3.3V Input tolerant )
• Package
: QFP32-R1
The detail hardware specification of the NJU26108 is described in the “ NJU26100 Series Hardware Data
Sheet”.
Ver.2004-08-26
-1-
NJU26108
■ Function Block Diagram
AD1/SDIN
NJU26108
AD2/SSb
SERIAL AUDIO
INTERFACE
DSP ARITHMETIC UNIT
SCL/SCK
SERIAL
HOST
INTERFACE
SDA/SDOUT
BCKO
PROGRAM
CONTROL
LRO
L/R
24-BIT x 24-BIT
MULTIPLIER
SDO0
SDI0
ALU
SDI1
RESETb
C/LFE
MCK
TIMING
GENERATOR
XI
SDO1
BCKI
ADDRESS GENERATION UNIT
SL/SR
XO
SDO2
LRI
DELAY
RAM
DATA
RAM
GPIO AND
CONFIGURATION
INTERFACE
FIRMWARE
ROM
SEL1
Fig. 1 NJU26108 Block Diagram
■ DSP Block Diagram
NJU26108 Block Diagram
Dialog Clarity
Select L/R/L+R
+
+
SR
SW
Master Volume
SL
Output Channel Trimmer
80Hz
LPF
L
R
Ls
Rs
SW
R
Delay
+
S
L
R
L
Focus
TruSurround/
Through mode
Focus
L
Focus
Stereo Input Mode
L
R
C
TruSurround
R
TruBass Mixer (L/R,SL/SR,SW)
Ls
Rs
L
Passive
Matrix
Rt
CS decode
mode
Mono Input Mode
Input
Trimmer
Lt
Circle Surround
II
Decoder
Delay
Mono
To
Stereo
Phanton Center
C
L
R
C
R
Ls
Rs
Sw
TruBass
Fig. 2 NJU26108 Function Diagram
-2-
Ver.2004-08-26
NJU26108
■ Pin Configuration
VDDR
VSSC
VSSC
VDDC
VDDC
22
21
20
19
18
17
16
15
VSSC
14
VDDC
13
RESETb
12
VSSO
11
XO
10
XI
9
VDDO
31
32
LRO
WDC
30
BCKO
NJU26108
29
MCK
VDDR
28
BCKI
23
27
LRI
VSSR
26
TEST0
24
25
SDI1
VSSR
SDI0
3
4
5
6
7
SDO1
SDO0
SEL1
SCL/SCK
SDA/SDOUT
AD1/SDIN
AD2/SSb
2
SDO2
8
1
Fig. 3 NJU26108 Pin Configuration
■ Pin Description
Table 1 Pin Description
No. Symbol
I/O
Description
1
SDO2
O
Audio Data Output 2 SL/SR
2
SDO1
O
Audio Data Output 1 C/SW
3
SDO0
O
Audio Data Output 0 L/R
Select I2C or Serial bus
4
SEL1
I *2
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
O
OSC Output
12
VSSO
-OSC GND
13
RESETb
I
RESET (active Low)
14
VDDC
-Core Power Supply +2.5V
15
VSSC
-Core GND
16
WDC
O *2 Clock for Watch Dog Timer
*1 I : Input, O : Output, I/O : Bi-directional
*2 SEL1 : Input, WDC : Output
Ver.2004-08-26
No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Symbol
VDDC
VDDC
VSSC
VSSC
VDDR
VDDR
VSSR
VSSR
SDI0
SDI1
TEST0
LRI
BCKI
MCK
BCKO
LRO
I/O
--------I
I
I
I
I
O
O
O
Description
Core Power Supply +2.5V
Core Power Supply +2.5V
Core GND
Core GND
I/O Power Supply +2.5V
I/O Power Supply +2.5V
I/O GND
I/O GND
Audio Data Input 0 L/R
Audio Data Input 1 L/R
Connect to GND
LR Clock Input
Bit Clock Input
Master Clock Output
Bit Clock Output
LR Clock Output
-3-
NJU26108
■ Audio Data Output
The NJU26108 audio interface provides industry standard serial data formats of I2S, MSB-first left-justified or MSB-first
right-justified. The NJU26108 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 firmaware command.
Table 2
Pin No.
25
26
Table 3
Pin No.
3
2
1
Serial Audio Input Pin
Symbol
SDI0
SDI1
Description
Audio Data Input 0 L / R
Audio Data Input 1 L / R
Serial Audio Output Pin
Symbol
SDO0
SDO1
SDO2
Description
Front Lch/Rch Output
Center/Sub Woofer Output
Rear Lch/Rch Output
■ I C address
2
AD1 and AD2 pins are used to configure the seven-bit SLAVE address of the serial host interface. These pins offer
additional flexibility to SLAVE address. 4 addresses could be chosen by AD1 and AD2-pin. The AD1 and AD2-pin
addresses are decided by the connections of AD1 and AD2-pin. The AD1 and AD2 addresses should be the same level
as AD1 and AD2-pin connections.
.
Table 4
I2C Bus SLAVE Address
bit7
bit6
bit5
bit4
Bit3
bit2
bit1
bit0
0
0
1
1
1
AD2*1
AD1*1
R/W
*1 AD1 or AD2 address is 0 when AD1 or AD2-pin is “L”. AD1 or AD2 address is 1 when AD1 or AD2-pin is “H”.
The detail I2C bus timing of the NJU26108 is described in the “ NJU26100 Series Hardware Data Sheet”.
-4-
Ver.2004-08-26
NJU26108
■
Firmware Command Table
Host processor can control the NJU26108 via I2C bus or 4-Wire serial bus interface. The following table
summarizes the available user commands.
Table 5 NJU26108 Command
No. Command
1
Set Task
2
CSII Mode
3
TruBass Mode
Command Description
Set Task : Mono-Stereo, TruSurround, Focus, TruBass,
CSII 5.1, Input Select
Set CSII mode : Cinema / Music, Phantom Center,
Rear Boost, Full Band Width, 525 Mode
Set TruBass mode : Sr/Sl, Sub Woofer, L/R, Speaker Size
4
TruBass Base Control
Set TruBass Base : Gang Mode, Mute, TruBass Level
5
Focus Mode
Set Focus mode : Sl / Sr, L / R, C
6
Focus Control
Focus Control
: Gang, Mute, Focus Value
7
Mono Input Select
Set Mono Input
: L / R, L+R
8
Sample Rate
Set Sample Rate : 48, 44.1, 32 KHz
9
Rear Space Gain
Set Rear Space Gain
10
4 Ch. Stereo Mode
Select 4 Ch. Stereo Mode : On / Off
11
Delay
Set Delay Time
: 0 ~ 10 ms
12
Master Volume
Set Master Volume
: 0 ~ -63dB
13
Input Trimmer
Set Input Trimmer
: 0 ~ -63dB
14
Left Volume
Set Left Volume
: 0 ~ -63dB
15
Right Volume
Set Right Volume
: 0 ~ -63dB
16
Left Volume
Set Left Volume
: 0 ~ -63dB
17
Center Volume
Set Center Volume
: 0 ~ -63dB
18
Sl Volume
Set Sl Volume
: 0 ~ -63dB
19
Sr Volume
Set Sr Volume
: 0 ~ -63dB
20
SubWoofer Volume
21
System Status
22
TruBass Base Control SW
23
TruBass Base Control Sl / Sr
24
Focus Control L / R
25
Focus Control Sl / Sr
26
NOP
Set SubWoofer Volume : 0 ~ -63dB
Set System Status : DSP Mode, Data Width, Serial Audio Mode,
Audio Clock, MCK clock
TruBass Base Control SW : Gang Mode, Mute, TruBass
Level
TruBass Base Control Sl / Sr : Gang Mode, Mute, TruBass
Level
Focus Control L / R
: Gang Mode, Mute, Focus
Level
Focus Control Sl / Sr
: Gang Mode, Mute, Focus
Level
Check DSP status
: 0 ~ -15dB
In respect to detail command information, request NJR.
Ver.2004-08-26
-5-
NJU26108
■ License Information
1. The SRS technology right incorporated in the NJU26108 are owned by SRS Labs, a U.S. Corporation and licensed
to New Japan Radio Co., Ltd. SRS is protected under U.S. and foreign patents issued and / or pending. “SRS”,
“Circle Surround II 5.1”, “TruSurround XT”, ”Focus”, “TruBass” and the
are trademarks of SRS Labs, Inc. in the
United States and selected foreign countries. Neither the purchase of the NJU26108, nor the corresponding sale of
audio enhancement equipment conveys the right to sell commercialized recordings made with any SRS technology.
SRS Labs requires that all users of the NJU26108 must enter into a license agreement directly with SRS Labs if the
royalty is not Included in the purchase price. SRS Labs also requires any users to comply with all rules and
regulations as outlined in the SRS Trademark Usage Manual.
For further information, please contact:
SRS Labs, Inc. 2909 Daimler Street. Santa Ana, CA 92705 USA
Tel: 949-442-1070 Fax: 949-852-1099 http://www.srslabs.com
2 Purchase of I2C components of New Japan Radio Co. ,Ltd or one of sublicensed Associated Companies
conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the
system conforms to the I2C Standard specification as defined by Philips.
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
Ver. 1.30
-6-
Ver.2004-08-26
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