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NJU26110
General Description
SRS CSII 5.1 & TruSurround XT Decoder Package
The NJU26110 is a digital signal processor that provides the function of Circle Surround II 5.1 / TruSurroundXT and Mono-to-Stereo. The NJU26110 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 NJU26110 are suitable for multi-channel products such as DVD Receivers, AV Amplifiers, TV, Car Audio or ordinary audio products such as small speakers system.
NJU26110FR1
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 NJU26110 is described in the " NJU26100 Series Hardware Data Sheet".
Ver.2004-08-31
-1-
NJU26110
Function Block Diagram
AD1/SDIN AD2/SSb
NJU26110
DSP ARITHMETIC UNIT SERIAL AUDIO INTERFACE BCKO LRO 24-BIT x 24-BIT MULTIPLIER ALU L/R SDO0 SDI0 SDI1 C/LFE SDO1 BCKI SL/SR SDO2 LRI
SCL/SCK
SDA/SDOUT
SERIAL HOST INTERFACE
PROGRAM CONTROL
RESETb MCK XI XO TIMING GENERATOR ADDRESS GENERATION UNIT
DELAY RAM
DATA RAM
FIRMWARE ROM
GPIO AND CONFIGURATION INTERFACE
SEL1
Fig. 1 NJU26110 Block Diagram
DSP Block Diagram
NJU26110 Block Diagram
Dialog Clarity Select L/R/L+R Mono To Stereo Circle Surround II Decoder
Mono Input Mode CS decode mode
C L R Ls Rs
Delay
Phanton Center
+ +
L R
L
Output Channel Trimmer Focus
TruBass Mixer (L/R,SL/SR,SW)
Lt
L L R C S
TruSurround
C R Ls Rs Sw
Master Volume
Input Trimmer
L R
Passive Matrix
Rt
R
Stereo Input Mode TruSurround/ Through mode
Focus
SL SR SW
Focus
+
80Hz LPF TruBass
L R Ls Rs SW
Delay
Fig. 2 NJU26110 Function Diagram
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Ver.2004-08-31
NJU26110
Pin Configuration
VDDR VDDR VDDC VDDC VSSC VSSR
24
VSSR
23
VSSC
22
21
20
19
18
17
SDI0 SDI1 TEST0 LRI BCKI MCK BCKO LRO
Fig. 3 NJU26110 Pin Configuration
25
WDC VSSC VDDC RESETb VSSO XO XI VDDO
16
26 15 27 14 28
NJU26110
13
29 30 31 32 1
12 11 10 9
2
3
4
5
6
7
8
SDO0
SEL1
SCL/SCK
SDA/SDOUT
AD1/SDIN
AD2/SSb
SDO2
SDO1
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
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
Ver.2004-08-31
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NJU26110
Audio Data Output
The NJU26110 audio interface provides industry standard serial data formats of I2S, MSB-first left-justified or MSB-first right-justified. The NJU26110 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
Serial Audio Input Pin
Symbol SDI0 SDI1 Description Audio Data Input 0 L / R Audio Data Input 1 L / R
Table 3
Pin No. 3 2 1
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 NJU26110 is described in the " NJU26100 Series Hardware Data Sheet".
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Ver.2004-08-31
NJU26110
Firmware Command Table
Host processor can control the NJU26110 via I2C bus or 4-Wire serial bus interface. The following table summarizes the available user commands.
Table 5 NJU26110 Command
No. Command 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Set Task CSII Mode TruBass Mode TruBass Base Control Focus Mode Focus Control Mono Input Select Sample Rate Rear Space Gain 4 Ch. Stereo Mode Delay Master Volume Input Trimmer Left Volume Right Volume Left Volume Center Volume Sl Volume Sr Volume SubWoofer Volume System Status TruBass Base Control SW TruBass Base Control Sl / Sr Focus Control L / R Focus Control Sl / Sr NOP 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 Set TruBass Base : Gang Mode, Mute, TruBass Level Set Focus mode : Sl / Sr, L / R, C Focus Control Set Mono Input : Gang, Mute, Focus Value : L / R, L+R : 0 ~ -15dB : 0 ~ 10 ms : 0 ~ -63dB : 0 ~ -63dB : 0 ~ -63dB : 0 ~ -63dB : 0 ~ -63dB : 0 ~ -63dB : 0 ~ -63dB : 0 ~ -63dB
Set Sample Rate : 48, 44.1, 32 KHz Set Rear Space Gain Set Delay Time Set Master Volume Set Input Trimmer Set Left Volume Set Right Volume Set Left Volume Set Center Volume Set Sl Volume Set Sr Volume Select 4 Ch. Stereo Mode : On / Off
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
In respect to detail command information, request NJR.
Ver.2004-08-31
-5-
NJU26110
License Information
1. The SRS technology right incorporated in the NJU26110 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 NJU26110, 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 NJU26110 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. 1.0
-6-
Ver.2004-08-31

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