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| NJU26108 General Description SRS CSII 5.1 & TruSurround XT Decoder Package 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. NJU26108 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 Clock Frequency : 38MHz Digital Audio Interface : 2 Input ports 3 Output ports Power Supply : DSP Core : 2.5V, I/O interface: 2.5V ( +3.3V tolerant ) Package : QFP 32pin The detail hardware specification of the NJU26108 is described in the " NJU26100 Series Hardware Data Sheet". In respect to software commands, request NJR. Ver.2003-08-21 -1- NJU26108 Function Block Diagram AD1/SDIN AD2/SSX NJU26108 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 RESETX MCK XI XO TIMING GENERATOR ADDRESS GENERATION UNIT DELAY RAM DATA RAM FIRMWARE ROM GPIO AND CONFIGURATION INTERFACE SEL1 Fig. 1 NJU26108 Block Diagram DSP Block Diagram NJU26108 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 NJU26108 Function Diagram -2Ver.2003-08-21 NJU26108 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 NJU26108 Pin Configuration 25 WDC VSSC VDDC RESETX VSSO XO XI VDDO 16 26 15 27 14 28 NJU26108 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/SSX SDO2 SDO1 Ver.2003-08-21 -3- NJU26108 Pin Description Table 1 Pin Description No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name SDO2 SDO1 SDO0 SEL1 SCL/SCK SDA/SDOUT AD1/SDIN AD2/SSX VDDO XI XO VSSO RESETX VDDC VSSC WDC I/O O O O I I IO I I P I O G I P G O Pin Description Audio Data Output ch.2 Audio Data Output ch.1 Audio Data Output ch.0 Select I2C or Serial bus No. 17 18 19 20 21 22 23 24 25 26 27 28 29 Pin Name VDDC VDDC VSSC VSSC VDDR VDDR VSSR VSSR SDI0 SDI1 Test0 LRI BCKI MCK BCKO LRO I/O P P G G P P G G I I I I I O O O Pin Description DSP Core Supply +2.5V DSP Core Supply +2.5V DSP Core Supply GND DSP Core Supply GND I/O Power +2.5V I/O Power +2.5V I/O Power GND I/O Power GND Power Power Power Power Supply Supply Supply Supply I2C clock / Serial clock I2C I/O / Serial Out I2C Address / Serial In I2C Address/Serial enable OSC Power Supply +2.5V OSC Clock Input OSC Clock Output OSC Power Supply GND Reset Audio Data Input Audio Data Input Connect to GND LR Clock Input Bit Clock Input A/D,D/A Clock Output Bit Clock Output LR Clock Output DSP Core Power Supply 30 +2.5V DSP Core Power Supply 31 GND Clock for Watch Dog Timer 32 * I : Input, O : Output, IO : Bi-directional, P : +Power, G : GND * Package is shown in fig. 3. -4- Ver.2003-08-21 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 Symbol SDI0 SDI1 Serial Audio Input Pin Pin No. 25 26 Description Audio Data Input 0 L / R Audio Data Input 1 L / R Table 3 Symbol SDO0 SDO1 SDO2 Serial Audio Output Pin Pin No. 3 2 1 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 1 1 0 0 1 1 1 AD2* AD1* 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". Ver.2003-08-21 -5- 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 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. -6- Ver.2003-08-21 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. 1.20 Ver.2003-08-21 -7- |
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