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| NJU26106 www..com General Description Dolby Pro Logic II / Virtual Dolby Surround Decoder Package The NJU26106 is a digital audio signal decoder that provides the function of Dolby Pro Logic II and Virtual Dolby Surround. The NJU26106 processes the stereo matrix-encoded signal into spacious sound of 5.1 channels by Dolby Pro Logic II and Bass Management System. Also non matrix-encoded audio signal can be processed into effective spacious sound by Music mode. The decoded 5-channel signal can be downmixed into 2-channel virtual surround output by the Dolby Virtual technology. The NJU26106 is suitable for multi-channel products such as AV AMP and Car Audio, or ordinary audio products such as small speaker system. NJU26106FR1 FEATURES - Software * 5.1 Channel signal outputs by Dolby Pro Logic II * 2 Channel outputs by Virtual Dolby Surround * Movie mode / Music mode * Available for Center width control, Dimension control, Panorama mode, Music mode and Custom mode * Master Volume - Hardware * 24bit Fixed-point Digital Signal Processing * Maximum System Clock Frequency : 38MHz Max. * Digital Audio Interface : 2 Input ports / 3 Output ports * Digital Audio Format : 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". Ver.2006-09-13 -1- NJU26106 www..com Function Block Diagram AD1/SDIN AD2/SSb NJU26106 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 NJU26106 Block Diagram DSP Block Diagram ProLogicII and Virtual Dolby Surround Decorder Block Diagram L Lt ProLogic II Rt Scale Scale Scale Scale Scale L C Bass Management Left Output Right Output Master Volume Scale Virtual Dolby Surround L/R Balance Center Output Subwoofer Output LeftSurround Output RightSurround Output C R Ls Rs R Ls Rs SW L R Delay Noise Generator Fig. 2 NJU26106 Function Diagram -2- Ver.2006-09-13 NJU26106 www..com VDDR VDDR VDDC 18 24 23 22 21 20 19 SDI0 SDI1 TEST LRI BCKI MCK BCKO LRO 25 17 VDDC VSSR VSSR VSSC VSSC Pin Configuration 16 26 15 27 14 28 TEST VSSC VDDC RESETb VSSO XO XI VDDO NJU26106 13 12 11 31 30 29 10 32 9 1 2 3 4 5 6 7 SCL/SCK Fig. 3 NJU26106 Pin Configuration Pin Description Table 1 Pin Description No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol SDO2 SDO1 SDO0 SEL1 *1 SCL/SCK SDA/SDOUT AD1/SDIN AD2/SSb VDDO XI XO VSSO RESETb VDDC VSSC TEST *2 I/O O O O I I I/O I I -I O -I --I/O Description Audio Data Output SL/SR Audio Data Output C/SW Audio Data Output L/R Select I2C or Serial bus I2C Clock / Serial Clock I2C I/O / Serial Output I2C Address / Serial Input I2C Address / Serial Enable OSC Power Supply +2.5V X'tal Clock Input OSC Output OSC GND RESET (active Low) Core Power Supply +2.5V Core GND OPEN No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Symbol VDDC VSSC VDDR VSSR SDI0 SDI1 TEST LRI BCKI MCK BCKO LRO I/O Description Core Power Supply +2.5V Core GND I/O Power Supply +2.5V 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 SDA/SDOUT AD1/SDIN AD2/SSb SDO2 SDO1 SDO0 SEL1 8 ----I I I I I O O O * I : Input, O : Output, I/O: Bi-directional *1 SEL1 : Input *2 TEST : Bi-directional Ver.2006-09-13 -3- NJU26106 www..com Digital Audio Interface The NJU26106 audio interface provides industry standard serial data formats of I2S, MSB-first left-justified or MSB-first right-justified. The NJU26106 audio interface provides two data inputs, SDI0, SDI1 and three data outputs, SDO0, SDO1, SDO2 as shown in table 2, table 3 and Fig.2. An audio interface input and output data format become the same data format. The input serial data is selected by the firmaware command. In Virtual Dolby Surround mode, SD0 output generates Lch. and Rch. signal. The other channels are muted. 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 Description SDI0 Audio Data Input 0 L / R SDI1 Audio Data Input 1 L / R Serial Audio Output Pin Symbol Description SDO0 Audio Data Output 0 L / R SDO1 Audio Data Output 0 C/SW SDO2 Audio Data Output 0 SL/SR *1 Note: *1 In Virtual Dolby Surround mode, only front Lch/Rch output signal. The other channels are muted. Host Interface The NJU26106 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 I C bus 4-Wire serial bus 2 Table 5 Serial Host Interface Pin Description Symbol 4-Wire Serial bus Format Pin No. I2C bus Format (I2C bus / Serial) 5 SCL / SCK Serial Clock Serial Clock Serial Data Input/Output Serial Data Output 6 SDA / SDOUT (Open Drain Input/Output) (CMOS) 7 AD1 / SDIN I2C bus address Bit1 Serial Data Input Serial enable 8 AD2 / SSb I2C bus address Bit2 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 NJU26106 www..com I C bus 2 When the NJU26106 is configured for I2C bus communication during the Reset initialization sequence. I2C bus interface transfers data to the SDA pin and clocks data to the SCL pin. AD1 and AD2 pins are used to configure the seven-bit SLAVE address of the serial host interface. (Table 6) This offers additional flexibility to a system design by four different SLAVE addresses of the NJU26106. An address can be arbitrarily set up by the AD1 and AD2 pins. The I2C address of AD1/AD2 is decided by connection of AD1/AD2 pins. Table 6 I2C bus SLAVE Address AD2 AD1 bit7 0 0 0 0 bit6 0 0 0 0 bit5 1 1 1 1 bit4 1 1 1 1 bit3 1 1 1 1 bit2 0 0 1 1 bit1 0 1 0 1 R/W bit0 R/W Start bit Slave Address ( 7bit ) R/W bit ACK * SLAVE address is 0 when AD1/2 is "Low". SLAVE address is 1 when AD1/2 is "High". Note : In case of the NJU26106, only single-byte transmission is available. The serial host interface supports "Standard-Mode (100kbps)" I2C bus data transfer. 4-Wire Serial Interface The serial host interface can be configured for 4-Wire Serial bus communication by setting SEL1 pin ="High" during the Reset initialization sequence. SHI bus communication is full-duplex; a write byte is shifted into the SDIN pin at the same time that a read byte is shifted out of the SDOUT pin. Data transfers are MSB first and are enabled by setting the Slave Select pin Low ( SSb=0 ). Data is clocked into SDIN on rising transitions of SCK. Data is latched at SDOUT on falling transitions of SCK except for the first byte (MSB) which is latched on the falling transitions of SSb. SDOUT is Hi-Z in case of SSb = "High". SDOUT is CMOS output in case of SSb = "Low". SDOUT needs a pull-up resistor when SDOUT is Hi-Z. SSb SCK SDIN SDOUT Hi-Z bit7 MSB bit6 bit6 bit5 bit5 bit1 bit1 bit0 LSB bit7 bit0 unstable Hi-Z Fig. 4 4-Wire Serial Interface Timing Note: When the data-clock is less than 8 clocks, the input data is shifted to LSB side and is sent to the DSP core at the transition of SSb="High". When the data-clock is more than 8 clocks, the last 8 bit data becomes valid. After sending LSB data, SDOUT transmits the MSB data which is received via SDIN until SSb becomes "High". SDOUT is Hi-Z in case of SSb = "High". SDOUT is CMOS output in case of SSb = "Low". SDOUT needs a pull-up resistor to prevent SDOUT from becoming floating level. Ver.2006-09-13 -5- NJU26106 www..com NJU26106 Bass Management 1. The specification of Bass Management is the extended version from Dolby. 2. The 4 types of crossover frequencies for speaker are selectable. ( Fig. 6, 7 ) 100, 150, 200, 250Hz ( 12dB / Oct. ) 3. The 4 types of low frequency destinations are selectable. ( Fig. 5 ) Subwoofer, Left / Right, Left Surr / Right Surr, Left / Right + Left Surr / Right Surr NJU26106 Pro Logic II Bass Management LPF Delay & Attenuator LPF Attenuator FRONT REAR SUB Subwoofer Lt HPF Thru L Lt C Left Center Right Left Surround Right surround BM Thru Rt HPF Pro Logic II R Decoder Rt Ls Rs BM Crossover Frequency for BM 100/150/200/250Hz 12dB/oct Fig.5 Bass Management Function Block Diagram -6- Ver.2006-09-13 NJU26106 www..com NJU26106 High Pass Filter Cutoff Frequency : 100 / 150 / 200 / 250Hz Audio Precision +0 -5 -10 -15 -20 d B F S -25 -30 -35 -40 -45 -50 -55 -60 20 12dB / Oct. Bass Managem ent HPF +0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 -55 -60 d B F S 50 100 200 500 Hz 1k 2k 5k 10k 20k Fs = 48kH z H PF (Input = C enter@ 23dB / Output = C enter) 100H z (R ed) 150H z (Blue) 200H z (Magenta) 250H z (Green) bas s 2s ub_iza.at2 Fig. 6 NJU26106 High Pass Filter NJU26106 Low Pass Filter Cutoff Frequency : 100 / 150 / 200 / 250Hz Audio Precision +0 -5 -10 -15 -20 d B F S -25 -30 -35 -40 -45 -50 -55 -60 20 12dB / Oct. Bass Managem ent LPF +0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 -55 -60 d B F S 50 100 200 500 Hz 1k 2k 5k 10k 20k Fs = 48kH z LPF (Input = C enter@ 23dB / Output = C enter) 100H z (R ed) 150H z (Blue) 200H z (Magenta) 250H z (Green) bas s 2s ub_iza.at2 Fig. 7 NJU26106 Low Pass Filter Ver.2006-09-13 -7- NJU26106 www..com NJU26106 Command Table Table 7 NJU26106 Command No. Command 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 SET_TASK_CMD VDS_ANG_CMD DPL_SUR_CMD CWIDTH_DIM_CMD DPL_MOD_CMD BASS_MGNT_CMD FS_CMD NOISE_CMD DLY_CMD LR_BAL_CMD MST_VOL_CMD LCH_VOL_CMD RCH_VOL_CMD CENT_VOL_CMD SURR_LEFT_VOL_CMD SURR_RIGHT_VOL_CMD SW_VOL_CMD SYS_SET_CMD Notes : In respect to detail command information, request New Japan Radio Co., Ltd. and permission of a licenser (Dolby) is required. License Information 1. The Word "DOLBY", "Pro Logic" and the double D mark are trademarks of Dolby Laboratories. The NJU26106 can only be delivered to licensees of Dolby Laboratories. Please refer to the licensing application manual issued by Dolby Laboratories. [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. -8- Ver.2006-09-13 |
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