NJU26203A Dolby Pro Logic II Decoder General Description ■Package The NJU26203A is a digital signal processor that provides the function of Dolby Pro Logic II, Bass Management, Multi channel input, and 5-band PEQ function. The applications of NJU26203A are suitable for multi channel products such as Car Audio, DVD Receiver and speakers system. Features NJU26203AV -Software Dolby Pro Logic II (Max 5.1ch Output) Bass Management Multi channel input 5-band PEQ Center Mixer, Rear Center Mixer Master Volume -Hardware 24bit Fixed-point Digital Signal Processing Maximum Clock Frequency : 12.288MHz(Standard), built-in PLL Circuit Digital Audio Interface : 4 Input ports / 4 Output ports Digital Audio Format : I2S 24bit, left-justified, right-justified, BCK : 32fs/64fs Master / Slave Mode Microcomputer Interface I2C Bus (Standard-mode/100kbps, Fast-mode/400kbps) 4-Wire Serial Bus (4-Wire: Clock, Enable, Input data, Output data) Operating Voltage : VDD = VDDPLL = 1.8V : VDDIO = 3.3V Input Terminal : +5.0V Input tolerant Package : SSOP44 (Pb-Free) * The detail hardware specification of the NJU26203A is described in the “ NJU26200 Series Hardware Data Sheet”. Ver.2008-12-10 -1- NJU26203A Hardware Block Diagram AD1/SDIN AD2/SSb DSP ARITHMETIC UNIT SCL/SCK SDA/SDOUT SERIAL HOST INTERFACE BCKO BCKO PROGRAM CONTROL LRO 2424-BIT ｘ 2424-BIT MULTIPLIER ALU RESETb MCK CLK SERIAL AUDIO INTERFACE TIMING GENERATOR / PLL L/Rout SDO1 SDO1 C/SWout C/SWout SDO2 SDO2 LS/RSout SDO3 SDO3 LB/RB /RBout SDO0 SDO0 Input Input SDI0~3 SDI0~3 ADDRESS GENERATION UNIT BCKI CLKOUT LRI PROC DATA RAM FIRMWARE ROM General I/O INTERFACE MUTEb MUTEb SEL WDC Fig. 1 NJU26203A Hardware Block Diagram -2- Ver.2008-12-10 NJU26203A Function Block Diagram L 4 Stereo L/R->LS/RS 5 Band PEQ SDO1 SDI0 R Pro Logic II L/R SW LFE Generator C SW LS/RS Delay SDI3 5 Band PEQ LS RS LB 5 Band PEQ Master Volume & Channel Trim Input Trimmer SDI2 Center Delay SDI1 Bass Management 6 Stereo L/R->C/SW L/R->LS/RS SDO2 5 Band PEQ 5 Band PEQ SDO3 5 Band PEQ Delay 5 Band PEQ SDO0 5 Band PEQ SDO1 RB Noise Generator Smooth Control *Center Mix is effective only at the time of 4ch Stereo Mode or Multi Input Mode choice. *LFE Generator ON/OFF is effective only at the time of 4ch Stereo Mode choice. Fig. 2 NJU26203A Function Block Diagram (Firmware) L 4 Stereo L/R->LS/RS SDI0 R SW LFE Generator SW LS/RS Delay L/R C LS RS LB 5 Band PEQ Master Volume & Channel Trim Pro Logic II Center Delay Input Trimmer Bass Management SDI1 5 Band PEQ SDO2 5 Band PEQ 5 Band PEQ SDO3 5 Band PEQ Delay 5 Band PEQ SDO0 RB Noise Generator Smooth Control Fig. 3 NJU26203A Function Block Diagram (Stereo Input) Ver.2008-12-10 -3- NJU26203A L 5 Band PEQ SDO1 SDI0 R LFE Output Trim LS/RS C SW LS/RS Delay SDI3 C/SW 5 Band PEQ LS RS LB 5 Band PEQ Master Volume & Channel Trim Input Trimmer SDI2 C Bass Management SDI1 Center Delay L/R SDO2 5 Band PEQ 5 Band PEQ SDO3 5 Band PEQ Delay 5 Band PEQ SDO0 RB Noise Generator Smooth Control Fig. 4 NJU26203A Function Block Diagram (Multi channel input) L 5 Band PEQ SDO1 SDI0 R 5 Band PEQ C SW LS/RS Delay LS RS LB 5 Band PEQ Master Volume & Channel Trim Input Trimmer Bass Management SDI1 6 Stereo L/R->C/SW L/R->LS/RS SDO2 5 Band PEQ 5 Band PEQ SDO3 5 Band PEQ Delay 5 Band PEQ SDO0 RB Noise Generator Smooth Control Fig. 5 NJU26203A Function Block Diagram (Stereo Input, NON-FADER (6ch Stereo)) -4- Ver.2008-12-10 NJU26203A Pin Configuration SDI3 1 44 VDD SDI2 2 43 VSS SDI1 3 42 VSSIO SDI0 4 41 VDDIO LRI 5 40 SDO0 VDDIO 6 39 SDO1 BCKI 7 38 SDO2 VSS 8 37 SDO3 VDD 9 36 LRO TEST 10 35 BCKO 34 MCK 33 VDDIO NJU26203A MUTEb 11 WDC 12 PROC 13 32 SDA/SDOUT VSSIO 14 31 SCL/SCK VDDIO 15 30 AD2/SSb SEL 16 29 AD1/SDIN VDDPLL 17 28 TEST VSSPLL 18 27 TEST VSS 19 26 TEST VDD 20 25 RESETb CLKOUT 21 24 VDDIO CLK 22 23 VSSIO SSOP44 Fig. 6 NJU26203A Pin Configuration Ver.2008-12-10 -5- NJU26203A Pin Description Table 1 Pin Description Pin No. 1 2 3 4 5 6 7 8 9 Symbol SDI3 SDI2 SDI1 SDI0 LRI VDDIO BCKI VSS VDD I/O I I I I I I - 10 TEST * I 11 12 MUTEb * WDC * I OD 13 PROC * I 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 VSSIO VDDIO SEL VDDPLL VSSPLL VSS VDD CLKOUT CLK VSSIO VDDIO RESETb TEST TEST TEST AD1/SDIN AD2/SSb SCL/SCK SDA/SDOUT VDDIO MCK BCKO LRO SDO3 SDO2 SDO1 SDO0 VDDIO VSSIO VSS VDD I O I I I I I I I I I/O O O O O O O O - Function Audio Data Input ch.3 (LS/RS) Audio Data Input ch.2 (C/SW) Audio Data Input ch.1 (L/R) Audio Data Input ch.0 (L/R) LR Clock Input I/O Power Supply +3.3V Bit Clock Input DSP Core Power Supply GND DSP Core Power Supply +1.8V for test connect with VSSIO through 3.3-ohm resistance. Master Volume Status after reset ‘1’: 0dB, ‘0’: Mute Watchdog Clock output pin (Open drain output) Signal Processing after reset ‘1’: Normal Processing, ‘0’: Waiting for a Command without Processing I/O Power Supply GND I/O Power Supply +3.3V 2 Host Interface Selection ‘1’: Serial Interface, ‘0’: I C bus PLL Power Supply +1.8V PLL Power Supply GND DSP Core Power Supply GND DSP Core Power Supply +1.8V OSC Clock Output OSC Clock Input (12.288MHz) I/O Power Supply GND I/O Power Supply +3.3V Reset (RESETb=’0’: DSP Reset) for test (connect to VDDIO) for test (connect to VSSIO) for test (connect to VSSIO) 2 2 I C Address (I C mode) / Serial In (4-wire serial mode) 2 2 I C Address (I C mode) / Serial enable (4-wire serial mode) 2 2 I C SCL (I C mode) / Serial clock (4-wire serial mode) 2 2 I C SDA (I C mode) / Serial Out (4-wire serial mode) I/O Power Supply +3.3V A/D, D/A clock output (buffer output of a CLK pin) Bit Clock Output LR Clock Output Audio Data Output ch.3 (LS/RS) Audio Data Output ch.2 (C/SW) Audio Data Output ch.1 (L/R) Audio Data Output ch.0 (LB/RB) I/O Power Supply +3.3V I/O Power Supply GND DSP Core Power Supply GND DSP Core Power Supply +1.8V Note : I : Input O : Output OD : Open Drain Output I/O : Bi-directional Pins symbol with * : Connect with VDDIO or VSSIO through 3.3kΩ resistance -6- Ver.2008-12-10 NJU26203A Audio Interface The NJU26203A audio interface provides industry serial data formats of I2S, MSB-first Left-justified or MSB-first Right-justified. The NJU26203A audio interface provides four data inputs, SDI0, SDI1, SDI2 and SDI3, and four data outputs, SDO0, SDO1, SDO2 and SDO3 as shown in table 2 and 3. The input serial data is selected by the firmware command. Table 2 Serial Audio Input Pin Pin No. Symbol 4 3 2 1 SDI0 SDI1 SDI2 SDI3 Description Stereo input Multi channel input Audio Data Input (L/R) Audio Data Input (L/R) (SDI0/SDI1 pin select) (SDI0/SDI1 pin select) None Audio Data Input 2 (C/SW) None Audio Data Input 3 (LS/RS) Table 3 Serial Audio Output Pin Pin No. Symbol Description 40 SDO0 Audio Data Output 0 (LB/RB) 39 SDO1 Audio Data Output 1 (L/R) 38 SDO2 Audio Data Output 2 (C/SW) 37 SDO3 Audio Data Output 3 (LS/RS) Host Interface The NJU26203A can be controlled via Serial Host Interface (SHI) using either of two serial bus formats : I2C bus or 4-Wire serial bus. Data transfers are in 8 bits packets (1 byte) when using either format. The SHI operates only in a SLAVE fashion. A host controller connected to the interface always drives the clock (SCL / SCK) line and initiates data transfers, regardless of the chosen communication protocol. The detail I2C bus and 4-Wire Serial bus information are described in the ‘NJU26200 Series Hardware Data Sheet’. Table 4 Serial Host Interface Pin Descriptions Pin No. Symbol Setting Low 16 SEL High Table 5 Pin No. Serial Host Interface Pin Description Symbol 2 I C bus Interface 4-Wire Serial Interface I C Address Select Bit1 2 I C Address Select Bit2 Serial Clock Serial Data Input/Output (Open Drain output) Serial data input Slave select Serial Clock Serial data output (CMOS Output) 2 29 30 31 (I C /Serial) AD1/SDIN AD2/SSb SCL/SCK 32 SDA/SDOUT Host Interface I2C Bus Interface 4-Wire Serial Interface 2 2 Note: When I C Bus is selected, the SDA/SDOUT pin is a bi-directional Open Drain output. This pin, which is assigned 2 for I C Bus, requires a pull-up resistance. When 4-Wire Serial bus is selected, the SDA/SDOUT pin is CMOS output. The SDA/SDOUT pin isn’t 5.0V Input tolerant. Ver.2008-12-10 -7- NJU26203A I2C Bus When the NJU26203A is configured for I2C bus communication in SEL=”Low”, the serial host interface transfers data on the SDA pin and clocks data on the SCL pin. The SDA is an open drain pin requiring a pull-up resistance. Pins AD1 and AD2 are used to configure the seven-bit SLAVE address of the serial host interface. (Table 6) 2 Table 6 I C Bus Interface Slave address bit7 0 0 0 0 bit6 0 0 0 0 bit5 1 1 1 1 Start bit bit4 1 1 1 1 AD2 bit2 0 0 1 1 bit3 1 1 1 1 AD1 bit1 0 1 0 1 R/W bit Slave Address ( 7bit ) R/W bit0 R/W ACK * SLAVE address is 0 when AD1/2 is “Low”. SLAVE address is 1 when AD1/2 is “High”. * SLAVE address is 0 when R/W is “W”. SLAVE address is 1 when R/W is “R”. Note: Both “Standard-Mode (100kbps)” and “Fast-Mode (400kbps)” data transfer rate are supported. 4-Wire Serial Interface The serial host interface can be configured for 4-Wire Serial bus communication by setting SEL1=”High” during the Reset Sequence initialization. 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 SSb = “Low”. 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 always CMOS output. SDOUT does not require a pull-up resistance. SSb SCK bit7 SDIN bit6 bit5 bit1 MSB SDOUT unstable bit7 bit0 LSB bit6 bit5 bit1 bit0 unstable Fig. 7 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”. -8- Ver.2008-12-10 NJU26203A Pin setting The NJU26203A operates default command setting after resetting the NJU26203A. In addition, the NJU26203A restricts operation at power on by setting PROC pin and MUTEb pin. These pins are input pin. However, these pins operate as bi-directional pins. Connect with VDDIO or VSSIO through 3.3kΩ resistance. Table 7 Pin No. 13 11 Pin setting Symbol Setting “High” PROC “Low” MUTEb “High” “Low” Function The NJU26203A operates default setting after reset. The NJU26203A does not operate after reset. Sending start command is required for starting operation. Master volume is set 0dB after reset. Master volume is set mute after reset. WatchDog Clock The NJU26203A outputs clock pulse through WDC (Pin No.12) during normal operation. The WDC clock is useful to check the status of the NJU26203A operation. For example, a microcomputer monitors the WDC clock and checks the status of the NJU26203A. When the WDC clock pulse is lost or not normal clock cycle, the NJU26203A does not operate correctly. Then reset the NJU26203A and set up the NJU26203A again. The WDC clock is able to be variable for 0msec to 100msec by command. Default setting of WDC clock is 100msec. The WDC pin is open drain output. The WDC pin setting (Table 8) Table 8 WDC pin setting Pin No. Symbol 12 WDC WDC pin is used. WDC pin is not used. Setting Connect with VDDIO through 3.3kΩ resistance. Connect with VSSIO through 3.3kΩ resistance. Do not open WDC pin. Note: The cycle of WDC output is rough. Because WDC output inserts in the process of sound processing. In slave mode, when there is no input of BCKI/LRI, WDC can’t output. It is required to set up a sampling rate correctly. Ver.2008-12-10 -9- NJU26203A Firmware Command Table Host processor can control the NJU26203A via I2C bus or 4-Wire serial bus interface. The following table summarizes the available user commands. Table 9 Command Table No. Command Description 1 Set Task Command 2 System State Command 3 Sample rate Select Command 4 Smooth Control Config Command 5 Master Volume Control Command 6 Channel Trim Control Command 7 Input Trim Control Command 8 LFE Trim Control Command 9 Center Mix Trim Control Command 10 Pro Logic II Mode Command 11 Center Delay Control Command 12 Surround Delay Control Command 13 Bass Management Config Command 14 PNG Mode Command 15 EQ Channel Select Command 16 EQ Mode Select Command 17 EQ f0 Control Command 18 EQ Q Control Command 19 EQ Gain Control Command 20 Watch Dog Timer Command 21 LB ch Output Select Command 22 LFE f0 Control Command 23 LB Delay Control Command 24 Firmware Version Number Request Command 25 DSP Reset Command 26 Start Command 27 Nop Command Notes : In respect to detail command information, request New Japan Radio Co., Ltd. and permission of a licenser (Dolby) is required. Response of status NJU26203A returns the response of 4 types to the host controller. Table 10 Response of status Response Status : Command Accepted Status : Command Error Status : Command Process Status : Not Ready - 10 - Command 0x80 0x81 0x82 0x83 Remark Reception OK Reception ERROR Command processing Initialization Ver.2008-12-10 NJU26203A License Information The Word “DOLBY”, “Pro Logic II” and the double D mark are trademarks of Dolby Laboratories. The NJU26203A 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. Ver.2008-12-10 - 11 -