NJU26207 Datasheet | New Japan Radio

.. Dolby Volume Decoder General Description The NJU26207 is a digital signal processor that provides the function of Dolby Volume. Dolby Volume solves volume level difference among channels, input sources and etc. The mix balance is reproduced by high or low volume level. The applications of NJU26207 are suitable for Digital TV, Front Surround Speaker and speakers system. - Package Features -Software Dolby Volume (512FFT Window / 20Band) Delay Master Volume / Balance Control Sampling Frequency : 32k Hz, 44.1k Hz, 48k Hz 2 Input channels, 2 Output channels -Hardware 24bit Fixed-point Digital Signal Processing Maximum Clock Frequency : 12.288MHz(Standard), built-in PLL Circuit Digital Audio Interface : 4 Input ports / 3 Output ports Digital Audio Format : I2S 24bit, left-justified, right-justified, BCK : 32fs/64fs Master / Slave Mode Microputer 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 NJU26207 is described in the “ NJU26200 Series Hardware Data Sheet”. NJU26207V Ver.2008-12-03 -1- Hardware Block Diagram .. AD1/SDIN AD2/SSb DSP ARITHMETIC UNIT SCL/SCK SERIAL HOST INTERFACE PROGRAM CONTROL SERIAL AUDIO INTERFACE BCKO BCKO LRO L/Rout SDA/SDOUT 2424-BIT ｘ 2424-BIT MULTIPLIER RESETb MCK CLK CLKOUT ALU SDO0 SDO0 SDO1 SDO1 SDO2 SDO2 (L+R)/2out (L+R)/2out Monitor L/R L/R TIMING GENERATOR / PLL in ADDRESS GENERATION UNIT SDI0~3 SDI0~3 BCKI LRI PROC DATA RAM FIRMWARE ROM General I/O INTERFACE MUTEb SEL WDC Fig. 1 NJU26207 Hardware Block Diagram Function Block Diagram Delay L/R(SDI0) L/R(SDI1) L/R(SDI2) L/R(SDI3) Dolby Volume Fig. 2 NJU26207 Function Block Diagram (Firmware) Output Trimmer (Master&Balance) L/R(SDO0) (L+R)/2(SDO1) Monitor...