ADAU1442 Datasheet | Analog Devices

Data Sheet Sigma DSP Digital Audio Processor with Flexible Audio Routing Matrix ADAU1442/ADAU1445/ADAU1446 Features Fully programmable audio digital signal processor (DSP) for enhanced sound processing Features Sigma Studio, a proprietary graphical programming tool for the development of custom signal flows 172 MHz Sigma DSP core; 3584 instructions per sample at 48 k Hz 4k parameter RAM, 8k data RAM Flexible audio routing matrix (FARM) 24-channel digital input and output Up to 8 stereo asynchronous sample rate converters (from 1:8 up to 7.75:1 ratio and 139 d B DNR) Stereo S/PDIF input and output Supports serial and TDM I/O, up to f S = 192 k Hz Multichannel byte-addressable TDM serial port Pool of 170 ms digital audio delay (at 48 k Hz) Clock oscillator for generating master clock from crystal PLL for generating core clock from mon audio clocks I2C and SPI control interfaces Standalone operation Self-boot from serial EEPROM 4-channel, 10-bit auxiliary control ADC Multipurpose pins for digital controls and outputs Easy implementation of available third-party algorithms On-chip regulator for generating 1.8 V from 3.3 V supply 100-lead TQFP and LQFP packages Temperature range: - 40°C to +105°C APPLICATIONS Automotive audio processing Head units Navigation systems Rear-seat entertainment systems DSP amplifiers (sound system amplifiers) mercial audio processing FUNCTIONAL BLOCK DIAGRAM MP[3:0]/ SPI/I2C- SELFBOOT MP[11:4] ADC[3:0] XTALI XTALO ADAU1442/ ADAU1445/ ADAU1446 1.8V REGULATOR I2C/SPI CONTROL INTERFACE AND SELF-BOOT MP/ AUX ADC CLOCK PLL OSCILLATOR CLKOUT SPDIFI SDATA_IN[8:0] (24-CHANNEL DIGITAL AUDIO INPUT) BIT CLOCK† (BCLK) FRAME CLOCK†...