ADAU1442

Data Sheet SigmaDSP Digital Audio Processor with Flexible Audio Routing Matrix ADAU1442/ADAU1445/ADAU1446 FEATURES Fully programmable audio digital signal processor (DSP) for enhanced sound processing Features SigmaStudio, a proprietary graphical programming tool for the development of custom signal flows 172 MHz SigmaDSP core; 3584 instructions per sample at 48 kHz 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 dB DNR) Stereo S/PDIF input and output Supports serial and TDM I/O, up to fS = 192 kHz Multichannel byte-addressable TDM serial port Pool of 170 ms digital audio delay (at 48 kHz) Clock oscillator for generating master clock from crystal PLL for generating core clock from common 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) Commercial audio processing FUNCTIONAL BLOCK DIAGRAM MP[3:0]/ SPI/I2C* SELFBOOT MP[11:4] ADC[3:0] XTALI XTALO ADAU1442/ ADAU1445/ ADAU1446 1.8V ...