Audio codec ADAU1861

The ADAU1861 is a codec with three inputs and one output that incorporates two digital-signal processors (DSPs). The path from the analog input to the DSP core to the analog output is optimized for low latency. APPLICATIONS Automotive audio systems Digital audio effects processors Programmable FastDSP audio processing engine Up to 768 kHz sample rate Biquad filters, limiters, volume controls, mixing Tensilica HiFi 3z DSP core Quad MAC per cycle: 24 × 24-bit multiplier and 64-bit accumulator Flexible power operation mode: 24.576 MHz, 49.152 MHz, 73.728 MHz, and 98.304 MHz 336 kB total memory JTAG debug and trace Low latency, 24-bit ADCs, and DAC 106 dB SNR (signal through ADC with A-weighted filter) 110 dB combined SNR (signal through DAC and headphone with A-weighted filter) Programmable double precision MAC engine for maximum 24- stage equalizer Serial-port sample rates from 8 kHz to 768 kHz 5 μs group delay (fS = 768 kHz) analog in to analog out with FastDSP bypass (zero instructions) 3 differential or single-ended analog inputs, configurable as microphone or line inputs 8 digital microphone inputs Analog differential audio output, configurable as either line output or headphone driver 2 PDM output channels PLL supporting any input clock rate from 30 kHz to 36 MHz 4 channel asynchronous sample rate converters (ASRCs) 2, 16-channel serial audio ports supporting I2S, left-justified, right-justified, or up to TDM16 (TDM12 in turbo mode) 8 interpolators and 8 decimators with flexible routing Power supplies Analog AVDD at 1.8 V typical Digital I/O IOVDD at 1.1 V to 1.98 V Digital DVDD at 0.85 V to 1.21 V Headphone HPVDD_L at 1.2 V to AVDD Control/communication interfaces