Features

• Halo Core™ digital signal processor

— Dual MAC, 100 MHz audio signal processor

— 280 kB program memory, 768 kB data memory

— FFT, LMS, and FIR accelerators

• Event logger with time-stamp and interrupt functions

• Integrated multichannel 24-bit audio processor

— 104 dB signal-to-noise ratio (SNR) mic input (16 kHz)

• Programmable wideband, multimic audio processing

• Multichannel isochronous sample-rate conversion

• Up to four analog or digital microphone (DMIC) inputs

• Ultrasonic signal detection and demodulation

• Digital (PDM) output interface

• Two multichannel audio serial ports (ASP), supporting

data formats up to 192 kHz, 32 bits

• Flexible clocking configuration, incorporating a low-power

frequency-locked loop (FLL)

• Configurable functions on up to 16 general-purpose

input/output (GPIO) pins

• Integrated regulator and charge-pump circuits

— Switchable microphone supply/bias outputs

• WLCSP and QFN package variants, 0.4 mm pitch

Applications

• Smartphones and mobile accessories

• Always-on voice-triggered devices