AAC305 series speech recognition chip

Product overview

The AAC305 series is a dedicated offline speech recognition SOC that supports analog microphone audio input and audio decoding to play audio files. The chip integrates a 240MHz 32bit RISC processor, FPU, audio ADC and audio DAC, among other peripherals.

The chip has integrated offline speech recognition algorithm, which can be quickly applied to smart home, smart lighting, smart small appliances and other products.

Application areas:

Smart Home

Smart small appliances

Intelligent lighting

Intelligent fan

Intelligent air conditioning

Intelligent remote control

Product function introduction

Kernel

High-performance 32-bit 240MHz RISC core

Support DSP instructions, support FPU floating-point arithmetic

Storage

Built-in SRAM

Built-in 8Mbit FLASH

Audio

Supports 1 16-bit analog microphone input

Supports 2 digital microphone inputs

Supports 2 16-bit DAC outputs

ADC and DAC sample rates support 8KHz / 11.025KHz / 16KHz / 22.05KHz / 24KHz / 32KHz / 44.1KHz/ 48KHz

Peripherals

Four multi-function 16-bit timers supporting capture and PWM mode

1 USB 2.0 Full Speed (OTG) controller

2 PCM/IIS for external digital audio, Host and Device modes supported

Two 16-bit PWM motor controllers

Two SPI interfaces support Host and Device modes

1 hardware IIC interface, support host and device mode

3 full duplex UARTs, UART0 and UART1 support DMA mode

Support 10-bit ADC

External wake-up/interrupt on all GPIOs

1 SD card host controller

Built-in Cap Sense Key Controller

SDK

Provides a complete library of end-side speech recognition algorithms.

Provides audio playback and UART communication protocol

Encapsulation

QSOP24/SOP16