Most wireless transmission devices currently use Bluetooth technology. With the innovation of Bluetooth technology in recent years, Bluetooth can be used for large-bandwidth data and audio transmission. Sony recently launched a home theater audio HT-S40R, which supports multiple audio transmission methods such as HDMI ARC, optical fiber, 3.5mm stereo interface, USB flash drive, Bluetooth, etc., of which Bluetooth transmission uses Actions ATS2853 Bluetooth audio SoC. Sony HT-S40R home theater audio consists of a subwoofer, a front bar subwoofer, two rear surround speakers and a rear receiver to form a 5.1-channel system, providing an immersive gaming and movie-watching experience. The front and rear speakers are connected via a wireless receiver, which is convenient to use and solves the wiring problem, making the home decoration more beautiful.

The subwoofer is also equipped with the Actions ATS2853 Bluetooth audio SoC for wireless audio transmission to the host. The ATS2853 integrates a high-performance transceiver, a feature-rich baseband processor, and a Bluetooth audio mode; integrates a high-quality, low-latency SBC decoder and a CVSD codec; supports PLC technology and AEC, providing high audio quality in voice calls. )

We know that many audio products from brands such as Sony, Honor, QCY, Swonder, Mammoth, Lenovo, Rode, Xiaomi, etc. on the market have adopted Actions Technology's solutions. SONY HT-S40R, Honor's Disney portable Bluetooth speaker, and Swonder Alpha waterproof bone conduction headphones all use Actions ATS2853 Bluetooth audio SoC solutions.

Application scenario diagram

Development board diagram

Solution diagram

Core technology advantages

Actions ATS2853 Bluetooth audio SoC supports dual-mode Bluetooth 5.3 and is a highly integrated single-chip Bluetooth audio device. It can also be used as a traditional dual speaker and card reader for data transmission.

Actions ATS2853 integrates high-performance transceivers, feature-rich baseband processors and Bluetooth audio modes; integrates high-quality, low-latency SBC decoders and CVSD codecs; supports PLC technology and AEC, providing high audio quality in voice calls. Sony HT-S40R front soundbar and two rear surround speakers are active speakers, and the subwoofer and rear receiver transmit audio signals through a separate wireless transmission module, and adopt the same solution, including Texas Instruments PCM1808 analog-to-digital converter, TAS5538 digital audio processor, TAS5614LA Class D power amplifier, etc. The subwoofer is also equipped with Actions ATS2853 Bluetooth audio SoC, which is used for wireless audio transmission with Bluetooth devices such as mobile phones and computers.

Swonder Alpha waterproof bone conduction headphones are IP68 waterproof and can be used in various water sports such as swimming, surfing, and snorkeling. They are equipped with an oversized bone conduction vibrator, Actions audio-grade chips, and Swonder professional-quality tuning, bringing a high-quality audio experience with three-band balance. The headphones have a built-in 32G large memory and support Bluetooth 5.3, so they can be used independently without a mobile phone, and have a stable and fast transmission experience.

Swonder Alpha waterproof bone conduction earphones have a built-in 250mAh lithium battery. The earphones' main control chip is Actions ATS2853 Bluetooth audio SoC, which integrates a high-performance transceiver, a feature-rich baseband processor and Bluetooth audio mode; the power amplifier uses ANATEK ANT8112 AB/D class dual-mode audio amplifier, with two built-in speakers to drive the two sides respectively; the speaker cavity adopts a double-layer structure design and is equipped with an ultra-large bone conduction vibrator with a diameter of about 16mm.

Solution Specifications

Actions Technology's Bluetooth audio SoC chip series products are mainly dual-mode Bluetooth 5.3 solutions with high sound quality, low latency, and multiple connections.

Portable audio and video SoC chip series, intelligent voice interaction SoC chip series, etc. are widely used in smart watches, soundbar TV speakers, Bluetooth speakers, Bluetooth headphones, Bluetooth voice remote controls, Bluetooth transceivers, smart education, smart offices and other fields.

ATS2853 integrates a complete set of power management circuits, flexible memory configuration, matrix LED controller for UI display and rich interfaces, such as SD/SDIO/SPI/USB2.0 FS/UART/TWI/PWM/IR/I2S TX&RX, etc.

ATS2853 only supports classic Bluetooth, and can use the TWS mechanism to realize highly integrated and extremely cost-effective soundbar+subwoofer products.

Solution name: ATS2853

• ATS285x master control, m4k MCU SoC

• Support external SPI NOR Flash

• Onboard Bluetooth antenna

• 1 headphone jack

• 1 Line input jack

• 1 MIC input

• 1 SD card slot

• 6 PWM lights, 1 power indicator

• 8 ADC buttons, 1 reset button

• Support dot matrix screen, segment screen and digital tube

• USB 2.0 high-speed device and USB host interface

• Onboard PA amplifier chip

• Onboard charging chip

• Two power supply methods: USB, battery

ASET algorithm introduction

ASET is a sound effect adjustment system independently developed by Actions, which is a tool algorithm for real-time and efficient adjustment of speaker sound effects. Provide customers with a series of sound effects adjustments for speaker products.

ASET sound effects provide a friendly adjustment interface and support online debugging; the sound effects adjustment is simple, convenient and efficient.