CSRA68105 Bluetooth Audio Platform

High-performance, single-chip Bluetooth® audio SoC, designed for premium wireless speaker and headphone applications.

The CSRA68105 audio System-on-Chip (SoC) is designed and optimized to support innovation and feature differentiation in premium Bluetooth technology enabled headphones and speakers – including voice-enabled Bluetooth speakers and Real Time Operating System (RTOS) smart speakers.

This highly integrated SoC is engineered to include a comprehensive selection of connectivity, system processing, audio processing and power management resources. These features support OEMs in the development of products with superior audio quality, voice control, far-field echo cancellation, sensor processing and audio post processing. CSRA68105 raises the bar in terms of digital signal processor (DSP) processing power and advanced features on a single-chip RTOS platform.

CSRA68105 is a product of Qualcomm Technologies, Inc., and/or its subsidiaries.

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Product Brief

High-performance, single-chip solution for premium audio

A highly integrated SoC designed to support superior sound quality, with a fully qualified dual-mode Bluetooth 5 radio, integrated NFC, multi-processor subsystems, integrated power management and multiple advanced audio interfaces.

Offers 4x more DSP processing power than our CSR8675 premium SoC

Dual 240MHz Kalimba audio DSPs include a new ability for the DSP to dynamically reconfigure at runtime, and eliminate the need for external audio processing.

Flash-programmable memory for more flexibility

A dedicated 120MHz 32-bit OEM application processor is designed to provide programming resources and freedom for developing proprietary features.

Next gen ADK software designed to support ease of development

CSRA68105 comes with the next generation ADK 6 and features a comprehensive suite of software tools designed to support the development of audio applications and the configuration of sophisticated audio processing chains. ADK 6 includes a SIG-qualified Bluetooth stack, helping to reduce end-product development time, and improve ease of customisation.

CSRA68105 Block Diagram


  • Powerful quad-core processor architecture

    • Dedicated 120MHz 32-bit processor application subsystem
    • Dual-core 240MHz Kalimba DSP Audio subsystem
    • DSPs support downloadable capabilities from RAM/QSPI and pre-installed library functions from ROM
    • Further system processor with embedded Bluetooth protocol stack
    • Embedded ROM + RAM and external QSPI Flash
  • Variety of high definition audio interfaces

    • 2-ch 24-bit 109dBA line outputs
    • 2-ch 24-bit 100dBA line inputs
    • 2-ch 24-bit 96dBA class-H ground referenced headphone driver
    • 8-ch 108dBA PWM speaker outputs
    • 4x 384kHz 24-bit I2S
    • 4x 96kHz 24-bit SPDIF interfaces
  • Integrated Bluetooth 5 and NFC tag radios

    • Dual-mode Bluetooth BR/EDR and Bluetooth Low Energy
  • Pin-to-pin compatible with CSRA68100

  • Advanced power management with integrated SMPS & Li-Ion battery charger with USB type-C charger support

  • Rich array of interfaces including LED drivers and capacitive touch



CPU Clock Speed: 2x 120 MHz

CPU Cores: Dedicated customer application processor, System firmware processor


DSP Technology: 2x Qualcomm® Kalimba™ DSP, Qualcomm® Kymera™ DSP Framework

DSP Clock Speed: 2x 240 MHz


Bluetooth Version: Bluetooth 5.0

Class Support: Class 2, Class 1


Integrated NFC Radio: Tag mode, Peer-to-peer listener mode, NFC type II

General Audio

Audio Technology: Qualcomm® Broadcast Audio technology, Qualcomm® aptX™ audio technology

Qualcomm® aptX™ audio playback support: Qualcomm® aptX™, Qualcomm® aptX™ HD, Qualcomm® eXtension program

Audio Inputs: 2x low power ADC, 2x high-quality line level ADCs

Audio Playback

Audio outputs: 8-ch PWM audio outputs, 4x 24-bit SPDIF up to 192 kHz, 2x low power Class-H headphone drivers, 4x 24-bit I²S up to 192 kHz, 2x high-quality line level DAC outputs

Audio Recording

Microphone: Up to 8 digital mics

Sampling, Record: Up to 192kHz/24bit


Maximum Current: 1.8 A


Battery Type: Li-ion battery


Flash: Flexible QSPI Flash (external) programmable platform


Supported Interfaces: SDIO v3.0 host, USB device and host, I²C, SPI, UART


General Purpose I/Os: 63x

Summary: USB, UART, I²C/SPI, 2x audio line in, 13x XIO, 2x headphone out, 8x audio PWM out, 4x SPDIF in/out, 4x I2S, PCM in/out, 2x microphone in, 2x audio line out

ADC: 2-ch 100 dBA 24-bit ADC with microphone pre-amp, 8-96 kHz sample rates

DAC: 2-ch 109 dBA 24-bit DAC, 8-192 kHz sample rates

  1. 4x SPDIF, 4x I²S with programmable MCLK
  2. Internal mode, up to 200 mA; External mode, up to 1.8 A
  3. Programmable to be digital PIO, cap sense, ADC, DAC

CSRA68105, Qualcomm Broadcast Audio, Qualcomm aptX, Qualcomm Kalimba, and Qualcomm Kymera are products of Qualcomm Technologies, Inc. and/or its subsidiaries. Qualcomm Extension Program is a program of Qualcomm Technologies, Inc. and/or its subsidiaries.