We are pleased to announce that as of August 13, 2015, Qualcomm Global Trading Pte. Ltd., a subsidiary of Qualcomm Incorporated, has completed its acquisition of CSR plc. For more information, please see the press release .


CSR8350™ is a Bluetooth® v4.1 single-chip radio and baseband IC with advanced audio capabilities for Bluetooth enabled car audio systems, in-vehicle navigation and PND.

CSR8350’s dual-mode radio enables it to connect to the billions of Bluetooth products already on the market, as well as a new generation of Bluetooth low energy devices.  A powerful DSP provides support for advanced audio processing, including HD quality hands-free telephony, streaming audio, and optionally aptX® decoding and cVc® echo cancellation.  Integrated peripherals reduce the number of external components required, including external codec, SMPS, LDOs, balun or program memory, ensuring minimum production costs.

CSR8350 supports CSR Wake-on Smart™, enabling the host CPU to be powered down and reducing energy consumption for Bluetooth Smart use cases. When used with CSR Synergy® host software, the CSR8350 provides a system fully qualified to the Bluetooth v4.1 specification for data and voice communications.


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  • Bluetooth® Smart Ready
  • Bluetooth v4.1 specification compliant  
  • 80MHz RISC MCU and 80MIPS Kalimba DSP         
  • Internal ROM, serial flash memory and EEPROM interfaces         
  • Stereo/Dual-mono codec with 2 microphone inputs and stereo audio output     
  • Radio includes integrated balun               
  • CSR's latest 2-mic cVc® handsfree algorithm for narrowband and wideband in-car voice connections, including wind noise reduction           
  • Embedded SBC and aptX® codec (decoder and encoder) for A2DP
  • Embedded wide band speech support for handsfree profile
  • 2 x PCM/I²S digital audio interfaces
  • Serial interfaces: UART, USB 2.0 (full-speed), I²C and SPI              
  • Integrated dual switch-mode regulators and linear regulators
  • External crystal load capacitors not required for typical crystals
  • 64-lead QFN 9 x 9 x0.9mm 0.5mm pitch
  • Green (RoHS compliant and no antimony or halogenated flame retardants)

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