Analogue Audio Dongle v1
This example Bluetooth design provides a very cost effective and easy to use solution to allow remote stereo headphones/speakers to be linked wirelessly to a hi-fi or music player. It is available free to purchasers of the appropriate development tools. Key features include:

1. based on highly integrated BlueCore3-Multimedia device with Bluetooth radio, baseband, programmable microcontroller and DSP
2. low power consumption: dissipates <95mW when streaming audio
3. no battery needed when used with many MP3 players - solution can run from the MP3 player power out port
4. 3.5mm audio input/output for portable music players
5. phono audio input/output for home hi-fi adaptors
6. internal stereo A/D converters for lowest possible cost
7. compatible with an external CODEC for hi-fi quality sound
8. full hardware example design available
9. full source code supplied with the BlueLab SDK
10. extensively tested with many different Bluetooth stereo headphone solutions

More information: https://www.csrsupport.com/AnalogueAudioAdaptor (note that you need to register on CSR's support site to see some information - call your local office if you have any problems)

Note: CSR is continually updating its example designs: there may be newer variants available, call your local CSR office to ensure you have the latest information.

Back to top

Voice Dongle
This example Bluetooth design provides a very cost effective and easy to use solution to support the connection of a headset accessory on a PC, for VoIP calls - available free to purchasers of the Voice Dongle Solution Development System (VD-SDS-1A). Based on the DSP-equipped BlueCore3-Multimedia External, the design is the first Bluetooth VoIP USB dongle to offer a 'no software' solution: simply plug in the dongle, and press the pairing button to pair with the headset, and the link is running instantly and able to take a call.

Key features include:

• Bluetooth function based on highly-integrated single chip with DSP, linear regulator and audio CODEC
• fully interoperability tested application software with ability to automatically pair with any commercially-available Bluetooth headset, and automatically connect to the PC without installation of PC software
• full support for HFP/HSP connection and audio connection management, HID keyboard and call management
• configurable HMI
• supports 8 kHz, 16-bit mono audio
• development System includes Voice Dongle Software Development Kit (SDK), full reference design, development board, source code, interoperability test results and user guide.

More information: https://www.csrsupport.com/AudioSolutions (note that you need to register on CSR's support site to see some information - call your local office if you have any problems)

Note: CSR is continually updating its example designs: there may be newer variants available, call your local CSR office to ensure you have the latest information.

Back to top

BlueVOX-QFN
CSR's latest headset design sets a new high in battery life, combined with a new low in electronic bill-of-materials costs (eBOM). Offering talk times of up to 11 hours from a small lithium cell, the eBOM is less than $6 in production volumes!  

This ground-breaking blend of performance and economy is not at the expense of quality. Call clarity and range is superb, with a MOS voice quality score of 3.7, thanks to CSR's innovative QFN-packaged Bluetooth silicon with its sophisticated 2.0+EDR radio, and eSCO support (which can eliminate annoying pops and clicks in difficult radio environments).

The design comes in a ready-to-use form. Use CSR's PCB design as it is, and the electronics element of your new headset product can be fixed within a few hours of receiving the development kit. This will not compromise your brand: the design is complete and interoperability tested - yet still highly software-configurable. User-configurable features include the functionality of button presses, LED flashing, pairing operation, etc.

More information: www.csrsupport.com/BlueVOXQFN (note that you need to register on CSR's support site to see some information - call your local office if you have any problems)

Note: CSR is continually updating its example designs: there may be newer variants available, call your local CSR office to ensure you have the latest information.

Back to top

BlueVOX1 CVC
CSR's solution for a high-end mono Bluetooth headset with CVC (Clear Voice Capture software) performing echo and Noise Suppression. All the elements needed to create a headset with supreme audio quality is included in the  BCVC-SDS-1A  Solution Development System (SDS).  It provides a state-of-the-art solution that can be put into production as it is, or adapted to meet your audio quality needs.

Key features include:

• a single-chip solution with integrated CODEC, and DSP (BlueCore3-Multimedia external)
• v4 of CSR's established interoperable headset application software
• CVC® (Clear Voice Capture software) v2.7.5 providing configurable echo and Noise Suppression
• CVC also allows very close spacing of microphone and speaker
• support for eSCO (to allow the retransmission of corrupted voice data)
• configurable HMI  including multi-colour LED support
• side tone generation for enhanced user experience
• BlueVOX1 CVC Solution Development System that includes BlueVOX1 CVC Software Development Kit (SDK), full reference design, development board, source code, interop results and user guide.

More information: https://www.csrsupport.com/BlueVOX (note that you need to register on CSR's support site to see some information - call your local office if you have any problems)

Note: CSR is continually updating its example designs: there may be newer variants available, call your local CSR office to ensure you have the latest information.

Back to top

BlueTunes2
CSR's latest ready-to-apply stereo headphone design is available with the BlueTunes2 stereo headset development kit (part no BTN-002-2A). It combines the function of a Bluetooth headset with stereo headphone capability for playing music, supporting both MP3 and the Bluetooth SIG's SBC compression coding/decoding scheme. BlueTunes2 is based on CSR's latest generation BlueCore5-Multimedia, featuring an on-chip open source Kalimba DSP. The powerful 64 MIPS DSP performs echo and noise suppression when acting as a Bluetooth headset (and additionally offers eSCO for QoS). A wide range of other product enhancing software features are available from 3rd parties through CSR's eXtension partner program.

The Bluecore5-Multimedia offers the highest level of integration with on-chip radio and baseband, stereo CODEC, DSP, battery charger and SMPS. This offers the lowest BOM count and cost, while further enhancing the performance and features from previous BlueCore generations. The development kit comes with a music and VoIP USB dongles for streaming over Bluetooth from a PC, as well as an analogue audio adaptor board for streaming music over Bluetooth from MP3 players and hi-fi systems.  Along with CSR's BlueLab 3.6 software development suite and the CSR headset configurator tools (available separately) the BlueTunes2 development kit provides a very flexible and powerful development platform for designing advanced, high-quality, Bluetooth stereo and mono headsets based on the BlueCore5-Multimedia single chip Bluetooth audio solution.

A complementary technology to BlueTunes2 is the BlueCore Player MP3 solution, which allows you to stream audio wirelessly to stereo headphones.

More information: http://www.csrsupport.com/BlueTunes2 (note that you need to register on CSR's support site to see some information - call your local office if you have any problems)

Note: CSR is continually updating its example designs: there may be newer variants available, call your local CSR office to ensure you have the latest information.

Back to top