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© Cambridge Silicon Radio Limited 2012-2015 CS-224993-UGP8
www.csr.com
BlueCore ADK Audio Source Application User Guide
Contents
Document History ......................................................................................................................................................... 2
Contacts ........................................................................................................................................................................ 2
Trademarks, Patents and Licences .............................................................................................................................. 2
Life Support Policy and Use in Safety-critical Compliance............................................................................................ 2
Performance and Conformance .................................................................................................................................... 2
Contents ....................................................................................................................................................................... 3
1. Introduction ............................................................................................................................................................ 4
2. Getting Started....................................................................................................................................................... 5
2.1. Flashing the Audio Source Application onto Suitable Hardware ..................................................................... 5
2.2. Making a Bluetooth Connection with Another Device ..................................................................................... 6
2.3. USB Mode ...................................................................................................................................................... 6
2.4. Analogue Mode .............................................................................................................................................. 8
2.5. SPDIF Mode ................................................................................................................................................... 8
3. To Set Up the xIDE Project Environment ............................................................................................................... 9
3.1. Supporting Different Input Source Modes ....................................................................................................... 9
3.2. Supporting Dual Stream ................................................................................................................................. 9
3.3. Enabling Button Operation ............................................................................................................................. 9
3.4. Enabling LED Operation ................................................................................................................................. 9
3.5. Enabling Debug Output ................................................................................................................................ 10
3.6. Supporting Different Development Boards ................................................................................................... 10
3.7. Adding Microsoft Lync Support ..................................................................................................................... 10
3.8. Changing Mic Channel from 48 kHz to 16 kHz USB Rate ............................................................................ 10
3.9. Including Power Readings for Analogue Input Mode .................................................................................... 10
3.10. Configuring A2DP Codecs in the Application ............................................................................................ 10
4. USB Implementation ............................................................................................................................................ 11
4.1. USB Device Enumeration Under USB Mode ................................................................................................ 11
4.2. USB Host Communication ............................................................................................................................ 11
5. Dual Stream ......................................................................................................................................................... 17
5.1. Using Dual Stream in the Audio Source Device ........................................................................................... 17
5.2. Codecs Used in Dual Stream Mode ............................................................................................................. 17
5.3. Behaviour of Dual Stream Implementation ................................................................................................... 17
5.4. Limitations of Dual Stream Implementation .................................................................................................. 18
6. Audio Source States ............................................................................................................................................ 19
7. Man Machine Interface ........................................................................................................................................ 20
Appendix A PS Key Configuration ............................................................................................................................ 21
Appendix B Configuration of LED and Button Patterns ............................................................................................ 46
Appendix C Implementation Details .......................................................................................................................... 47
Appendix D USB Dongle ADK Host Application ....................................................................................................... 48
Document References ................................................................................................................................................ 49
Terms and Definitions ................................................................................................................................................. 49
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