CC256XCQFN-EM: TI Bluetooth Stack Assisted A2DP Source Demo DataRate

Tim Gerbert89

Intellectual 300 points

Part Number: CC256XCQFN-EM

Hello,

I have a question regarding the TI Assisted A2DP_SRC demo with Bluetopia API:

Which data rate is used for A2DP (1Mbps or 2Mbps)?

Thanks and Regards

Tim

over 8 years ago

0 Hari Nagalla over 8 years ago

TI__Mastermind 27470 points

As per below link, it is 512 Kbits/s for stereo and 320 Kbit/s for mono.

processors.wiki.ti.com/.../CC256x_Advanced_Voice_and_Audio_Features

Thanks

0 Tim Gerbert89 over 8 years ago in reply to Hari Nagalla

Intellectual 300 points

Hi Hari,

Thanks for the answer. However, I'm more interested in the data rate over the air in case of A2DP streaming. Can you provide me any information?

Thanks and Regards

Tim

0 Vihang Parmar over 8 years ago

TI__Mastermind 29361 points

Tim,

Tim Gerbert89 said:
Which data rate is used for A2DP (1Mbps or 2Mbps)?

Different modulations in classic BT have different data rate. BR is 1Mbps, 2-EDR is 2Mbps and 3-EDR is 3Mbps.

Whether a BT link will use BR (GFSK) or EDR (2-EDR/3-EDR) rates, is not determined by any settings on the profile or application layer. When two BT devices connect, the data rate / modulation type will be negotiated at the LMP layer and the most suitable modulation will be used by the controller. This is not something that is controlled or accessed from the higher layers (like the A2DP profile).

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CC256XCQFN-EM: TI Bluetooth Stack Assisted A2DP Source Demo DataRate