TI Bluetooth Audio Reference Design

Hi,

I will check it internally and get back to you on this.

Thanks. Looking forward to your reply. Along the same line of questions:
1) 2-way Audio: The audio reference kit supports an AUD_IN function, which is broken-out via a jumper; this signal directly drives the CC2560. This is serial audio data (PCM) input signal to the board. We would, then, have to purchase or design a microphone/PCM interface to drive the dev. kit. (Please confirm)
2) Bluetopia Bluetooth Stack: Will the audio sink kit, as delivered, support profiles HSP, HFP and/or A2DP?
processors.wiki.ti.com/.../CC256x_TI's_Bluetooth_Stack ... shows only Class profiles SPP, A2DP and AVRCP; The Bluetopia stack, therefore, does not support HFP?
This link would suggest that we can achieve 2-way audio (source & sink) with A2DP:
developer.bluetooth.org/.../A2DP.aspx
I better understand the "Audio Sink Reference Design" from TI ... referring to the board's ability to "RECEIVE/SINK" Bluetooth audio; however, this would seem to suggest that this board will not allow us to "SEND/SOURCE" Bluetooth audio via a microphone. The schematic does show, though, that the PCM audio data input (AUD_IN) is broken-out on the board from a header to the CC2560.
Can you help us better understand what we can & cannot do with Audio Sink Reference Design Kit with respect to 2-way audio, HFP vs. A2DP, etc.?

Hi,

1) We need to evaluate 2-way audio, not just receiving audio signals from 3.5mm jack and sending over BT. Need the microphone piece of this for the HFP.
[Answer] - This board is just a reference designed to display the A3DP capability, You might have to change it to fit your requirements

2) Does Bluetooth stack in this design support or allow evaluation of HFP, HSP, A2DP?
[Answer] In the current Bluetopia SDk available, there is no HSP demo (we are planing for one in future release ).
In Tiva : we have HFP (hands free role) and A2DP. In MSP430 : We have HFP (hands free role) demo's available and no A2DP as the there is not enough MIPS and RAM to hold the SBC codec. So A2DP is not possible on MSP430, But A3DP demo's are available.

3) Can the MSP430 signals be broken-out for evaluation of this basic design with a newer Blueooth Module such as LSR TiWi-uB2?
[Answer] - Not sure I understood your question. But if you are asking if you can use the the MSP430 for evaluating other CC256x modules, then the answer is yes.

1) 2-way Audio: The audio reference kit supports an AUD_IN function, which is broken-out via a jumper; this signal directly drives the CC2560. This is serial audio data (PCM) input signal to the board. We would, then, have to purchase or design a microphone/PCM interface to drive the dev. kit. (Please confirm)
[Answer] - are you talking about the audio sink board, If so the data coming out of J25 is from the DAC
see http://processors.wiki.ti.com/index.php/CC256x_Audio_Sink_User_Guide

2) 2) Bluetopia Bluetooth Stack: Will the audio sink kit, as delivered, support profiles HSP, HFP and/or A2DP?
processors.wiki.ti.com/.../CC256x_TI's_Bluetooth_Stack ... shows only Class profiles SPP, A2DP and AVRCP; The Bluetopia stack, therefore, does not support HFP?
This link would suggest that we can achieve 2-way audio (source & sink) with A2DP:
developer.bluetooth.org/.../A2DP.aspx
I better understand the "Audio Sink Reference Design" from TI ... referring to the board's ability to "RECEIVE/SINK" Bluetooth audio; however, this would seem to suggest that this board will not allow us to "SEND/SOURCE" Bluetooth audio via a microphone. The schematic does show, though, that the PCM audio data input (AUD_IN) is broken-out on the board from a header to the CC2560.
Can you help us better understand what we can & cannot do with Audio Sink Reference Design Kit with respect to 2-way audio, HFP vs. A2DP, etc.?
[Answer] - NO the audio sink device as is can not work with as HFP, HSP and A2DP, But A3DP is possible, both source and sink see the A3DP MultiRoom Demo.

Hi,

To complement Sundeep's comments, the BT-MSPAUDSINK board has a DAC ONLY. Therefore, it can only PLAY audio. To RECORD audio, an ADC is required such the one in the BT-MSPAUDSOURCE. For HFP, audio has to be PLAYED and RECORDED. Therefore, an ADC and a DAC are required.

Thar being said, HFP cannot be fully demo'ed with the BT-MSPAUDSINK due to the missing ADC. One would have to combine the BT-MSPAUDSINK and BT-MSPAUDSOURCE boards to do HFP. Perhaps blue-wiring the ADC on the BT-MSPAUDSOURCE to the BT-MSPAUDSINK or blue-wiring the DAC on the BT-MSPAUDSINK to the BT-MSPAUDSOURCE should work.

~Miguel