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Studio Bluetooth

MaMi_1707981
Level 5
First comment on KBA 100 replies posted 100 sign-ins
Level 5

According to the DATA sheet of CYW-20706,  Left-channel data is transmitted when I2S WS is low, and right-channel data is transmitted when I2S WS is high. Is it correct ?

Our customer says the opposite result is observed.

[Envorinment]

    CYBT-343026-01

    WICED Studio 6.2

    Profile/role: A2DP/source

    Peer devices: at least two products. One is LBT-PAR500 made by ELECOM.

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1 Solution
MaMi_1707981
Level 5
First comment on KBA 100 replies posted 100 sign-ins
Level 5

Hi Xinghao,

Thank you for supporting.

I contacted a local FAE.

This issue will be fixed.

Thanks,

Mizuno

View solution in original post

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6 Replies
Owen_Zhang123
Moderator
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Moderator

The description in the datasheet is correct.

Could you let us know how does the customer observe the error?

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MaMi_3520196
Level 6
25 comments on KBA 10 comments on KBA 5 comments on KBA
Level 6

HOST sends L-channel only data, i.e. all '0' for R-channel.

Then,  we check it on peer device(A2DP sink headset).

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Owen_Zhang123
Moderator
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Moderator

Does the host act as I2S master? Did the customer check if the host sends data in right format?

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MaMi_1707981
Level 5
First comment on KBA 100 replies posted 100 sign-ins
Level 5

The host acts as I2S master. CYW20706 acts as I2S slave.

It looks I2S format is correct.

According to the custommer's report,  the audio stream is sent correctlly except L/R channel is wrong.

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MaMi_1707981
Level 5
First comment on KBA 100 replies posted 100 sign-ins
Level 5

Please find the attached log.

It is a signal wave when only L channel is sent.

Could you double check it ?

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MaMi_1707981
Level 5
First comment on KBA 100 replies posted 100 sign-ins
Level 5

Hi Xinghao,

Thank you for supporting.

I contacted a local FAE.

This issue will be fixed.

Thanks,

Mizuno

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