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AIC3106 connect 4-conductor cellular headset

hakeen
Intellectual 740 points
Other Parts Discussed in Thread: TS3A226AE

I'm designing my board with AIC3106.

AIC3106 will connect to 4-conductor cellular headset (the smart phone headset ,  with MIC and Speaker)

AIC3106 datasheet SLAS509E  don't describe the voltage/currency criteria of Line Out /Line In / MIC In.

SLAS509E  show the typical connection of Speaker and MIC.

But MIC/Speaker  schematics of OMAP-L137  EVM   is different to SLAS509E.

AIC3106 EVM SLAU209A has different MIC/Speaker connection schematics.

What's the standard SPK/MIC connection design?  

Is there any reference design to connect 4-conductor cellular headset?

SLAS509E

SLAS509E Typical connection

OMAP-L137  EVM  Schematics 

AIC3106 EVM SLAU209A

  • 0
    TI__Guru**** 189401 points

    Hi,

    Unfortunately, there are two standards for 4-terminal head phones. So, I suspect that the difference is the EVM is designed for one standard, and the OMAP board is designed for another standard.

    Depending on their application, some customers use a device like TS3A226AE to solve this problem.

    -d2 

  • 0 in reply to Don Dapkus
    Intellectual 740 points

    Thx!

    Auto-detection is good solution for different headset.

    Headset pin define won't bother me.

    I can't find the electric criteria/define  of  Line In/LineOut /Mic In  audio codec (AIC3106).

    Datasheet describe the Line In/Line Out/Mic In  pin as below.

    Each EVM's audio codec connect Line In / Line Out / MIC In  in different way.

    Some, design it with compensation design......  Some not......

    Want to know more   Line In / Line Out / MIC In  Pin define/specification.........