TMDSEVM572X: interafcing earphones with mic on am5728 GP EVM

rav venkat

Part Number: TMDSEVM572X
Other Parts Discussed in Thread: AM5728

Hai,

i am using am5728 GP EVM. Is it possible to use earphones with mic that are used with smartphones. if it is possible i willing to know the steps to do it.

i have already enabled the dts file for audio codec and created nodes for Mcasp and created images to boot but i want to use the mic in earphones for audio input to the board through LINE IN audio jack(audio in jack on the board).

Best Regards,

Venkatesh R.

over 6 years ago

0 Biser Gatchev-XID over 6 years ago

TI__Guru**** 393215 points

Hi,

No, this is not possible. The audio jacks on the GP EVM are LINE_IN and LINE_OUT. There is no audio amplifier on the audio output and no microphone bias on the audio input.

0 rav venkat over 6 years ago in reply to Biser Gatchev-XID

Intellectual 820 points

thank you but can you suggest any alternative audio devices for the above case.

0 Biser Gatchev-XID over 6 years ago in reply to rav venkat

TI__Guru**** 393215 points

You can use a PC with audio card. They usually have LINE_IN and LINE_OUT jacks.

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TMDSEVM572X: interafcing earphones with mic on am5728 GP EVM