TLV320AIC3101: After releasing reset

Kuramochi Tadahiko

Guru 28715 points

Part Number: TLV320AIC3101

Hi,

Can DOUT become active after releasing reset?

My customer is considering using multiple AIC3101s and I2S line is common.

So, they concern about the conflict of DOUT by simultaneous releasing reset.

Best Regards,

Kuramochi

over 3 years ago

0 Alexander Smith over 3 years ago

TI__Mastermind 47625 points

Hi Tadahiko-san,

Thank you for your question. Many of our engineers are taking vacation due to the Christmas holiday in the US. Once they return from the holiday, they will address your question. I apologize for any inconvenience this causes.

0 Kuramochi Tadahiko over 3 years ago in reply to Alexander Smith

Guru 28715 points

Hi,

How is this situation?

Best Regards,

Kuramochi

0 Aaron Estrada over 3 years ago in reply to Kuramochi Tadahiko

TI__Mastermind 22950 points

Hello Tadahiko-san,

DOUT will not necessarily be active after reset as when the device is reset, all the blocks will be set to their default state. The ADCs are powered down in their default state.

When ready to transmit data, DOUT can be placed in a HI-Z mode.

Regards,
Aaron Estrada

0 Kuramochi Tadahiko over 3 years ago in reply to Aaron Estrada

Guru 28715 points

Aaron-san,

Thank you for your help.

Is DOUT Hi-Z at default?

Best Regards,

Kuramochi

0 Aaron Estrada over 3 years ago in reply to Kuramochi Tadahiko

TI__Mastermind 22950 points

Hello Tadahiko-san,

DOUT is Hi-Z during reset but after reset, it is not. Programming Page 0, Register 8, Bit-D5 will place DOUT in Hi-Z when valid data is not being sent to the device.

Regards,
Aaron

0 Kuramochi Tadahiko over 3 years ago in reply to Aaron Estrada

Guru 28715 points

Hi Aaron-san,

Thank you for your help.

I have an additional question.

Using multiple AIC3101s, the conflict of common DOUT does not occur by simultaneous releasing reset.

Is it correct?

Best Regards,

Kuramochi

0 Aaron Estrada over 3 years ago in reply to Kuramochi Tadahiko

TI__Mastermind 22950 points

Hello Tadahiko-san,

That is correct. No conflict should occur. Since multiple CODECs are planned on being used, I would like to note that the AIC3101 responds to a fixed I2C address. Is there some kind of I2C switch implemented to be able to communicate between the two devices?

Regards,

Aaron Estrada

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TLV320AIC3101: After releasing reset