TLV320AIC3110: TLV320AIC3110

Ian Wang

Mastermind 29770 points

Part Number: TLV320AIC3110
Dear Sir, if we can power up SPLVDD/SPRVDD after AVDD/HPVDD? Thanks, Ian.

over 7 years ago

0 Steve-Wilson over 7 years ago

TI__Mastermind 30210 points

Hello Ian,

Please see Section 7.3.1 in the datasheet. The recommended power up sequence is there.

best regards,

-Steve Wilson

0 Ian Wang over 7 years ago in reply to Steve-Wilson

TI__Mastermind 29770 points

Dear Steve,

Yes, I know 7.3.1, but we possible need SPLVDD/SPRVDD after AVDD/HPVDD, that why I asked if any risk if we do that.

Thanks, Ian.

0 Steve-Wilson over 7 years ago in reply to Ian Wang

TI__Mastermind 30210 points

Ian,

Can you tell me what kind of time difference we are talking? I have sent a request to our India team, but it is Diwali (the festival of lights) and so it is unlikely that we will hear back before monday.

best regards,

-Steve Wilson

0 Ian Wang over 7 years ago in reply to Steve-Wilson

TI__Mastermind 29770 points

Dear Steve,
D/s shows first power up SPLVDD/SPRVDD and final is AVDD/HPVDD. But we will final power up SPLVDD/SPRVDD after AVDD/HPVDD.
Thanks, Ian.

0 Steve-Wilson over 7 years ago in reply to Ian Wang

TI__Mastermind 30210 points

Hi Ian,

Yes, I understand the order, but are we talking a Time delta of 2ms? 20ms? 200ms?
Best regards,
-Steve

0 Ian Wang over 7 years ago in reply to Steve-Wilson

TI__Mastermind 29770 points

Dear steve,

We want to be off power of SPLVDD/SPRVDD when system go to deep sleep mode.

And then when system wake up to idle mode, SPLVDD/SPRVDD will be powered up by system.

So time delta is larger than 200ms depend on user's control.

Thanks, Ian.

0 Ian Wang over 7 years ago in reply to Ian Wang

TI__Mastermind 29770 points

Dear steve,

May I have your comments?

Thanks, Ian.

0 Steve-Wilson over 7 years ago in reply to Ian Wang

TI__Mastermind 30210 points

Ian,

I have not heard back from India. Have you considered using Page 1 / Register 32 bits 6 and 7 ? These power down the Class-D speaker blocks. It wouldn't be necessary to shut power off in those conditions.

-Steve Wilson

0 Steve-Wilson over 7 years ago in reply to Ian Wang

TI__Mastermind 30210 points

Ian,

I just heard from the India team

"From design side we recommend SPVDD supplies in AIC3110 need to be powered-up before any other supplies of the device else some diode in device may get forward bias and cause some issues."

check out my last post, regarding powering down the class D blocks using register writes. This could help you achieve the same goal.
-Steve Wilson

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TLV320AIC3110: TLV320AIC3110