INT- PCM5102A no output issue till VDD cycling during pulse power test

Rocson He

Other Parts Discussed in Thread: PCM5102A

Hi Team,

For PCM5102A, at what condition could it be into no output issue, while re-cycling VDD could make it work again ?

If VDD drop down to below 2.8V POR threshold, during normal working, and then recover gain, could PCM5102A work again ?

In D/S, it mention there is clock error detection principle, could you help share when this happens, how could it be normal again ?

I have customer evaluating this part, and meet output latch issue during input pulse power test, while the input I2S input are normal. Mute and then un-mute didn't help, and has to cycle VDD.

Thanks for your help.

PCM5102A sch.pdf

PCM5102A no output issue till VDD reset.docx

over 8 years ago

0 Rocson He over 8 years ago

TI__Intellectual 1830 points

Hi Team,

Might I have your help, what condition could lead PCM5102A to latch without output ?
And need cycling power supply to reset ?

Thanks for your help in advance.

0 Justin Bohr over 8 years ago in reply to Rocson He

TI__Mastermind 27880 points

Hi Rocson,

Going below 3.1 V, which it shows in your attachment happens can cause the part to brown out. This means that the digital logic will be unpredictable. if the supply dips below 3.1, the part must be reset when the power is good again. If you run the same test and monitor the LDO pin, and if you see the voltage sag or drop off then that is evidence of a brown out happening. After a brown out the power will need to be cycled to set the part back to default states.

Justin

0 Rocson He over 8 years ago in reply to Justin Bohr

TI__Intellectual 1830 points

Hi Justin,

Thanks for your reply.

One further question is, when the power drop and then recover as good again, before the reset, is there any timing delay before a new POR reset ?

Or it could be reset right after the power is good ?

Thanks for your help.

0 Rocson He over 8 years ago in reply to Rocson He

TI__Intellectual 1830 points

Hi Justin,

Could you help with the question as above, ASAP ?
Thanks.

Rocson

0 user1291824 over 7 years ago in reply to Rocson He

Prodigy 80 points

I have encounter a issue that no audio output when I2S signal is work normal. Should I check which part? The CPVDD/AVDD/DVDD all is 3.3V , the internal 1.8V LDO also has the output voltage. Whether the VNEG or CAPP/CAPM voltage is abnormal ? what is the normal voltage ?

Wei Song

Audio

Audio forum

INT- PCM5102A no output issue till VDD cycling during pulse power test