PCM1821EVM: SDATA output issue

Shoo Saga

Intellectual 1731 points

Part Number: PCM1821EVM
Other Parts Discussed in Thread: PCM1820

HI team,

My customer is evaluating PCM1820/21 EVM board. Their SDATA output is only 1V.

The settings are below.

FMT：L(I2S mode)

MSZ：L

MD1：L

MD0：L

MCLK＝12MHz

BCLK＝3MHz

FSYNC＝48kHz

Do you have an idea what is going on?

Thanks,

Shoo

over 1 year ago

0 Jeff McPherson over 1 year ago

TI__Mastermind 29250 points

Hi Shoo,

Today is a TI US holiday. Our team will get back to you on Tuesday.

Thank you for your patience,
Jeff McPherson

0 Shoo Saga over 1 year ago in reply to Jeff McPherson

TI__Intellectual 1731 points

Hi Jeff,

Could you support above the case?

Thanks,

Shoo

0 Ore Ogundana over 1 year ago in reply to Shoo Saga

TI__Expert 5665 points

Hello Shoo,

Can the customer measure the voltage they are feeding their IOVDD pin? That pin should be supplied a DC voltage of 1.8V or 3.3V. If that is not the case please advise your customer to provide the recommended voltage to that pin. The IOVDD supply is mentioned in section 7.3 of the datasheet.

If this issue still occurs, feel free to request more support.

Regards,

Ore.

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PCM1821EVM: SDATA output issue