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When the sampling rate of the S/PDIF input signal is 192 KHz and the output signal of the ADAU1452 is distorted

SigmaDSP & SigmaStudio chenxuezong509@126.com May 9, 2023 00:00 1 replies Original on forum ↗
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chenxuezong509@126.com Question
May 9, 2023 00:00

Hi:

When the sampling rate of the S/PDIF input signal is 192 KHz and the output signal of the ADAU1452 is distorted, I found in the specification that the S/PDIF audio sampling rate is 8-96 KHz.

Is there a way to solve this problem?

Thanks & Regards

Gavin

Audio Signal Processors

adau1452

software

SigmaDSP Audio Processors

Harishgowtham Reply
May 10, 2023 00:00

Hello Gavin,

As mentioned in the datasheet, the SPDIF rates can't go above 96KHz in sigma300 (ADAU1451/1452) parts.

For 192KHz SPDIF input, you have to try sigma350 (ADAU1462/1466 or ADAU1463/1467) parts which supports SPDIF sampling rates up to 192KHz.

Please note that the output rate of the SPDIF will follow the start pulse rate. So, it will output at the rate of what the core is set to. This is common.

Regards,

Harish