TAS5766M: TAS5766M output FSW fail

Ben Kuo

Part Number: TAS5766M

Dear expert,

We face to an output FSW issue on our board.

Our setting as below,

LRCK=48KHz, BCLK=1.536MHz, Ra=10K ohm, Rb=open

Based on table 22 in datasheet, the output FSW should be 384KHz. But we measured 449KHz at output.

Could you give me your feedback about this issue?

-Ben

0 Shawn Zheng over 6 years ago

Hi Ben,
We are looking into this and will get back to you later.
Best regards,
Shawn Zheng

0 Alix Wan over 6 years ago

Hi Kuo,

I tried in my EVM board but I cannot reproduce your issue. Hence,

Can you share the schematic with me for the double check?
Can you use I2C tools (PPC3 I2C master or other) to read Page 0 / Register 91 (Hex 0x5B) to check whether clock detection is right or not? (See page 68 of datasheet)? And tell me the results.
Please keep all register setting in default and just enable the TAS5766 with I2S data and check again.

Regards,

Alix Wan.

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