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TAS2557: Question of TAS2557 SDOUT (GPIO3)

Part Number: TAS2557

Hi Sirs,

According to the TAS2557 datasheet, we can program the TAS2557's GPIO3 to SDOUT at B0x00, P0x01, R0x3F.

However, with PPC3's configuration, we found the PPC3 programs the R0x3F = 0x10 which is not in line with datasheet (0x16), however, the I2S DOUT is still functional on TAS2557 EVM and customer's system.

Would you pls advise is there is typo with the TAS2557 datasheet or we should write the B0x00, P0x01, R0x3F = 0x16 following the TAS2557 datasheet? 














Actually, the SDOUT on GPIO3 works with B0x00, P0x01, R0x3F = 0x10



However, the SDOUT stops sending signal with  B0x00, P0x01, R0x3F = 0x16



Thank you and Best regards,

Wayne Chen
02/21/2019