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AM5748: When connect AM5748 with CS8427 with I2S port, there is connection error

Part Number: AM5748

Tool/software:

As title said, when connect AM5748 with CS8427 with I2S port, there is connection error. But when add a resistor in the Bclk and LRclk then the connection is OK. 

Could please help to check this is OK and why?