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Minimum BCLK frequency for SAI peripheral on i.MXRT1050

Question asked by Daniel Basilio on Jul 26, 2019
Latest reply on Jul 29, 2019 by Jorge Antonio Alcala Vazquez

Hello

 

Our question relates to the i.MXRT105x SAI peripheral. The data sheet specifies a minimum SAI_BCLK cycle time of 40ns in SLAVE mode. We are using the SAI peripheral in SLAVE mode and we are inputting BCLK with a SAI_BCLK cycle time of 20ns, which is lower than the datasheet minimum, but it seems to work just fine as we are reading data correctly.

 

Is it acceptable to apply an external BCLK with a period of 20ns in SLAVE mode ?

 

Thank you

 

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