STM32F4 SAI data latch

[TFuji.5]

Hello

​Our new product use a STM32F427 and a ADC(AD7768-4) the data input connection is the SAI(serial audio interface). The STM32F4 SAI mode is the slave mode.​

The ADC sends SAI_SD signal and SAI_FS at rising edge.

Therefore, we think that the STM32F4 clock strobing is the falling edge.

​Is our understanding of this correct?

Does the STM32F4 clock strobing edge mean the SAI_SD signal and SAI_FS latching point?

[waclawek.jan]

Which edge of SAI_SCK is used to strobe (yes, latch) data, can be selected in SAI_xCR1.CKSTR.

JW

[TFuji.5]

Dear waclawek.jan san

Thank you for your reply.

We understood the strobe and SAI_SCK is used to strobe data only.