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TFuji.5
Associate
August 6, 2021
Question

STM32F4 SAI data latch

  • August 6, 2021
  • 2 replies
  • 931 views

Hello

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​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.​

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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?

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This topic has been closed for replies.

2 replies

waclawek.jan
Super User
August 6, 2021

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

JW

TFuji.5
TFuji.5Author
Associate
August 6, 2021

Dear waclawek.jan san

​

Thank you for your reply.

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

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