Setting STM32H7 SAI port as asynchronous slave device

[BHan.1]

Hello,

I'm trying to connect my DAC as a master device to STM32H7.

I have configured SAI1 A as a Asynchronous Slave and SAI1 B as a synchronous slave.

But I'm confused where to connect my DAC's MCLK output into.

In other readings, LINK STM32L4 series have a SAInEXTCLK pin, but I was not able to find this pin on STM32H7.

Is the naming different for STM32H7?

[waclawek.jan]

You have "asynchronous" in the subject, and that means it does not necessarily have a common primary clock, i.e. you probably can simply leave it unconnected and run out of the internal clock, if it is fast enough.

JW

[BHan.1]

Hello JW,

From my past experience using external audio specific controllers, the jitters and timing showed difference when inputting DAC MCLK into the audio controller. I actually found out that there is a CLK input pin I2S_CKIN that I could use for this purpose!