STM32H753 Can the master clock output ( MCLK output) work if the I2S mode is set as slave?

[Sam Ho]

Hi

Does anyone know if on STM32H753, Can the master clock output ( MCLK output) work if the I2S mode is set as slave? 

Thanks

Sam

[Sam Ho]

MCK Generation

The master clock MCK can be generated regardless to the SPE bit. The MCK generating is controlled by the following bits:

– I2SMOD must equal to 1,

– I2SCFG must select a master mode,

– MCKOE must be set to 1

Is there anyway to get around this? or if its a hardware level implementation that limits this?

Many thanks!

[waclawek.jan]

This is given by hardware.

Can't you generate the clock on that point in another way, e.g. isn't that pin also output of a timer?

JW

[Piranha]

As always... Instead of SPI/I2S peripheral try using SAI peripheral.