Does STM32F446 not have full-duplex I2S?

[Bumsik Kim]

Posted on December 02, 2016 at 04:43

Hello, I am designing a project using STM32F446, hoping to get more performance than STM32F401/411.

After some research and trial and error, it looks like this MCU does not support full duplex I2S. I could not find I2S_SDext in the datasheet.

Is that correct this one does not support full-duplex I2S communication? Then how can I set I2C_SD pin as input or output?

[waclawek.jan]

Posted on December 02, 2016 at 10:23

You are supposed to use SAI for I2S in the newer 'F4/'F7.

JW

[slimen]

Posted on December 02, 2016 at 10:33

Hello,

You should refer to your reference manual for more clarification.

Regards

[Radek RIPA]

Posted on December 05, 2016 at 19:00

Hello 

The I2S on STM32F446 which is shared with SPI is only half duplex(written in reference manual). 

The full duplex I2S is managed over newer SAI periphery.

Best regards

Radek

[Bumsik Kim]

Posted on December 19, 2016 at 01:09

Oh I didn't know the new SAI interface.

Thanks for you help.