Stm32F446 RM error?

[Smuffin]

I noticed, that in the RM for the stm32f446 (v6, 2021) the description for the number of slots in the SAI peripheral (NBSLOT) seems wrong?

I am not quite sure, but the behavior on my device suggests that the bitfield represents the number of slots -1.

Therefore, I write a 0b1 for 2 slots. The way it is formulated states that it would require a 0b11 for 2 slots. Is this an error or am i wrong?

[AScha.3]

If you set nbslot to 1 , text says: nbslot +1  -> slots in audio frame -> 2 slots .

This is also what you got - right ? (nbslot = (slots in audio frame) -1 .) same.

[STTwo-32]

Hello @Smuffin 

I'm checking this internaly. I will be back to you on monday with more details.

Best Regards.

STTwo-32 

[Smuffin]

I think it states the value in the field = number of slots + 1. This would mean
nbslot = 1 = actualslots +1 -> actualslots = 0

Cheers
Smuffin

[STTwo-32 · Accepted solution]

Hello @Smuffin 

I seems to be a typo on the RM0390. I've escalated for investigation and correction on the coming releases (under internal ticket number 194461). Thank you so much for reporting.

Best Regards.

STTwo-32