STM32N6570-DK inconsistency with information in datasheets and parts used

[Linas L]

I was looking at STM32N6, and it says it has 1G networking. Problem is, chip used is 100M. So how can they say that development kit supports 1G ?

LAN8742A-CZ-TR chip used inside both devkits:

Same goes to HR timer, it says on datasheet, it does support high resurrection timer, while no mention anywhere about it

Is there nay more information regarding timer and does devkit support 1G ? I was hoping it could, since I could make IP camera or something similar.

[Andrew Neil]

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@Linas L wrote:

I was looking at STM32N6, and it says it has 1G networking. Problem is, chip used is 100M. So how can they say that development kit supports 1G ?

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Which development kit are you referring to?

Please give a link to where that screenshot came from.

[Linas L]

https://www.st.com/en/evaluation-tools/stm32n6570-dk.html

Maybe in that case they say, chip itself does support it

Both development kit uses same chip for networking

But they are clearly listing what is on the development board, since all features can't be 5inch LCD....

[Linas L]

Sorry my bad, altium project looked similar, and both times I was able to open same one. RTL8211F-CG is actual chip on DK development kit, it does support 1000M.

So only high resolution timer left, no info on that one.

[Andrew Neil]

I've edited the post title to make that clear

[TDK]

> STM32N6570-DK

> it says on datasheet, it does support high resurrection timer

I see no hits for "high-resolution timer" in the datasheet of the board or the chip.

https://www.st.com/resource/en/datasheet/stm32n657x0.pdf

https://www.st.com/resource/en/data_brief/stm32n6570-dk.pdf

Perhaps it got removed. The chip doesn't have an HRTIM.

[RomainR. · Accepted solution]

Hi @Linas L 

There is no HRTimer in the STM32N6, it was a typo in the DS14791 rev2, which has been corrected in the current version rev3.

Best regards,

Romain

[Linas L]

Indeed, google search gave me older version to view. 
Thank you !

[RomainR.]

Hi @Linas L 

Okay, the search engine results are unfortunately beyond our scope.

For all research on the latest revisions of the Reference Manual, Data Sheet, and especially the Errata Sheet, I recommend always using www.st.com or STM32CubeMX.

Best regards,

Romain