STM32H750 AHB2-> APB2 Connection

[Nikola Peric]

I am looking at the datasheet and reference manual for the STM32H750. I am trying to learn about the connections between buses and I saw on the reference manual that AHB2 in the D2 domain has no master bus port, however the datasheet shows an AHB/APB bridge between buses labeled AHB2 and APB2. later in section 2.1.3 of the reference manual, there is no mention of an AHB2 to APB2 connection. What does this mean for accessing peripherals on the AHP2 peripheral bus, is it intended for AHB1 as per the reference manual, or through AHB2 as per the datasheet, or is there another way I am not seeing?

Reference manual Diagram showing no AHB2 → APB2 connection

Datasheet Block Diagram showing APB2 connection to AHB2 through AHB/APB bus bridge (blue box)

 

[Nikola Peric]

Found that its a known issue from 4 years ago. 

 

[mƎALLEm]

Hello ​@Nikola Peric and welcome to the ST community and thank you for your contribution.

Need to double check internally.

I’ll get back to you as soon as I have a feedback.

[mƎALLEm]

Hello ​@Nikola Peric ,

The reference manual is correct as stated in the thread you’ve pointed to:

and the DS13311 has been already fixed:

STM32H723 and STM32H750 have almost the same architecture.

This needs to be applied to STM32H74x and STM32H75x single and dual core datasheets.

Internal tickets for follow-up: CDM0066707 (not accessible by the community users)