Information regarding the USBH from reference manual

[Srikanth1]

Hi

     I am working on a custom board based on STM32MP157A . For USBH_EHCI while checking the register (USBH_EHCI_INSNREG05) mentioned in the reference manual (RM0436) it was mentioned to refer to UTMI specification. could you please suggest / share me the vendor specific UTMI specific document for the below attached image  

 

Thanks&Regards

Srikanth

[PatrickF]

Hi @Srikanth1 ,

I have asked internally details for those 'vendor specific' fields. My first assumption is that bits 0 to 12 are not used in our implementation and might need to be removed from the documentation.

regards.

 

[PatrickF]

Hi,

I got confirmation from expert than the bits 12-0 are not connected in our design and so will do nothing (i.e. vendor specific feature not used).

Future revision of Reference Manual will be updated to reflect this.

Regards.