You are viewing a plain text version of this content. The canonical link for it is here.

Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2021/04/12 12:59:50 UTC

[GitHub] [incubator-nuttx] davids5 commented on pull request #3522: stm32h7: Allow OTGHS to use internal FS PHY

davids5 commented on pull request #3522:
URL: https://github.com/apache/incubator-nuttx/pull/3522#issuecomment-817790220


   > @antmerlino will it work for OTS_HS1 and OTS_HS2?
   
   The Data Sheet says:
   
   2× USB OTG interfaces (1FS, 1HS/FS)
   
   The devices embed two USB OTG high-speed (up to 480 Mbit/s) device/host/OTG peripheral. OTG-HS1 supports both full-speed and high-speed operations, while OTG-HS2 supports only full-speed operations. They both integrate the transceivers for full-speed operation (12 Mbit/s). **OTG-HS1 features a UTMI low-pin interface (ULPI) for high-speed operation (480 Mbit/s). When using the USB OTG-HS1 in HS mode, an external PHY device connected to the ULPI is required.**
   
   > "No External ULPI, fallback to Full-Speed using internal OTGFS PHY"
   
   "No External ULPI hardware on board. OTG_HS1 is limited to Full-Speed using internal OTGFS PHY"
   
   


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

For queries about this service, please contact Infrastructure at:
users@infra.apache.org