STM32F479IIT6

arunkumar devershetty · ‎2018-07-04

Posted on July 04, 2018 at 12:19

we are using STM32F479IIT6 in our design as below,

1.USB 2.0 full speed

2.Self powered

3.As device

Could you clarify on the following points,

1.what is default configuration of OTG_FS_ID(left unconnected,GND or pullup)

2.since it is self powered,there is no need of 5V supply(VBUS is used for sensing of host connection)

Thanks,

Arun D.

#stm32f479iit6-usb-id

Khouloud GARSI · ‎2018-07-05

Posted on July 05, 2018 at 16:05

Hi

arunkumar.devershett

,

By default, the ID pin is left
unconnected.
I advise you to refer to the application note
https://www.st.com/content/ccc/resource/technical/document/application_note/group0/0b/10/63/76/87/7a/47/4b/DM00296349/files/DM00296349.pdf/jcr:content/translations/en.DM00296349.pdf
which covers the most important points that should be taken into consideration when using the USB peripheral embedded inside the STM32 MCUs. Section &39Hardware guidelines for USB implementation -> USB FS upstream port&39 explains the hardware requirements for a correct operation of the USB peripheral in device mode
If you have any feedback about the application note, please do not hesitate to share it here:
https://community.st.com/0D50X00009XkVtDSAV
.

Khouloud.

arunkumar devershetty · ‎2018-07-05

Posted on July 05, 2018 at 16:20

Hi Khouloud,

I have referred the attached application note however it is not mentioned about OTG_FS_ID, also given snapshot below.

As ID pin is required in OTG applications only, can with go with unconnected.

Kindly help us in getting configuration of OTG_FS_ID in USB 2.0 full speed as a device/peripheral.

Thanks,

Arun D.

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