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krn · 2024-11-08

Hello, In my application USB Device, on successful enumeration, BIT13 "USB_OTG_GINTSTS_ENUMDNE"of OTG core interrupt register (OTG_GINTSTS) turns High.As per USB2.0, if my USB Device in its Device Descriptor demands for higher power than what externa...

krn · 2024-04-29

Hello,Hello,I am using STLINK V2 & using SWD for flashing. Please can you confirm if Tag-Connect ARM20-CTX & TC2030-IDC are compatible to STLINK V2.

krn · 2024-03-21

I am using STM32L4R, the VBAT pin is powered by 3.6V +/- 2% & VDD is powered by 3.3V +/- 2%.I think it is okay to have VBATT as 3.67V_max since it is still less than Absolute Max limit of 4V.I think it is okay to have VBAT pin & VDD pin at different ...

krn · 2024-11-15

Hello,Please can you explain how does USB stack can interpret the enumeration if it is successful or failing.

krn · 2024-11-08

Thank you for your reply.My understanding is that since enumeration fails in above case, the BIT13 "USB_OTG_GINTSTS_ENUMDNE" of OTG core interrupt register (OTG_GINTSTS) will not be set High. Can you please comment on this ?

krn · 2024-03-22

Hello, Thank you for the reply.The Absolute Max rating for VBAT pin is 4V.I think it is okay to have VBATT as 3.67V_max since it is still less than Absolute Max limit of 4V.Please can you confirm this understanding is correct.RegardsKaran

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USB Enumeration - Device demands higher power than Host can supply

Tag-Connect ARM20-CTX & TC2030-IDC

Is it okay to have VBAT=3.67 V & VDD=3.3V for STM32L4R?

Re: USB Enumeration - Device demands higher power than Host can supply

Re: USB Enumeration - Device demands higher power than Host can supply

Re: Is it okay to have VBAT=3.67 V & VDD=3.3V for STM32L4R?