2020-06-21 8:21 PM
I have a USB3343 connected to the STM32F407IGH, but it is not operating at USB High Speed.
It works with USB Full Speed.
Please advise us about the cause.
2020-06-22 12:03 AM
I had similar problem. Try another USB-cable.
2020-06-22 3:48 AM
Hi oleksandr.karbivsky,
I suspect that the LPM (Link Power Management) function of USB3343 is affecting it.
I suspect that STM32F407 cannot control the LPM (Link Power Management) function.
2020-08-23 3:02 PM
Hi,
this behavior is bug in USB334x line. Module 2 of USB334X errata http://ww1.microchip.com/downloads/en/DeviceDoc/80000645A.pdf
Unfortunately, there is no workaround. I did same mistake and now I'll have to redesign PCB, because there isn't any pin compatible PHY :\
Edit:
Workaround/solution for this issue is enabling bit USB_OTG_DCFG_XCVRDLY in F2/F4 MCUs menioned here (you have to load more answers).
2022-02-13 4:47 AM
Where did you add this delay?
2022-02-13 5:20 AM
Hi, I am setting mentioned bit in phy init code.
