Hi all,
I'm using an STM32F746ZE in my application that uses USB OTG HS with internal FS Phy in Host only configuration.
Originally, I have setup the clock in the following manner:
in order to have 48MHz clock for USB. With this configuration, any device connected is not recognized and the USB host device does not work at all.
I try to change the clock configuration in this manner:
and all work properly, also if I change USB role to CDC device (virtual COM).
What is the reason for this apparently strange behavior? In both setup configurations, the final clock sources for USB device are 48MHz.
