Posted on October 04, 2016 at 03:13Well the ST engineers would presumably understand where the critical paths are, and what their process capabilities are. It wouldn't surprise me that the VCO can clock north of 500 MHz.
I don't think you are going to get access to that level of engineering support here, you'd have to cultivate a relationship through your sales and FAE contacts.
I've seen people report 250 MHz operation, 240 MHz at least would provide a clear route to clocking USB at 48 MHz. Parts within the same process offer APB2 clocks up to 100 MHz, APB1 to 50 MHz
