I want to use STM32F413 for my PCB design. I need USB data lines for communicating with a computer. Ideally, I would not have any oscillator on the PCB to save space. I noticed that's it's not possible to use HSI for the USB clock on CubeMX. Can I use pin PA8 as MCO to output HSI and route it to PH0 ? This way HSI and HSE are connected though the PCB. On CubeMX it seems possible, however, I don't know if it can work in reality. Are there some consideration hat I need to take to ensure this will work? Here are some screenshots of the CubeMX configuration and PCB schematic. Thanks
Hi, how can you setup Start of Frame signal? the STM32 will only operate in device mode so if it's possible to use SOF instead of a crystal it would be an ideal solution. From my understanding, the host sends a signal every 1 ms (LS) or 125 us (HS). How does that the SOF signal transmits to the STM32 device? The STM32 will be connected to the computer with Micro USB connector (VBUS, D+, D-, GND). Do I need to activate a function in CubeMX to sync the data with SOF? Thanks
Huge thanks. I decided to put and oscillator to ensure stability as this product will be sold to customers. If use a clock oscillator I only need to connect PH0 to the OSC pin on the chip? (I leave PH1 floating?)
Oscillator I choose: https://www.digikey.ca/en/products/detail/abracon-llc/ASFLMB-8.000MHZ-LY-T/2624517
