STM32H745 + FUSB2805 (ULPI PHY) – USB HS Only Works at 12Mbps, Fails at 480Mbps
Hi all,I’m working with an STM32H745 controller and an external ULPI PHY (FUSB2805, pin-compatible with STULPI01A). All hardware connections are verified and correct – the PCB layout and power rails are within spec, and the ULPI lines are as per the ...