Hi team,
I got a question from customer.
"
I generated a very simple project by CubeMX, wanting to test the speed of the new usb2.0 phy. I've changed nothing. However, the VDD18 power supply would turned to about 2.8V after the GPIOC was initialized: HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);. No clock signals can be detected by oscilloscope on the ULPI_CK pin. And the program would go timeout and stuck in Error_Handler().
The circuit board is designed by our company, according to the typical application in the TUSB1210-Q1 Datasheet.
I've found a potential problem, TUSB1210Q1 seems only support 1.8V IO, but my stm32 mcu's IO voltage is 3.3V. Will this be the reason of my question?
"
Thank you very much for your help.
Best regards,
