STM32F730R8+USB3300 ULPI does not work
Hi,
I have been trying several days to make STM32F730R8 work with USB3300 through ULPI for USB OTG HS connection. First, I managed to make F407+USB3300 work. But then I tried to use STM32Cube to generate code for F730R8, first, the image can not be burned into Flash. I found the reason was the Cube set the flash size to 1MByte, but 730R8 has only 64KByte. I changed the flash size to 64KByte then flash burning works(Cube bug???)
Then I tried the USB function which did not work at all. After looking for the reason, I found it seems that 730R8 ULPI does not work. I can see the 60MHz clock coming out of USB3300 but the rest of the control signals (STP/DIR/NXT) are just silent (using Logic analyzer, on 407 I saw heavy traffic on those control signals). I looked on the internet but found no information about it. So does anybody know the reason why 730R8 does not respond on ULPI? Thanks.