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When enable USBHS internal IP DMA, STM32F746 discovery board fail to enumerate. 

Question asked by HU.HUI on Feb 8, 2017
Latest reply on Apr 28, 2017 by Vito Marolda

I use STM32CubeMX to generate STM32F46 discovery board project, just enable "USBHS internal IP DMA",  Choose CDC class, show as the attached picture 01, when I compile and run the firmware, connect the USB HS port, I use the USBView.exe from win10 to check the USB information, it shows "FailedEnumeration", show as the pitcture02. If I disable "USBHS internal IP DMA", then everything will be fine. Can anybody tell me how use the USBHS internal IP DMA?Is any other setting I should do? Thanks!