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AM5708: USB is not connected to PC

Part Number: AM5708

Dear Team,

We developed a board with USB connection as AM5708.

- Using CCS9.3.

- I checked the USB connection by executing the example 'USB_DevBulk_idkAM571x_armExampleProject' on the idkAM5718 board.

- I downloaded this 'USB_DevBulk_idkAM571x_armExampleProject.out' file to My_Board and checked the USB connection. 

 However, the message 'USB device recognition failed' appears on the PC.

- USB1 port and USB2 port are in the same state.

- Where should I check?

Ask for help.

Regards,

jungsoo Kang