I'm not sure why the SDK example is not working well for you.
Maybe you can try out the AN example here: http://www.cypress.com/?rID=51581
If neither works as expected, please create a support case and we will debug this further.
Thankyou for your help!
I use the FX3 firmware which at the AN65974 example,don't change anything,build the "SlaveFifoSync" project,download the SlaveFifoSync.img into the ram of cyusb3014.The USB control center do not identify the usb device,(identify as "Cypress USB StreamerExample" for a moment,the device lose,and so on)
If i use SF_streamIN.img file in the debug document to download into the ram of cyusb3014,the USB control center can identify the "Cypress USB StreamerExample" device,and work perfectly.
Can anyone tell me ,what happen? Help to solve the problem.
the system of my pc is win7.
SlaveFifoSync.rar 1.5 MB
Do you test the example in USB 3.0 SuperSpeed mode? Does it work if you connect FX3 to host USB 2.0 port, i.e. use it in USB 2.0 mode?
If it runs well in USB 2.0 mode but does not run in SuperSpeed mode (you notice USB errors, device disappearing, device re-enumeration, etc.), then this may be caused by USB 3.0 signals integrity issue (USB 3.0 signals are bad).