3 Replies Latest reply on Oct 25, 2015 1:45 PM by paul.claessen

fx3 enumerate as UNKOWN DEVICE, driver don't install

paulsons Aug 18, 2017 3:22 PM

I've designed my own FPGA board using Cypress CYUSB3014 as the USB controller, and of course, I had been following the hardware design guidelines. But the problem is, when I config the PMODE[2:0] pins as F11(USB boot mode) and connect the board to PC, it enumerated as UNKNOWN DEVICE. And after I checked the windows device manager to try to install the driver, it responded as "windows could not find driver software for your device".

I've installed the EZ-USB FX3 SDK, the driver is supposed to be in the direction "C:\Program Files (x86)\Cypress\EZ-USB FX3 SDK\1.3\driver\bin\", but I've tried to install it on both win7 and win8, the responses : "windows could not find driver ...". And of course, when I open the USB Control Center, nothing shows out.

I tested the board, the chip is powered up, and the clock source(19.2MHz oscillator ASEMB-19.2MHZ) is working fine. I connected the oscillator output to the CLKIN pin, config FSLC[2:0] pins as 100. The chip should be working fine.

I've tried every solution I can find online, but nothing better happened. I'm really exhausted now. Did anyone else come across this kind of problem? What's your solution?

1. Re: fx3 enumerate as UNKOWN DEVICE, driver don't install

user_512410720 Sep 2, 2015 12:02 AM (in response to paulsons)

Did you find a solution to this problem?

I have exactly the same issue. My prototypes fail enumeration. All power supplies and communications connections are good. Like you, I am using an external oscillator (ASEMB-19.2MHZ) connected to the CLKIN input. I have also configured the FSCLK[2:0] pins to be 100.

Perhaps there is a problem using an external oscillator instead of a crystal. Can anyone provide any input here please?
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2. Re: fx3 enumerate as UNKOWN DEVICE, driver don't install

naz Sep 3, 2015 1:25 PM (in response to paulsons)

My fast enumeration usb setup callback does not handle host requests or usb events properly (yet). So, every time I do something wrong on the host side, my device starts being unknown to the PC. The only way, I found, to get it recognized again was to restart the PC.
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3. Re: fx3 enumerate as UNKOWN DEVICE, driver don't install

paul.claessen Oct 25, 2015 1:45 PM (in response to paulsons)

If any of the above posters found a solution, could they share it with us?

If no solution has been found: did you make sure your PMODE[2-0] pins were configured correctly for the proper boot operation?
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