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USB Superspeed Peripherals

xubu_4365606
New Contributor
‎Jul 19, 2019 06:16 AM

FX3 can't be detected after PC reboot

Hello:

     I use FX3 with I2C boot (Z1Z) and it works fine on normal conditions. But if I reboot the PC ( motherboard do not cut down USB power during reboot  sequence), in windows OS, the USB device can't be enumerated and shows an unknown device. Only after I plug out and in the device, the system can recognize the FX3 device.

     It is strange that FX3 works well on the same PC in linux OS.

    Is there any idea what's wrong with my design?   Thanks a lot!

BR

Xu bu

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Hemanth
Moderator
Moderator
‎Jul 23, 2019 05:40 AM

Re: FX3 can't be detected after PC reboot

Hi Xu bu,

Please check the state of FX3 just before PC re-booted. Did it go to suspend mode.

Please let us know which firmware you are using to test. Can you load USBBulkSrcSink firmware from FX3 SDK 1.3.4 and check if the device enumerated after reboot.

Regards,

Hemanth

Hemanth
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