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USB Low-Full-High Speed Peripherals

MaXi_1246331
Contributor

If the FX2 device on FX2 board is powerd by external power, instead of the bus power. Assume FX2 board is power off and connected with the host PC. What is the state of D+ and D- at this time, will it be at high level and harm the FX2 device?

The same question also apply to the FX3 device. I hope to understand.

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SrinathS_16
Moderator
Moderator

Hello Maverick,

Removing the external power to the FX2LP/FX3 device and leaving it connected to the host PC will not harm the device.

Best regards,

Srinath S

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SrinathS_16
Moderator
Moderator

Hello Maverick,

Removing the external power to the FX2LP/FX3 device and leaving it connected to the host PC will not harm the device.

Best regards,

Srinath S

View solution in original post

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