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Discussion - Hardware / Re: UM245R self powered - what is the impact of the EPROM 'self powered' setting
« on: January 19, 2021, 11:34:54 AM »
Hello,
This setting does in fact alter the USB descriptors presented to the USB host on enumeration, altering the host that the device is either Bus or Self powered. The USB spec requires that a device correctly identify itself to the USB host, so please ensure you have selected the correct setting for your configuration.
Forgetting to update the setting to reflect if you are using a bus powered or self powered design may result in enumeration issues for the device.
Best Regards,
FTDI Community
This setting does in fact alter the USB descriptors presented to the USB host on enumeration, altering the host that the device is either Bus or Self powered. The USB spec requires that a device correctly identify itself to the USB host, so please ensure you have selected the correct setting for your configuration.
Forgetting to update the setting to reflect if you are using a bus powered or self powered design may result in enumeration issues for the device.
Best Regards,
FTDI Community