Author Topic: More info about USB ports in Eddy-CPU 2.5  (Read 10051 times)

krasimir.k

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More info about USB ports in Eddy-CPU 2.5
« on: June 30, 2011, 06:54:50 PM »
Hi,
Can somebody have answers for following questions (I can not find answer in documentation) :
Which USB port (host or device) can be used to connect with a flash drive?
Which USB port can be used for USB recovery?
I'm asking this because according DK schematics USB device port does not have Vdd on pin 1 and I'm wondering what is purpose of USB device port if there is not Vdd.
« Last Edit: June 30, 2011, 09:58:52 PM by krasimir.k »

Thorsten Trenz

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Re: More info about USB ports in Eddy-CPU 2.5
« Reply #1 on: July 01, 2011, 02:32:44 PM »
Hi Krasimir,
Which USB port (host or device) can be used to connect with a flash drive?

Flash drives can only be connected to host ports.

Which USB port can be used for USB recovery?

USB recovery can only work with device port. Eddy is a device to be connected to the PC host port then.

I'm asking this because according DK schematics USB device port does not have Vdd on pin 1 and I'm wondering what is purpose of USB device port if there is not Vdd.

Vdd on devices is only suitable, if the device is bus powered. Eddy DK is self powered, so this pin is not connected.

best regards
Thorsten Trenz


krasimir.k

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Re: More info about USB ports in Eddy-CPU 2.5
« Reply #2 on: July 01, 2011, 02:39:30 PM »
Thank you for the fast and comprehensive answer, Mr. Trenz!