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Posts: 465 | Thanked: 149 times | Joined on Oct 2007
#1
I was initially under the impression that the N800 could not supply more than 100mA of current to USB devices, but after messing around with host mode, it seems the maximum is actually ~200mA?

If I connect an externally powered device (not drawing current from the N800), dmesg shows 198mA of current available on the USB bus.

From looking at the power management ic datasheet, I think it's saying 200mA is the absolute maximum supply, with 100mA as the recommended maximum.

Is there any danger connecting devices that consume more than 100mA?

I would assume the N800 would simply disconnect any devices that require more current than can be supplied, but I'd rather not risk any damage.

So.. aside from either sucking up more juice, or being shut off, is there anything I should worry about?