USB charging, part 1: requirements [LWN.net]

USB charging, part 1: requirements

Posted Jul 26, 2016 11:26 UTC (Tue) by mathstuf (subscriber, #69389)
In reply to: USB charging, part 1: requirements by eds
Parent article: USB charging, part 1: requirements

Yes, it blocks the data pins to your device, but will negotiate on its behalf (and as a "proof" it doesn't put data through to your device, it doesn't hook the data lines up in that side).

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USB charging, part 1: requirements

Posted Jul 29, 2016 5:38 UTC (Fri) by eds (guest, #69511) [Link] (1 responses)

I can find no evidence that SyncStop / USB condom has anything at all connected to the data lines. Everything I've seen describes it as a passthrough with data lines cut.

But perhaps I just haven't searched hard enough. Do you have a link? Or know of a competing product that does this?

USB charging, part 1: requirements

Posted Jul 29, 2016 5:41 UTC (Fri) by mathstuf (subscriber, #69389) [Link]

It has to communicate with the host for power. Otherwise it's just be a simple cable which doesn't route any of the data lines at all. It doesn't have data lines to the device side though.