The Apple spec is all she has there. Everything Else(TM)* goes like
this:

1.0 Amp charging - tie both data lines together and to nothing else.
0.5 Amp charging - each data line gets its own 15K resistor to ground.

Cheerful regards, Bob

* for most values of Everything

On Fri, Jan 9, 2015, at 02:42 PM, RussellMc wrote:
> On 10 January 2015 at 06:38, Dwayne Reid <dwayner@planet.eon.net> wrote:
>=20
>=20
> > Chargers generally have voltage dividers on the USB data pins to let
> > the phone or whatever how much current is available for charging.  As
> > far as I know, you can short those pins to either ground or plus rail
> > without ill effects.  I just wanted to alert you to the fact that
> > most chargers do indeed use those pins (as opposed to letting them floa=
t).
> >
>=20
> Last time I looked [tm] the "Minty Boost" documentation had a reasonable
> list of what combination worked with which devices.
> Apple have some extremely interesting asymmetric combinations as I
> recall.
>=20
>=20
>           Russell

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