I've ordered a Sandisk Sansa Clip MP3 player, which charges through the USB connection to the computer. I need a wall wort AC charger for this device, and possibly for other devices in the future, and actually have everything I need for that, including a linear 5V, 1 amp, regulated brick supply and a USB type-A socket.
But I don't know what I should do with the data pins - pins 2 and 3. Should they just be N/C? Should they be tied together, tied high, tied low? Does it matter?
According to this link:
formatting link
an actual upstream USB port (i.e.- the computer) would have these data lines tied low through 15k resistors.
Does anybody know how these lines are actually handled by a typical AC USB charger?
Thanks for any suggestions.