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8 pin Apple Lightning proprietary of Apple Lightning connector connector layout
8 pin Apple Lightning proprietary connector
at the cable
Apple Lightning is a proprietary computer bus and power connector created by Apple Inc. to replace its previous proprietary 30-pin dock connector. It intended to connect mobile devices like iPhone 5, iPod touch 5g or iPad mini to host computers.
Pin
Number
Pin
Name
Description
1 GND ground
2 L0p lane 0 positive
3 L0n lane 0 negative
4 ID0 identification/control 0
5 PWR power (charger or battery)
6 L1n lane 1 negative
7 L1p lane 1 positive
8 ID1 identification/control 1

Apple Lightning interface is adaptive - the controller chip dynamically assign pins function according to plugged device.

The Apple Lightning connector plug can be inserted with either side facing up (the processor inside the plug detects the plug's orientation and routes the electrical signals to the correct pins).Two differential pair lanes (L0p/n and L1p/n) may swap in IC of device connector (lanes don't swap if accessory identification chip connect to ID0 pin). 

Two differential pair lanes (L0p/n and L1p/n) may swap in IC of device connector (lanes don't swap if accessory identification chip connect to ID0 pin) also you don't want to swap out cables with another iPID0 pin) also you don't want to swap out cables with another iPhone/iPad user as there seems to be memory issues if you do; your device will no longer charge w/ the shared Lightning Cable.

Apple included an authentication chip in the Lightning cables which was already explored and reproduced by some chinese manufacturers.

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There are 3 reports in our database: 3 positive and 0 negative.
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