The controller/driver chip tells the device what type it is, and for cases like the Lightning-to-USB cable whether a charger (that sends power) or a device (that needs power) is on the other end. This avoids any shorting hazard while the plug isn't inside the connector. The pins on the plug are deactivated until after the plug is fully inserted, when a wake-up signal on one of the pins cues the chip inside the plug. The device watches for a momentary short on all pins (by the leading edge of the plug) to detect plug insertion/removal. The outer plug shell is used as ground reference and connected to the device shell.Īt least one (probably at most two) of the pins is used for detecting what sort of plug is plugged in.Īll plugs have to contain a controller/driver chip to implement the “adaptive” thing.
According to Apple, it as an all-digital connector and 'features an adaptive interface that uses only the signals that each accessory requires and also is 80% smaller as well as orientation independent.'Īll 8 pins are used for signals, and all or most can be switched to be used for power. (For the old connector, see 30-pin Connector.) It was presented by Tim Cook at an Apple Special Event on September 12, 2012.
Lightning is the 'new' connector supported by iPhone 5 and newer, iPad mini 1G and newer, iPad 4 and newer, and iPod touch 5G. IPhone 5 9 Female Pin Lightning Connector Unsoldered
