![]() Once everything is properly set up, the controller/driver chip gets digital signals from the SoC and converts them – via serial/parallel, ADC/DAC, differential drivers or whatever – to whatever is needed by the interface on the other end of the adapter or cable.The device can then switch the other pins between the SoC’s data lines or the power circuitry, as needed in each case. ![]() 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. ![]()
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