아이폰 30핀 커넥터 배열

Pin	Signal	Description
30	GND	Ground (-), internaly connected with Pin 2 on iPod motherboard
29	GND	Audio and Video ground (-), internaly connected with Pin 2 on iPod motherboard
28	Right	Line Out - R (+) (Audio output, right channel)
27	Left	Line Out - L(+) (Audio output, left channel)
26	Right In	Line In - R (+)
25	Left In	Line In - L (+)
23	Video Out	Composite video output (only when the slideshow mode is active on iPod Photo)
22	S-Video Chrominance output	for iPod Color, Photo only
21	S-Video Luminance output	for iPod Color, Photo only
20	GND	Serial GND
19	Tx	ipod sending line, Serial TxD
18	Rx	ipod receiving line, Serial RxD
17	NC
16	GND	Ground (-), internaly connected with pin 16 on iPod motherboard
15	GND	USB GND (-), internaly connected with pin 15 on iPod motherboard
14	NC
13	3.3V	3.3V Power (+) Stepped up to provide +5 VDC to USB on iPod Camera Connector. If iPod is put to sleep while Camera Connector is present, +5 VDC at this pin slowly drains back to 0 VDC.
11,12	+12V	Firewire Power 12 VDC (+)
10	Accessory Indicator/Serial enable	Different resistances indicate accessory type: 1KOhm - iPod docking station, beeps when connected 10KOhm - Takes some iPods into photo import mode 68kOhm - makes iPhone 3g send audio through line-out without any messages 500KOhm - related to serial communication / used to enable serial communications Used in Dension Ice Link Plus car interface 1MOhm - Belkin auto adaptor, iPod shuts down automatically when power disconnected Connecting pin 21 to ground with a 1MOhm resistor does stop the ipod when power (i.e. Firewire-12V) is cut. Looks to be that when this pin is grounded it closes a switch so that on loss of power the Ipod shuts off. Dock has the same Resistor.
9	TPA (-)	FireWire Data TPA (-)
8	5 VDC (+)	USB Power 5 VDC (+)
7	TPA (+)	FireWire Data TPA (+)
6	Data (-)	USB Data (-)
5	TPB (-)	FireWire Data TPB (-)
4	Data (+)	USB Data (+) Pins 25 and 27 may be used in different manner. To force the iPod 5G to charge in any case, when 'USB Power 5 VDC' (pin 23) is fed, 25 must be connected to 5V through a 10KOhm resistor, and 27 must be connected to the Ground (for example: pin 1) with a 10KOhm resistor.
3	TPB (+)	FireWire Data TPB (+)
1.2	GND	FireWire Ground (-)