Apple 30-pin Dock Connector


30-pin Apple ipod/iphone connector

PinNameDescription
1GNDGround
2Audio & Video ground
3Right OutLine Out Right Ch.
4Left OutLine Out Left Ch.
5Right InLine In Right Ch.
6Left InLine In Left Ch.
7(Video Ground)
8Composite Video Outwhen slideshow active on iPod Photo
Component Video Pb
9S-Video Chrominance Outfor iPod Color, Photo only
Component Video Y
10S-Video Luminance Outfor iPod Color, Photo only
Component Video Pr
11AUDIO_SWIf connected to GND the iPhone sends audio signals through pin 3-4.
GNDSerial Ground
12TXSerial TXD (device sending)
13RXSerial RXD (device receiving)
14n.c.Reserved
15GNDGround
16USB GND
17n.c.Reserved
183.3V3.3V Power (*)
19+12VFirewire Power +12 VDC
20
21Accessory IndicatorResistor to ground (**)
Serial enable
22TPA -FireWire Data TPA -
23+5VUSB Power +5 VDC
24TPA +FireWire Data TPA +
25Data -USB Data - (***)
26TPB -FireWire Data TPB -
27Data +USB Data + (***)
28TPB +FireWire Data TPB +
29GNDFireWire Ground
30

Signals with grey background may not exist on some docking stations.


(*) Stepped up to provide +5 VDC on iPod Camera Connector.

(**) Resistances indicate accessory type:


(***) Pins 25 and 27 may be used in different manner: