Information about cable, connector or adapter : Apple iPod and iPhone (2g, 3g) Dock Interfaces pinout  

 Apple iPod and iPhone (2g, 3g) Dock Interfaces pinout
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 Category :   All cables and connectors > Connectors > Cellular Phones >
 Added to database : 2009-12-28 12:44:20

 Description : Used in 3rd and later generation iPods for charging, connecting to a PC via USB or Firewire, to a stereo via line-out, to a serial device (controlled via the Apple Accessory Protocol). This connector exists in most Apple iPod MP3 players (iPod 3G, 4G, 5G Video, 5.5G Video, Nano (1G, 2G, 3G, 4G), Mini, Classic, Touch, Touch 2G, and iPhone (1G, 3G and 3GS))

 Apple iPod and iPhone (2g, 3g) Dock Interfaces pinout

 Pinout : 0

1GNDGround (-), internally connected with Pin 2 on iPod motherboard
2GNDAudio & Video ground (-), internally connected with Pin 2 on iPod motherboard
3RightLine Out - R (+) (Audio output, right channel)
4LeftLine Out - L(+) (Audio output, left channel)
5Right InLine In - R (+)
6Left InLine In - L (+)
8Video OutComposite video output (only when slideshow active on iPod Photo)
9S-Video Chrominance outputfor iPod Color, Photo only
10S-Video Luminance outputfor iPod Color, Photo only
11GNDSerial GND
12Txipod sending line, Serial TxD
13Rxipod receiving line, Serial RxD
15GNDGround (-), internally connected with pin 16 on iPod motherboard
16GNDUSB GND (-), internally connected with pin 15 on iPod motherboard
183.3V3.3V 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.
19,2+12VFirewire Power 12 VDC (+)
21Accessory Indicator/Serial enaDifferent resistances indicate accessory type:1kOhm - iPod docking station, beeps when connected10kOhm - Takes some iPods into photo import mode68kOhm - makes iPhone 3g send audio through line-out without any messages500kOhm - related to serial communicat
22TPA (-)FireWire Data TPA (-)
235 VDC (+)USB Power 5 VDC (+)
24TPA (+)FireWire Data TPA (+)
25Data (-)USB Data (-)
26TPB (-)FireWire Data TPB (-)
27Data (+)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
28TPB (+)FireWire Data TPB (+)
29,3GNDFireWire Ground (-)

 Note : Back side of dock connector; 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 Pins 1,2 connected on motherboard. Pins 15,16 connected on motherboard. Pins 19,20 connected on motherboard. Pins 29,30 connected on motherboard.