Pin | Signal | Description | Apple pin numbering* |
1 | GND | Ground (-), internally connected with Pin 2 on iPod motherboard | 30 |
2 | GND | Audio & Video ground (-), internally connected with Pin 1 on iPod motherboard | 29 |
3 | Right | Line Out - R (+) (Audio output, right channel) | 28 |
4 | Left | Line Out - L(+) (Audio output, left channel) | 27 |
5 | Right In | Line In - R (+) | 26 |
6 |
Left In | Line In - L (+) | 25 |
7 | ? | 24 | |
8 | Video Out |
Composite video output (only when slideshow or | 23 |
9 | S-Video Chrominance output |
for iPod Color, Photo only or | 22 |
10 | S-Video Luminance output |
for iPod Color, Photo only or | 21 |
11 | AUDIO_SW | If connected to GND the iPhone sends audio signals through pin 3-4, otherwise it uses onboard speaker. | 20 |
12 | Tx | ipod sending line, Serial TxD | 19 |
13 | Rx |
ipod receiving line, Serial RxD | 18 |
14 | RSVD | Reserved | 17 |
15 | GND | Ground (-), internally connected with pin 16 on iPod motherboard | 16 |
16 | GND | USB GND (-), internally connected with pin 15 on iPod motherboard | 15 |
17 | RSVD | Reserved | 14 |
18 | 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. | 13 |
19,20 | +12V | Firewire Power 12 VDC (+) | 11,12 |
21 | Accessory Indicator/Serial enable |
Different resistances indicate accessory 6.8 kΩ | 10 |
22 | TPA (-) | FireWire Data TPA (-) | 9 |
23 | 5 VDC (+) | USB Power 5 VDC (+) | 8 |
24 | TPA (+) | FireWire Data TPA (+) | 7 |
25 | Data (-) | USB Data (-) | 6 |
26 | TPB (-) | FireWire Data TPB (-) | 5 |
27 | Data (+) |
USB Data (+) iPod 5G can also be forced to charge by To charge To charge It‘s also possible to charge the iPod‘s or Added correction: iPod 2.1A charger | 4 |
28 | TPB (+) | FireWire Data TPB (+) | 3 |
29,30 | GND | FireWire Ground (-) | 1,2 |
[转]Apple iPod, iPhone (2g, 3g), iPad Dock connector
pinout