http://bbs.shanzhaiji.cn/viewthread.php?tid=134467
iPhone 連接座腳位定義
接口排列方式為:
1.2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29.30
內部銲接點排列為:
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
接口定義為:
1 Ground (-) 地 *
2 Line Out - Common Ground (-) 線路輸出 地*
3 Line Out - R (+) R聲道線路輸出
4 Line Out - L (+) L聲道線路輸出
5 Line In - R (+) R聲道線路輸入
6 Line In - L (+) L聲道線路輸入
7 Remoute Sense(感應)
8 Video Out - Composite Video (for ipod colour when slideshow activated) 復合
視頻輸出 (只有彩屏的ipod有效)******
9 S Video C/Component Video Y(
10 S Video Y/Component Video Pr
11 Serial GND RS-232串口 地
12 Serial TxD RS-232串口 TxD
13 Serial RxD RS-232串口 RxD
14Reserved
15 Ground (-) 地 **
16 USB GND (-) USB電源負極 **17 Reserved
18 3.3V Power (+) 3.3V電源正極
19 Firewire Power 12 VDC (+) 1394火線12V電源 正極 ***
20 Firewire Power 12 VDC (+) 1394火線12V電源 正極***
21 Accessory Indicator 附件識別接口 ****
22 FireWire Data TPA (-) 1394火線數據 TPA(-)
23 USB Power 5 VDC (+) USB 5V 電源 正極
24 FireWire Data TPA (+) 1394火線數據 TPA(+)
25 USB Data (-) USB 數據(-)26 FireWire Data TPB (-) 1394火線數據 TPA(-)
27 USB Data (+) USB 數據(+)28 FireWire Data TPB (+) 1394火線數據 TPB(+)
29 FireWire Ground (-) 1394火線12V電源 負極*****30 FireWire Ground (-) 1394火線12V電源 負極*****
特殊定義:
* 1,2 與電路板連接
** 15,16 與電路板連接
*** 19,20 與電路板連接
**** 21 通過一個電阻連接到地。 不同的阻抗表明不同的輔助部件被連接。
已知的resistances/functions (歐姆) 是如下:
1k0 - iPod 基座
10k - 照相機適配器
500k - RS-232通信
1M0 - Belkin
自動適配器, iPod 自動地關閉了當力量分開了
***** 29,30 與電路板連接
****** 全部連接在公共地
C6的USB的四隻腳是16 25 27 29我看到是一樣的不知道其他的腳位功能也是一樣！
拆開的 iPhone USB Cable
iphone 3G/3GS/4 傳輸線 6蕊
01 Ground (-)
15 Ground (-)
16 USB GND (-)
23 USB Power 5 VDC (+)
25 USB Data (-)
27 USB Data (+)
| Pin | Signal | Description |
| 1 | GND | Ground (-), internally connected with Pin 2 on iPod motherboard |
| 2 | GND | Audio & Video ground (-), internally connected with Pin 1 on iPod motherboard |
| 3 | Right | Line Out - R (+) (Audio output, right channel) |
| 4 | Left | Line Out - L(+) (Audio output, left channel) |
| 5 | Right In | Line In - R (+) |
| 6 | Left In | Line In - L (+) |
| 8 | Video Out | Composite video output (only when slideshow active on iPod Photo)
or Component Video Pb |
| 9 | S-Video Chrominance output | for iPod Color, Photo only
or Component Video Y |
| 10 | S-Video Luminance output | for iPod Color, Photo only
or Component Video Pr |
| 11 | AUDIO_SW | If connected to GND the iPhone sends audio signals through pin 3-4, otherwise it uses onboard speaker. |
| 12 | Tx | ipod sending line, Serial TxD |
| 13 | Rx | ipod receiving line, Serial RxD |
| 14 | RSVD | Reserved |
| 15 | GND | Ground (-), internally connected with pin 16 on iPod motherboard |
| 16 | GND | USB GND (-), internally connected with pin 15 on iPod motherboard |
| 17 | RSVD | Reserved |
| 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. |
| 19,20 | +12V | Firewire Power 12 VDC (+) |
| 21 | Accessory Indicator/Serial enable | Different resistances indicate accessory type:
1kOhm - iPod docking station, beeps when connected
10kOhm - Takes some iPods into photo import mode
6.8 kΩ - Serial port mode. Pin 11-13 are TTL level. Requires MAX232 chip to convert to RS232 levels.
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. |
| 22 | TPA (-) | FireWire Data TPA (-) |
| 23 | 5 VDC (+) | USB Power 5 VDC (+) |
| 24 | TPA (+) | FireWire Data TPA (+) |
| 25 | Data (-) | USB Data (-) |
| 26 | TPB (-) | FireWire Data TPB (-) |
| 27 | 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.
iPod 5G can also be forced to charge by attaching the data + and the data - pins to the 5v via a 10k Ohm resistor ( BOTH PINS) and connecting pin 16 to the 5v (ground). (Confirmed working with iPod 5G 20GB). This provides 500mA of current for charging. For quicker charing, up to 1A, see below.
To charge an iPhone 3G / iPod Touch 2nd gen or Ipod Classic (6th Gen), usb data- (25) should be at 2.8v, usb data+(27) should be at 2.0v. This can be done with a few simple resistors: 33k to +5v (23) and 22k to gnd(16) to obtain 2v and 33k to +5v and 47k to gnd to obtain 2.8v. This is a notification to the iphone that it is connected to the external charger and may drain amps from the usb.
To charge iPod Nano pins 25 and 27 should be tied together and then connected to a 10K ohm resistor, and the other side of this resistors then needs to be connected to 5v power.
It's also possible to charge the iPod's or iPhone's battery to make use the of internal +3.3v output (18) terminal to connect the USB Data + (27) thru a 47k ohms resistor and the USB Data- (25) thru a 47k resistor to the USB Power source +5v (23). This way the USB function is still useable for normal operations and makes it easier the fit in a plug. The resistors are not to critical 2x 150k's still work. |
| 28 | TPB (+) | FireWire Data TPB (+) |
| 29,30 | GND | FireWire Ground (-) |
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.
If you disassemble the original apple-ipod-dock-connector-cable and look at the connector itself, on the back side, where it is soldered, you can see the number 1 and 30 (e.g. pin 1 and 30). In this description NUMBERING is INVERSED: pin 1 is pin 30 and pin 29 is pin 2, so, don't look at numbers on connector.
The remote control, iTalk and other serial devices use Apple Accessory Protocol for communication with iPOD. This protocol was introduced with the 3rd generation iPods, and is also compatible with the 4th generation iPods and mini iPods. The connections uses a standard 8N1 (one startbit 8 data bits 1 Stopbit) serial protocol, 19200 baud (higher rates up to 57600 also possible, but speed faster than 38400 may cause problems with large amounts of data), delay of 12 microseconds inserted between end of the stopbit and the beginning of the next startbit (also working without this delay).
Electrical: high +3,3V low 0V
default line state: high. Codes used for communication with peripherals
are here
