|Descripción del pinout de los conectores "dock" utilizados por Apple en sus Ipods, Ipads, Iphones...|
|1||GND||Ground (-), internaly connected with Pin 2 on iPod motherboard|
|2||GND||Audio & Video ground (-), internaly connected with Pin 2 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)|
|9||S-Video Chrominance output||for iPod Color, Photo only|
|10||S-Video Luminance output||for iPod Color, Photo only|
|12||Tx||ipod sending line, Serial TxD|
|13||Rx||ipod receiving line, Serial RxD|
|15||GND||Ground (-), internaly connected with pin 16 on iPod motherboard|
|16||GND||USB GND (-), internaly connected with pin 15 on iPod motherboard|
|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
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 Resister.
|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.
|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 30 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
This device may be connected to the firewire computer port by straight cable (TPB+/-, TPA +/- shoulde be twisted pairs in cable)
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