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6 pin 4 pole 1/8 inch plug + 2 rings iPod proprietary connector layout
6 pin 4 pole 1/8 inch plug + 2 rings iPod proprietary connector
at the cable-side connector of generation 2 iPod
The 3rd generation iPod introduced a new headphone and remote connector, which carries audio data and remote control data to the iPod. The remote control data is sent via a serial Apple Accessory Protocol. Note, on the iphone, itouch, ipad devices, the base ring is used for microphone input.
The pinout should fit 24 devices/models. Click to list>
Wire Color
in cable		 Generation 2
 		 Generation 3
 		 Signal
 
black Tip
 		 Tip
 		 Audio, left
white pin 2 Ring (Next-to-tip)
 		 R1 Ring
 		 Audio, right
red pin 3 Ring (3rd ring from end)
 		 R2 Ring
 		 Audio ground
 
green Sleeve (4th ring from end)
 		 pin 1
 		 Serial RxD
 
blue inner ring
 		 pin 4
 		 Power to remote, +3.3v
 
yellow outermost ring
 		 pin 3
 		 Digital ground
 

 
 		 pin 2
 		 Serial TxD
 

 
 		 sl - Sleeve
 		 Video out on iPod photo and 5 gen iPod

Serial lines are TTL and not compatible RS232 levels - can not be connected directly to PC.

Here is a simple RS232-TTL converter, which may be used to connect iPOD to PC serial port.
PC 9 pin D-SUB --------------------- iPOD special connector
iPod serial computer cable schematic
 
8 pin 4 pole plug + 4 pin iPod proprietary connector layout
8 pin 4 pole plug + 4 pin iPod proprietary connector
at the cable-side connector of generation 3 iPod
Pinout status: +6 -0
According to 6 reports in our database (6 positive and 0 negative) the Apple iPod, iTouch, iPad remote and headphone pinout should be correct.

Is this pinout
NO DIY devices
Apple iPod, iTouch, iPad remote and headphone visual pinout:click to enlarge
Source(s) of this and additional information: Apple iPod Remote Control Protocol, ipodlinux.org, testing
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