apple-接口定义.doc

Connector pinout for: Apple iPod, iPad and iPhone dock30 pin connector used on the dock station for iPod, iPad and iPhone.Available in all Apple iPod MP3 player (iPod 1G, 2G, 3G, 4G, 5G and Nano). This connector is used on iPod (starting from 3rd generation), iPad and iPhone. It is used to connect the iPod or iPhone to various devices: PC (via USB or FireWire IEEE1394), audio amplifier, serial device (controlled via the Apple Accessory Protocol). Pin Signal Description 1 GND Ground (-), internaly connected with Pin 2 on iPod motherboard 2 GND Audio and 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 the slideshow mode is active on iPod Photo) 9 S-Video Chrominance output for iPod Color, Photo only 10 S-Video Luminance output for iPod Color, Photo only 11 GND Serial GND 12 Tx ipod sending line, Serial TxD 13 Rx ipod receiving line, Serial RxD 14 NC 15 GND Ground (-), internaly connected with pin 16 on iPod motherboard 16 GND USB GND (-), internaly connected with pin 15 on iPod motherboard 17 NC 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 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. 28 TPB (+) FireWire Data TPB (+) 29,30 GND FireWire Ground (-) Notes Signals with grey background may not exist on some docking stations. Apple serial devices (i.e. iTalk and remote control) communicate with iPod (3rd generation or more) using the Apple Accessory Protocol. The serial connection uses a standard 19200 baud 8N1 protocol (the speed can be increased up to 57600 but tends to become unstable). 本人没试过，不知道可否参考。 苹果公司使用了一家名叫JAE公司的接插件,型号为DD1. 这个接口有30针, 接口排列方式为: 1.2.3.4.5.6.7.8.9.29.30 内部焊接点排列为: 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 接口定义为: 1 Ground (-) 地 * 2 Line Out - Common Ground (-) 线路输出 地* 3 Line Out - R (+) R声道线路输出 4 Line Out - L (+) L声道线路输出 5 Line In - R (+) R声道线路输入 6 Line In - L (+) L声道线路输入 7 8 Video Out - Composite Video (for ipod colour when slideshow activated) 复合视频输出 (只有彩屏的ipod有效)* 9 10 11 Serial GND RS-232串口 地 12 Serial TxD RS-232串口 TxD 13 Serial RxD RS-232串口 RxD 14 15 Ground (-) 地 * 16 USB GND (-) USB电源负极 * 17 18 3.3V Power (+) 3.3V电源正极 19 Firewire Power 12 VDC (+) 1394火线12V电源 正极 * 20 Firewire Power 12 VDC (+) 1394火线12V电源 正极* 21 Accessory Indicator 附件识别接口 * 22 FireWire Data TPA (-) 1394火线数据 TPA(-) 23 USB Power 5 VDC (+) USB 5V 电源 正极 24 FireWire Data TPA (+) 1394火线数据 TPA(+) 25 USB Data (-) USB 数据(-) 26 FireWire Data TPB (-) 1394火线数据 TPA(-) 27 USB Data (+) USB 数据(+) 28 FireWire Data TPB (+) 1394火线数据 TPB(+) 29 FireWire Ground (-) 1394火线12V电源 负极* 30 FireWire Ground (-) 1394火线12V电源 负极* 特殊定义: * 1,2 与电路板连接 * 15,16 与电路板连接 * 19,20 与电路板连接 * 21 通过一个电阻连接到地。 不同的阻抗表明不同的辅助部件被连接。 已知的resistances/functions (欧姆) 是如下: 1k0 - iPod 基座 10k - 照相机适配器 500k - RS-232通信 1M0 - Belkin 自动适配器, iPod 自动地关闭了当力量分开了 * 29,30 与电路板连接 * 全部连接在公共地 RS-232连接: 遥控器接口: Wire Color Generation 2 Generation 3 Signalblack Tip Tip Audio, left white Ring (Next-to-tip) Ring Audio, right red Ring 2(3rd ring from end) Ring 2 Audio groundgreen Sleeve (4th ring from end) pin 1 Data to iPodblue inner ring pin 4 Power to remote, +3.3vyellow outermost ring pin 3 Digital ground pin 2 Data from iPod (format unknown) Sleeve no connect / unknown 控制芯片使用的是Microchip 12C508A microcontroller 单片机. 控制码: Button G2 Three Byte Code G3 Seven Byte CodePLAY/PAUSE 0xFF 0xFD 0xF1 0xFF 0x55 0x03 0x02 0x00 0x01 0xFA VOL+ 0xFF 0xFD 0xF2 0xFF 0x55