IPOD资料

Distribution: GGEC ® Apple Computer, Inc. ® Apple Computer, Inc. Revision 13 Page 1 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. Revision History Revision RFA History Initial Date 03 N/A Initial Release DJN 12.04.02 04 N/A Accessory Detect Resistor Change DJN 12.04.02 05 N/A Rx, Tx Clarification DJN 01.09.03 06 N/A Accessory Detect Resistor Change DJN 02.04.03 07 N/A Car Charger Detect added DJN 04.02.03 08 N/A Remote protocols added DJN 04.15.03 09 N/A License agreement DJN 07.07.03 10 N/A Picture to show Remote Data lines DJN 07.22.03 11 N/A New serial, add bottom serial SJB 08.04.03 12 N/A 5mA access power note SJB 08.12.03 13 N/A Minor clarifications JLD 01.14.04 iPod Omni and Audio/Remote Interface Specification Manufacturers receiving Apple approved vendor status for their product under this part number: You must not change any mechanical or electrical parameters from those specified in this document without written approval of Apple Computer, Inc. Also, you must not change your design, materials or manufacturing process without written approval of Apple Computer, Inc. Proposed changes determined by Apple to be significant, will require the manufacturer to submit new samples and/or data for review and approval prior to product shipments to Apple Computer, Inc. iPod Omni and Audio/Remote Interface Specification ® Apple Computer, Inc. Revision 13 Page 2 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. 1.0 SCOPE This document specifies Apple Computer’s requirements for both the Omni and Audio/Remote connectors to the iPod. The features described in this specification are supported by versions 2.1 and 2.2 of the iPod firmware unless otherwise noted. 2.0 APPLICABLE DOCUMENTS 2.1 IEEE 1394 A (latest revision) 2.2 USB 2.0 High Speed (latest revision) 3.0 GENERAL REQUIREMENTS 3.1 CONNECTOR PIN DESIGNATIONS: 3.1.1 OMNI: JAE DD1 30 pin connector series Pin Signal name I/O Function 1 F/W GND I Firewire and charger ground 2 F/W GND I Firewire and charger ground 3 TPA+ I/O Firewire signal 4 USB D+ I/O USB signal 5 TPA- I/O Firewire signal 6 USB D- I/O USB signal 7 TPB+ I/O Firewire signal 8 USB PWR I USB power in. NOT for powering; only to detect USB host. 9 TPB- I/O Firewire signal 10 Accessory Identify I Pull down in dock to notify iPod of specific device 11 F/W PWR+ I Firewire and charger input power (8v to 30v dc) 12 F/W PWR+ I Firewire and charger input power (8v to 30v dc) 13 ACCESSORY PWR(3V3) O 3.3v output from iPod. Current limited to 100mA. 14 Reserved 15 USB GND GND Digital ground in iPod 16 DGND GND Digital ground in iPod 17 Reserved 18 Dock Tx I Serial protocol (Data To iPod) 19 Dock Rx O Serial protocol (Data From iPod) 20 Accessory Detect I/O 21 Reserved iPod Omni and Audio/Remote Interface Specification ® Apple Computer, Inc. Revision 13 Page 3 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. 22 Reserved 23 Reserved 24 Reserved 25 LINE-IN L I Line level input to the iPod for the left channel 26 LINE-IN R I Line level input to the iPod for the right channel 27 LINE-OUT L O Line level output to the iPod for the left channel 28 LINE-OUT R O Line level output to the iPod for the right channel 29 Audio Return GND Audio return – Signal, never to be grounded inside accessory 30 DGND GND Digital ground in iPod 31 Chassis Chassis ground for connector shell 32 Chassis Chassis ground for connector shell 3.1.2 AUDIO/REMOTE: 8 pin Foxconn Apple Custom Pin Signal name I/O Function 1 Audio Out Left / Mono Mic In I/O 30mW audio out left channel, also doubles as mono mic in 2 HP Detect I Internal Switch to detect plug insertion 3 Audio Return GND Audio return for left and right audio 4 Audio Out Right O 30mW audio out right channel 5 Reserved 6 Accessory 3.3V O 3.3V Accessory power 100mA max 7 Tx O Serial protocol (Data from iPod to Device) 8 Rx I Serial protocol (Data to iPod from Device) 9 D GND GND Digital ground for accessory yesea Inserted Text yesea Note 23 Video Out - Composite Video (for ipod colour when slideshow activated) 复合视频输出 (只有彩屏的ipod有效)****** iPod Omni and Audio/Remote Interface Specification ® Apple Computer, Inc. Revision 13 Page 4 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. 4.0 FUNCTIONAL DESCRIPTION 4.1 Devices shall be inspected by the iPod engineering team to assure compliance to the requirement as defined in this specification. 4.2 Omni Connector Functional Description: 4.2.1 FireWire Power: a) 8V – 30V DC IN b) 10W Max 4.2.2 FireWire: a) Designed to IEEE 1394 A Spec (400 Mb/s) b) Note Digital twisted pair of wires need to be reversed per IEEE 1394 A spec, please refer to below 30P to FireWire cable diagram: 4.2.3 USB 2.0: a) Designed to USB 2.0 High Speed Spec b) USB Power (pin 8 on the 30-pin connector) is not used for powering device; only used to detect a USB host connection. 4.2.4 Accessory 3.3V Power: a) 3.3V @ 100mA max power allowed b) Note – 100mA max shared between Omni & Audio/Remote connectors c) Note – 5mA MAX current default, proper SW accessory detect will turn on supply to allow 100mA. d) Grounded through F/W GND e) Reference Schematic Diagram below: iPod Omni and Audio/Remote Interface Specification ® Apple Computer, Inc. Revision 13 Page 5 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. 4.2.5 Accessory Detect/Identify: a) A simple resistor to ground allows the iPod to determine what has been plugged into Omni connector. There is an internal pullup on Accessory Identify. b) Two pins required (Accessory Identify & Accessory Detect) c) Reference Schematic Diagram below: iPod Omni and Audio/Remote Interface Specification ® Apple Computer, Inc. Revision 13 Page 6 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. d) Below are the Specified Resistor values for known accessories: Accessory Identify Resistors calculations Internal pullup (k): Internal pullup (k): 100 100 A/D RANGE nominal value for choose a 1% FUNCTION: MIN TYP MAX Pulldown resistor (K): pulldown resistor (K): 3.03 3.01 Simple Dock 0 7.5 15 10.15 10.2 Reserved 16 23.6 31 18.33 18.2 32 39.3 47 27.82 28.0 48 55.8 63 38.96 39.2 64 71.8 79 52.24 52.3 80 87.6 95 68.32 68.1 96 103.3 111 88.19 88.7 Diag Dock 112 119.9 127 113.39 113 128 135.3 143 146.38 147 144 151.8 159 191.43 191 160 167.4 175 256.64 255 Battery Pack 176 183.2 191 359.46 360 192 199.6 207 545.57 549 UART Dock 208 215.7 223 985.11 1000 Car Charger 224 231.8 239 3300.00 3010 unusable 240 246.8 255 4.2.6 Serial Protocol Communication: a) Two pins used to communicate to and from iPod (Rx & Tx) b) Input & Output (0V=Low; 3.3V=High) c) A device with a 549kΩ identity resistor (ID #13) is a serial dock accessory. These devices use the standard serial protocol but only through the bottom/Omni connector. Attaching a serial dock accessory makes any top-attached (Audio/Remote) accessories inactive. d) Please note that the serial protocol is for reference only. All devices and protocols must be checked and approved by iPod engineering. 4.2.7 Line Level Input (Left & Right): a) Stereo audio input b) Input Level 1V RMS (max) iPod Omni and Audio/Remote Interface Specification ® Apple Computer, Inc. Revision 13 Page 7 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. c) Audio Return: NOT a ground – treat it as a signal. Left and right audio are referenced to Audio Return. 4.2.8 Line Level Output (Left & Right): a) Stereo audio output does not have volume control and is not adjusted by device b) Output level 1V RMS (max) c) Audio Return: NOT a ground – treat it as a signal. Left and right audio are referenced to Audio Return. 4.2.9 Overall Grounding Requirements: a) Chassis ground is tied to specified pins b) Digital ground should not be tied to Audio Return 1.3 Audio/Remote Functional Description: 1.1.1 Audio Out: a) Stereo Output ~30mW per channel volume controlled by device (when driven into a 32 Ω load) 1.1.2 Mono Mic In (depending on the mic element a preamp may be required): a) Mono mic in through Left channel b) Filtered electret power supplied by internal device c) Reference schematic below: 1.1.3 Accessory 3.3V Power (same as Omni connector): a) 3.3V @ 100mA max power allowed b) Note – 100mA max shared between Omni & Audio/Remote connectors c) Note – 5mA, max current is the default; proper software accessory detect will turn on supply to allow 100mA. d) Grounded through D GND e) Reference Schematic Diagram below: iPod Omni and Audio/Remote Interface Specification ® Apple Computer, Inc. Revision 13 Page 8 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. 1.1.4 Serial Protocol Communication: a) Two pins used to communicate to and from iPod (Rx & Tx) b) Input & Output (0V=Low, 3.3V=High) c) A device with a 549kΩ identity resistor (ID #13) is a serial dock accessory. These devices use the standard serial protocol but only through the bottom/Omni connector. Attaching a serial dock accessory makes any top-attached (Audio/Remote) accessories inactive. d) Please note that the serial protocol is for reference only. All devices and protocols must be checked and approved by iPod engineering. iPod Omni and Audio/Remote Interface Specification ® Apple Computer, Inc. Revision 13 Page 9 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. 5.0 SERIAL PROTOCOL This is the specification for the 2.1 iPod software implementation. In pre-2.1 software nothing related to RF Transmitters (lingo 0x05) is supported. Apple must approve every accessory before release, in part to verify correct operation. Protocol Generalities The protocol builds upon the RS-232 serial specification. However, the signaling levels are non- standard. In true RS-232, a mark is –7V and a space is 7V. In this protocol, a mark is 3.3V and a space is 0V. The signaling rate for this protocol is 19,200bps. All signaling is at 8 bits data, no parity and one stop bit (8-N-1). This protocol is to be used in both directions of a link. Every device is encouraged to implement both sending and receiving capabilities. It should be possible to determine the direction (host to device or device to host) of a packet from its contents only. This means that no packet is valid for sending from both the host and device. All devices must be able to handle variable-length packets. For example, even though an identify packet currently has no defined data, a device must be able to understand an identify packet with data and should respond to the best of its ability. It must at least not lose sync to the packet signaling. Extra-packet signaling Upon power up a device should wait 80ms and then send a sync byte (see below). It should then wait 20ms more and then identify itself. Upon receipt of a break signal the device should cease transmitting for the duration of the break. It is recommended that a device should reset itself upon receipt of this break. The device should re-identify itself using the same sequence above (80ms, sync, 20ms, ID). A device must also re-identify itself if a request identify command is received. Neither end of the protocol should delay for more than 20ms in the middle of a packet. iPod Omni and Audio/Remote Interface Specification ® Apple Computer, Inc. Revision 13 Page 10 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. Packet format Byte number Value Meaning 0x00 0xFF Sync byte 0x01 (SOP) 0x55 (‘U’) Packet start byte 0x02 xx Packet payload length 0x03 xx Lingo ID 0x04 xx Command ID 0x05… xx Command data (last) (EOP) xx Packet payload checksum Note that the Command ID and command data format for packets with as-yet unspecified Lingos may not follow the packet payload format (Command ID, Command data) indicated here. Also note that packet payload length 0x00 is reserved for longer packets. The packet format for longer packets is as below. Byte number Value Meaning 0x00 0xFF Sync byte 0x01 (SOP) 0x55 (‘U’) Packet start byte 0x02 0x00 Packet payload length marker 0x03 xx High byte of packet payload length 0x04 xx Low byte of packet payload length 0x05 xx Lingo ID 0x06 xx Command ID 0x07… xx Command data (last) (EOP) xx Packet payload checksum This should be used for packets of 128 (0x80) bytes or longer (packet payload length). These longer packets are not understood before iPod Software 2.1. As such, it should be avoided whenever possible, especially in General or Simple Remote lingos. The sync byte is not considered part of the packet. It is sent merely to facilitate baud rate corrections. The packet payload length is the number of bytes in the packet not including the sync byte, packet start byte, packet payload length byte, or packet payload checksum. That is, it is the length of the Command ID plus the Command data. Note that in all tables below the data length does not count the Command ID. Thus the packet payload data length for a request identify would be 0x01. The Lingo ID specifies the broad category this communication falls under. The command ID is a more specific indication of the significance of the packet. iPod Omni and Audio/Remote Interface Specification ® Apple Computer, Inc. Revision 13 Page 11 of 22 NOTICE OF PROPRIETARY PROPERTY: THE INFORMATION CONTAINED HEREIN IS THE PROPRIETARY PROPERTY OF APPLE COMPUTER, INC. THE POSSESSOR AGRESS TO THE FOLLOWING: (I) TO MAINTAIN THIS DOCUMENT IN CONFIDENCE, (II) NOT TO REPRODUCE OR COPY IT,(III) NOT TO REVEAL OR PUBLISH IT IN WHOLE OR IN PART,(IV) ALL RIGHTS RESERVED. ACCESS TO THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN IS GOVERNED BY THE TERMS OF THE IPOD TECHNOLOGY EVALUATION LICENSE AGREEMENT. ALL OTHER USE SHALL BE AT APPLE’S SOLE DISCRETION. The sum of all the bytes from the packet payload length (marker, if applicable) through the packet payload checksum is 0. The checksum should be calculated appropriately. Lingo specifications Lingo ID General 0x00 Microphone 0x01 Simple Remote 0x02 Display Remote 0x03 RF transmitter 0x05 The general lingo is shared for housekeeping commands across all devices. The microphone lingo is used by the mono Audio/Remote connector on the iPod. The simple remote lingo is used by Apple’s standard in-line remote control (P93A). The display remote lingo is reserved for a device with similar functionality to the P93A remote but with a display for status. General lingo specification Command ID Data length Request identify 0x00 0x00 Identify 0x01 0x01+ The host may send a request identify to the device to ask the device to re-identify itself. There is no currently defined request identify data. The device sends an identify packet to identify itself. At this time multifunction (combo) devices are not supported. The identify data payload is thus the command ID 0x01 followed by a single byte of the same value as the same as the lingo specification of the functionality the device implements unless specified otherwise. The identify packet returned in response to a request identify packet does not need to have the extra sync bytes and delays used during the startup process. Simple Remote lingo specification Command ID Data length Buttons status 0x00 0x00+ A simple remote device sends a buttons status command to indicate an updated status of which buttons are held down. The data of the packet is a number of