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文库首页行业电信MFi Accessory Interface Specification iOS 8 Developer Preview R2-No Watermark

MFi Accessory Interface Specification iOS 8 Developer Preview R2...

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苹果（Apple）英文原版MFi规范，用于iOS 8.0测试版的开发者预览版规范，详细说明了与具有 Apple Lightning™ 头的 Apple 设备连接的配件的要求和建议,方便配件开发商计划采用本文所述的配件接口功能；同时这文件已解密及去除水印，方便大家copy(参考代码等）及分享！

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MFi Accessory Interface Specification iOS 8 Developer Preview R2

MFi Accessory Interface Specification iOS 8 Developer Preview R2-No Watermark.zip

MFi Accessory Interface Specification iOS 8 Developer Preview R2-No Watermark.pdf

MFi Accessory Interface Specification iOS 8 Developer Preview R2-No Watermark.pdf

MFi Accessory Interface

Specification

iOS 8 Developer Preview R2

Contents

1. Introduction 35

1.1 Purpose of This Specification 35

1.2 Requirements, Recommendations, and Permissions 35

1.3 Applicability 36

1.4 Terminology 37

1.4.1 Accessory, Device, and Product 37

1.4.2 Authentication Coprocessor 37

1.4.3 I2C Bus 37

1.4.4 Challenge 37

1.4.5 Challenge Response 37

1.4.6 X.509 Certificate 38

1.4.7 Component 38

1.4.8 Feature 38

1.4.9 USB Device and Host Mode 38

1.4.10 iAP 38

1.4.11 Direct User Action 39

2. General Requirements and Recommendations 40

2.1 Development Tools and Emulators 40

2.2 Accessory Authentication and Accessory Identification 40

2.3 iAP1 40

2.4 iAP2 40

2.5 Detachable Connector Assemblies 41

2.6 Adapters and Proxies 41

2.7 Mixed 30pin and Lightning Connectors 41

2.8 Mixed Headphone Jack and Lightning Connectors 43

2.9 Apple Device Detection 44

2.10 Multiple Simultaneous iAP2 Connections 44

2.11 Presentation of Apple Device Updates 44

2.12 Relationships Between Multiple Accessories 45

2.13 iBeacon 45

2.14 Readiness for Audio Streaming 45

2.15 Multiple Audio Connections 45

2.16 Audio Input Source Switching 46

2.17 Feature Duplication 46

2.18 Copy Protection of Digital Audio Output 47

2.19 Temperature Range 47

2.20 Magnetic Fields 47

2.21 USB Host Mode Passthroughs 47

2.22 USB Signal Integrity 47

2.23 Cables with USB Connectors 47

2.24 Cables with NonUSB Connectors 48

2.25 Integrated USB Receptacles 49

2.26 Integrated NonUSB Receptacles 49

2.27 User Supplied Cables and Power Supplies 50

2.28 Removable Storage 50

2.29 RF Transmission and Reception 50

2.30 TDMA Noise 51

3. Apple Authentication Coprocessor 2.0C 52

3.1 Coprocessor 2.0C Overview 52

3.2 Coprocessor 2.0C Authentication Protocol 52

3.3 Coprocessor 2.0C Signals and Pinouts 52

3.4 Coprocessor 2.0C Address Selection 53

3.5 Coprocessor 2.0C Reference Circuit 54

3.6 Coprocessor 2.0C System Voltage 54

3.7 Coprocessor 2.0C I2C Interface 55

3.7.1 I2C Startup On Power On 55

3.7.2 I2C Startup On Warm Reset 56

3.7.3 I2C Communications Process 57

3.7.4 I2C Sleep Mode 58

3.8 Coprocessor 2.0C Registers 58

3.8.1 Register Addresses 58

3.8.2 Register Descriptions 61

3.9 Coprocessor 2.0C I2C Protocol 67

3.9.1 Slave Selection and Reset 68

3.9.2 Coprocessor Busy 68

3.9.3 Writing to the Coprocessor 68

3.9.4 Reading from the Coprocessor 68

3.10 Coprocessor 2.0C Device Characteristics 69

3.10.1 Physical Configuration 69

3.10.2 Maximum Environmental Conditions 75

3.10.3 Recommended Operating Conditions 75

Contents

3.10.4 I2C Interface Characteristics 75

3.10.5 DC Electrical Characteristics 76

3.10.6 Timing Characteristics 76

4. Apple Lightning Connector 78

4.1 Comparison with the 30pin Connector 78

4.1.1 Dimensions 78

4.1.2 Active Component 78

4.1.3 Reversability 79

4.1.4 Accessory Identify 79

4.1.5 Accessory Detect 79

4.1.6 Apple Device Detect 79

4.1.7 Analog Audio 79

4.1.8 Analog Video 79

4.1.9 DisplayPort Video 79

4.2 Connector Versions 79

4.3 Connector Pad/Pin Configuration 87

4.4 Connector Mechanical Requirements 91

4.4.1 General Mechanical Requirements 92

4.4.2 Cable Accessory Mechanical Requirements 93

4.4.3 Lightning (C48) Cable Accessory Mechanical Requirements 95

4.4.4 FormFitting Accessory Mechanical Requirements 101

4.4.5 Dongle Accessory Mechanical Requirements 101

4.4.6 Dock Accessory Mechanical Requirements 101

4.5 Connector Electrical Requirements 107

4.5.1 Connector Ground Pad/Pin Connection Requirements 107

4.5.2 Connector Shielding Requirements 107

4.5.3 Connector ESD Protection Requirements 107

4.5.4 Connector Signal Integrity Requirements 108

4.5.5 Lightning (C48) Cable Accessory Testing Requirements 108

4.6 Test Procedures 108

4.6.1 All Accessories 108

4.6.2 Cable Accessories 110

4.6.3 Mixed 30pin/Lightning Connector Accessories 118

4.6.4 Dongle Accessories 118

4.6.5 iPhone and iPod touch Docks 119

4.6.6 iPad Docks 121

4.6.7 iPod nano Docks 121

5. Apple Lightning Communication Module 123

Contents

5.1 Overview 125

5.2 Firmware Updates 125

5.3 Authentication 125

5.4 Lightning (C10E) Connector 126

5.5 Mechanical 126

5.6 Pad Layout and Assignments 128

5.7 Input/Output Electrical Characteristics 130

5.8 Cable 131

5.9 Power 132

5.9.1 Power States 132

5.9.2 Module Power 133

5.9.3 Accessory Power 133

5.9.4 Device Power 134

5.10 Audio 136

5.10.1 DAC 136

5.10.2 I2S 136

5.11 Control 137

5.11.1 S0S2 Headphone Remote Inputs 138

5.11.2 HID Headphone Remote 138

5.11.3 I2C 138

5.11.4 Serial 138

5.12 Serial Protocol 139

5.12.1 Packet Format 139

5.12.2 Initialization Packets 140

5.12.3 Configuration Packets 141

5.12.4 Operation Packets 147

5.12.5 Examples 152

5.13 Test Procedures 155

5.13.1 Connectivity 155

5.13.2 Audio Quality 155

5.13.3 Power 155

5.13.4 Charge/Sync 155

5.13.5 Firmware Update 156

6. Apple 30-pin Connector 157

6.1 Connector Versions 157

6.1.1 MidPlane Plug 157

6.1.2 MidPlane Plug with Friction Latches 157

6.1.3 MidPlane Plug with Friction Latches, Power Only 158

Contents

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