manuais Apple MC572X/A

Apple MC572X/A Especificações (114 páginas)

Marca: Apple | Categoria: TVs portáteis | Tamanho: 1.10 MB |

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Hardware Integration Guide

1

Trademarks AirCard

4

Contact

4

Information

4

Revision

5

Contents

7

1: Introduction

11

The Universal Development Kit

12

Required connectors

12

Guide organization

12

Related documents

13

Introduction

15

2: Power Interface

17

Module power states

18

Disconnected state

19

Off state

19

Normal state

19

Low power state

19

State change: Power off/on

21

Inrush currents

24

Timing requirements

25

Current consumption

26

Current consumption overview

27

100–200 mA less

32

SED (Smart Error Detection)

35

Usage models

36

3: RF Integration

37

RF connection

39

Ground connection

40

Interference and sensitivity

41

Device-generated RF

42

Path loss calculation

44

Sensitivity vs. frequency

45

4: Audio Interface

47

System block diagrams

48

MC5728V system block

49

MC8795V system block

50

Modes of operation

51

Sidetone support

51

Gain distribution

52

Echo cancellation support

52

Audio signal interface

53

Audio function partitioning

54

5: Host/Module Interfaces

55

USB interface

56

USB handshaking

57

LED output

58

USIM interface

59

USIM card connector

60

USIM operation

61

Extended AT commands

62

Host/Module Interfaces

63

6: Thermal Considerations

65

Figure 6-1: Shield locations

66

7: Design Checklist

67

8: Testing

69

Certification testing

70

Production testing

71

Suggested production tests

72

882.60 948.60 1961.2 2141.2

81

Testing GPS Receiver—MC8775V

83

(codec gains) - 2 dB

85

Quality assurance testing

86

Suggested testing equipment

87

A: Antenna Specification

91

Frequency bands

92

Antenna design

93

Performance goals

94

 across

95

Radiated efficiency

96

Antenna-to-antenna isolation

96

180 in azimuth

97

B: Regulatory Information

99

North American users

100

EU regulatory conformity

101

Brazil ANATEL homologation

102

MDL_RESET_N — Module reset

103

W_Disable# — Wireless disable

104

D: Acronyms and Definitions

105

Numerics

107

Document SubTitle

108

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