Siemens MC55 manuali

Siemens MC55 Specifiche (108 pagine)

Marchio: Siemens | Categoria: Processori | Dimensione: 1.62 MB |

Inglese

Indice

Hardware Interface Descri

1

Contents

3

Figures

5

0 Document history

7

Chapter What is new

10

1 Introduction

11

1.2 Terms and abbreviations

12

1.3 Type approval

15

Requirements of quality

16

1.4 Safety precautions

17

2 Product concept

19

2.2 Circuit concept

23

3 Application Interface

24

3.1 Operating modes

25

3.2 Power supply

27

3.3.1 Turn on MC55/56

29

3.3.2 Turn off MC55/56

34

Controlled by MC55/56

35

3.3.3 Automatic shutdown

36

3.3.3.5 Overvoltage shutdown

38

3.5 Charging control

40

Figure 9: Charging process

43

3.5.4 Charger requirements

45

3.6 Power saving

46

AT interface disabled

48

AT interface enabled

48

Paging message

48

3.8 RTC backup

52

GSM module

53

Application

53

3.10 Audio interfaces

56

3.10.1 Microphone circuit

57

3.10.2 Speech processing

58

3.10.3 DAI timing

58

T = 100ns to 5,000 ns

59

3.11 SIM interface

60

Molex card holder

62

3.12 Control signals

63

3.12.1 Inputs

63

Transmit burst

64

1 Tx 577 µs every 4.616 ms

64

2 Tx 1154 µs every 4.616 ms

64

SYNC signal

64

4 Antenna interface

68

Antenna or

69

4.1.1 Antenna pad

70

5.2 Operating temperatures

76

5.3 Storage conditions

77

5.6 Power supply ratings

84

Average Current GSM900 (V

85

Average Current DCS1800 (V

86

Average Current PCS1900 (V

86

Burst Current GSM900 (V

87

Burst Current DCS1800 (V

87

BATT+ nom

88

5.7.4 Voiceband receive path

93

5.8 Air interface

95

5.9 Electrostatic discharge

96

6 Mechanics

97

6.3 Board-to-board connector

100

6.3.2 Adapter cabling

101

7 Reference Approval

102

8 Design example

105

Confidential / Released

106

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