Siemens AC75 manuals

Siemens AC75 Specifications (120 pages)

Brand: Siemens | Category: Networking | Size: 2.84 MB |

English

Table of contents

Hardware Interface Descri

1

Contents

3

Figures

6

0 Document History

7

1 Introduction

8

1.2 Terms and Abbreviations

9

1.3 Type Approval

12

1.4 Safety Precautions

14

2 Product Concept

16

2.2 AC75 System Overview

19

2.3 Circuit Concept

20

3 Application Interface

21

3.1 Operating Modes

22

3.2 Power Supply

24

3.3.1 Turn on AC75

26

29

Device(s)

31

Table 6: Signal states

32

3.3.3 Turn off AC75

34

3.3.4 Automatic Shutdown

37

3.3.4.6 Overvoltage Shutdown

39

3.5 Charging Control

41

3.5.1 Hardware Requirements

41

3.5.2 Software Requirements

41

3.5.5 Charger Requirements

44

3.6 Power Saving

47

AT interface disabled

48

AT interface enabled

48

3.8 RTC Backup

50

3.9 SIM Interface

51

3.9.1 Installation Advice

52

3.10 Serial Interface ASC0

53

3.11 Serial Interface ASC1

55

3.12 USB Interface

56

C Interface

59

Figure 20: I

60

3.14 SPI Interface

61

SPI MODE 0 SPI MODE 1

62

SPI MODE 2 SPI MODE 3

62

Clock phase

62

Clock polarity

62

3.15 Audio Interfaces

63

3.15.1 Speech Processing

64

3.15.2 Microphone Circuit

64

GSM module

68

3.15.4.1 Master Mode

70

3.15.4.2 Slave Mode

72

3.16 GPIO Interface

74

Transmit burst

75

1 Tx 577 µs every 4.616 ms

75

2 Tx 1154 µs every 4.616 ms

75

SYNC signal

75

3.17.4 PWR_IND Signal

77

4 Antenna Interface

78

4.1 Antenna Diagnostic

79

4.2 Antenna Connector

80

5.2 Operating Temperatures

83

5.3 Storage Conditions

84

Table 26: Signal description

87

EMRG_RST

88

I2CDAT_SPIDO I/O V

91

5.6 Power Supply Ratings

93

2Tx / 3Rx

94

5.7.4 Voiceband Receive Path

99

5.8 Air Interface

101

5.9 Electrostatic Discharge

102

6 Mechanics

103

All dimensions in mm

104

7 Sample Application

109

8 Reference Approval

111

granted to Siemens AG

112

FCC identifier QIPAC75

112

IC: 267W-AC75

112

9 Appendix

113

Spacer - Aluminum /

115

Wall thickness = 0.8mm

115

Insulating Spacer for M2

116

Self-gripping

116

External thread at both ends

116

Hexagon Nut

118

DIN 934 - ISO 4032

118

Figure 48: Lithium

119

Ion battery from

119

Figure 49: VARTA

120

PoLiFlex® Lithium

120

Polymer battery

120

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