Cinterion MC55i, Описание аппаратного интерфейса

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MC55i Terminal Hardware Interface Description
Contents
47
MC55i_Terminal_HD_v01.201a Page 3 of 47 2010-04-16
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Contents
0 Document History ...................................................................................................... 7
1 Introduction ................................................................................................................. 8
1.1 Related Documents ........................................................................................... 8
1.2 Terms and Abbreviations ................................................................................... 9
1.3 Regulatory and Type Approval Information ..................................................... 11
1.3.1
Directives and Standards .................................................................... 11
1.3.2 Safety Precautions.............................................................................. 14
2 Product Concept ....................................................................................................... 16
2.1 Key Features at a Glance ................................................................................ 16
3 Interface Description ................................................................................................ 18
3.1 Overview .......................................................................................................... 18
3.2 Block Diagram.................................................................................................. 19
3.3 Operating Modes ............................................................................................. 20
3.4 Terminal Circuit ................................................................................................ 21
3.5 Power Supply................................................................................................... 22
3.5.1
Turn MC55i Terminal on ..................................................................... 23
3.5.2 Reset MC55i Terminal ........................................................................ 23
3.5.3 Turn MC55i Terminal off ..................................................................... 23
3.5.4 Disconnecting power supply ............................................................... 24
3.5.5 Automatic thermal shutdown............................................................... 24
3.5.6 RTC..................................................................................................... 24
3.6 RS-232 Interface .............................................................................................. 25
3.7 Audio Interface................................................................................................. 26
3.7.1
Supported Audio Modes ..................................................................... 27
3.7.2 Speech processing ............................................................................. 28
3.8 SIM Interface.................................................................................................... 29
3.9 Status LED....................................................................................................... 30
3.10 Antenna Interface............................................................................................. 31
4 Electrical and Environmental Characteristics........................................................ 33
4.1 Absolute Maximum Ratings ............................................................................. 33
4.2 Operating Temperatures .................................................................................. 34
4.3 Storage Conditions .......................................................................................... 35
4.4 Electrical Specifications of the Application Interface........................................ 36
4.4.1
On/Off Control ..................................................................................... 36
4.4.2 RS-232 Interface ................................................................................. 37
4.4.3 Audio Interface .................................................................................... 38
4.5 Electrical Characteristics of the Voiceband Part .............................................. 39
4.6 Power Supply Ratings...................................................................................... 40
4.7 Antenna Interface............................................................................................. 41