Cinterion EGS5, Hardware Interface Description

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EGS5 Hardware Interface Description
Contents
123
EGS5_HD_v02.004 Page 3 of 123 2012-02-09
Confidential / Released
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Contents
0 Document History ...................................................................................................... 9
1 Introduction ............................................................................................................... 10
1.1 Related Documents ......................................................................................... 10
1.2 Terms and Abbreviations ................................................................................. 10
1.3 Regulatory and Type Approval Information ..................................................... 14
1.3.1
Directives and Standards.................................................................... 14
1.3.2 SAR Requirements Specific to Portable Mobiles................................ 17
1.3.3 SELV Requirements ........................................................................... 17
1.3.4 Safety Precautions.............................................................................. 18
2 Product Concept ....................................................................................................... 19
2.1 Key Features at a Glance ................................................................................ 19
2.2 EGS5 System Overview .................................................................................. 22
2.3 Circuit Concept ................................................................................................ 23
3 Application Interface................................................................................................. 24
3.1 Operating Modes ............................................................................................. 25
3.2 Power Supply................................................................................................... 26
3.2.1
Minimizing Power Losses ................................................................... 26
3.2.2 Measuring the Supply Voltage VBATT+ ............................................. 27
3.2.3 Monitoring Power Supply by AT Command ........................................ 27
3.3 Power Up / Power Down Scenarios................................................................. 28
3.3.1
Turn on EGS5 ..................................................................................... 28
3.3.1.1
Turn on EGS5 Using Ignition Line IGT................................ 29
3.3.1.2 Configuring the IGT Line for Use as ON/OFF Switch ......... 32
3.3.1.3 Turn on EGS5 Using the VCHARGE Signal ....................... 32
3.3.1.4 Reset EGS5 via AT+CFUN Command................................ 33
3.3.1.5 Reset or Turn off EGS5 in Case of Emergency .................. 33
3.3.1.6 Using EMERG_OFF Signal to Reset Application(s) or
External Device(s)............................................................... 33
3.3.2 Signal States after Startup .................................................................. 34
3.3.3 Turn off EGS5 ..................................................................................... 36
3.3.3.1
Turn off EGS5 Using AT Command .................................... 36
3.3.3.2 Turn on/off EGS5 Applications with Integrated USB ........... 37
3.3.4 Automatic Shutdown ........................................................................... 38
3.3.4.1
Thermal Shutdown .............................................................. 38
3.3.4.2 Deferred Shutdown at Extreme Temperature Conditions.... 39
3.3.4.3 Undervoltage Shutdown ...................................................... 40
3.3.4.4 Overvoltage Shutdown ........................................................ 40
3.4 Automatic GPRS Multislot Class Change ........................................................ 41
3.5 Charging Control.............................................................................................. 42
3.5.1
Hardware Requirements ..................................................................... 42
3.5.2 Software Requirements ...................................................................... 42