Hardware Guide

GE865 Hardware User Guide
1vv0300799 Rev.15– 2012-04-23
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Contents
1. INTRODUCTION ........................................................................................................................................................... 7
1.1. SCOPE ....................................................................................................................................................................... 7
1.2. AUDIENCE ................................................................................................................................................................. 7
1.3. CONTACT INFORMATION, SUPPORT ........................................................................................................................... 7
1.4. DOCUMENT ORGANIZATION ..................................................................................................................................... 8
1.5. TEXT CONVENTIONS ................................................................................................................................................. 9
1.6. RELATED DOCUMENTS ............................................................................................................................................. 9
2. OVERVIEW .................................................................................................................................................................. 10
3. GE865 MECHANICAL DIMENSIONS ..................................................................................................................... 11
4. GE865 MODULE CONNECTIONS ........................................................................................................................... 12
4.1. PIN-OUT ................................................................................................................................................................ 12
4.1.1. BGA Balls Layout .......................................................................................................................................... 15
5. HARDWARE COMMANDS ....................................................................................................................................... 16
5.1. TURNING ON THE GE865 ....................................................................................................................................... 16
5.2. TURNING OFF THE GE865 ...................................................................................................................................... 20
5.3. RESETTING THE GE865 ........................................................................................................................................... 22
5.3.1. Hardware Unconditional restart ................................................................................................................... 22
6. POWER SUPPLY ......................................................................................................................................................... 25
6.1. POWER SUPPLY REQUIREMENTS ............................................................................................................................. 25
6.2. POWER CONSUMPTION ............................................................................................................................................ 26
6.2.1. Power consumption Plots .............................................................................................................................. 27
6.3. GENERAL DESIGN RULES ........................................................................................................................................ 31
6.3.1. Electrical Design Guidelines ......................................................................................................................... 31
6.3.2. Thermal Design Guidelines ........................................................................................................................... 34
6.3.3. Power Supply PCB layout Guidelines ........................................................................................................... 35
7. ANTENNA ..................................................................................................................................................................... 36
7.1. GSM ANTENNA REQUIREMENTS ............................................................................................................................ 36
7.2. GSM ANTENNA - PCB LINE GUIDELINES ................................................................................................................ 37
7.3. PCB GUIDELINES IN CASE OF FCC CERTIFICATION ................................................................................................. 38
7.3.1. Transmission line design ............................................................................................................................... 38
7.3.2. Transmission line measurements ................................................................................................................... 39
GSM ANTENNA - INSTALLATION GUIDELINES ..................................................................................................................... 41
8. LOGIC LEVEL SPECIFICATIONS .......................................................................................................................... 42
8.1. RESET SIGNAL ......................................................................................................................................................... 43
9. SERIAL PORTS ........................................................................................................................................................... 44
9.1. MODEM SERIAL PORT ....................................................................................................................................... 44
9.2. RS232 LEVEL TRANSLATION ................................................................................................................................... 46
9.3. UART BEHAVIOUR ................................................................................................................................................. 49
10. AUDIO SECTION OVERVIEW ............................................................................................................................ 50
10.1. ELECTRICAL CHARACTERISTICS ............................................................................................................................. 51