User Guide

GE9
GE9GE9
GE910 Hardware User Guide
10 Hardware User Guide10 Hardware User Guide
10 Hardware User Guide
1vv0300962 Rev.4 2012-06-25
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 5 of 73
Mod. 0805 2011-07 Rev.2
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. GE910 module connections ..........................................................................................................................................11
3.1. PIN-OUT................................................................................................................................................................11
3.2. LGA PADs Layout.................................................................................................................................................16
4. Hardware Commands...................................................................................................................................................17
4.1. Turning ON the GE910..........................................................................................................................................17
4.2. Turning OFF the GE910 ........................................................................................................................................21
4.3. HW Unconditional Shutdown on GE910...............................................................................................................23
4.3.1. Hardware Unconditional shutdown ..............................................................................................................23
5. Power Supply.................................................................................................................................................................26
5.1. Power Supply Requirements ..................................................................................................................................26
5.2. Power Consumption...............................................................................................................................................27
5.3. General Design Rules.............................................................................................................................................28
5.3.1. Electrical Design Guidelines.........................................................................................................................28
5.3.2. Thermal Design Guidelines...........................................................................................................................31
5.3.3. Power Supply PCB layout Guidelines...........................................................................................................32
6. Antenna..........................................................................................................................................................................33
6.1. GSM Antenna Requirements .................................................................................................................................33
6.2. GSM Antenna - PCB line Guidelines.....................................................................................................................34
6.3. PCB Guidelines in case of FCC certification.........................................................................................................35
6.3.1. Transmission line design ...............................................................................................................................35
6.3.2. Transmission line measurements...................................................................................................................36
6.4. GSM Antenna - Installation Guidelines .................................................................................................................38
7. Logic level specifications ..............................................................................................................................................39
7.1. Unconditional Shutdown........................................................................................................................................40
8. Serial Ports ....................................................................................................................................................................41
8.1. MODEM SERIAL PORT ......................................................................................................................................41
8.2. RS232 level translation ..........................................................................................................................................43
9. USB Port ........................................................................................................................................................................45
9.1. USB 2.0 FS ............................................................................................................................................................45
10. Audio Section Overview...........................................................................................................................................46
10.1. MIC connection......................................................................................................................................................47
10.2. LINE-IN connection...............................................................................................................................................48