Telit Communications S p A GE865C User Manual
GE865 Hardware User Guide
1vv0300799 Rev.11 13-07-2010
PRODUCT
GE865
GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
APPLICABILITY TABLE
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GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
DISCLAIMER
The information contained in this document is the proprietary information of Telit
Communications S.p.A. and
any disclosure to persons other than the officers, employees, agents or subcontractors
of the owner or licensee of this document, without the prior written consent of Telit, is
strictly prohibited.
Telit makes every effort to ensure the quality of the information it makes available.
Notwithstanding the foregoing, Telit does not make any warranty as to the information
contained herein, and does not accept any liability for any injury, loss or damage of any
kind incurred by use of or reliance upon the information.
Telit disclaims any and all responsibility for the application of the devices characterized
in this document, and notes that the application of the device must comply with the
safety standards of the applicable country, and where applicable, with the relevant
wiring rules.
Telit reserves the right to make modifications, additions and deletions to this document
due to typographical errors, inaccurate information, or improvements to programs
and/or equipment at any time and without notice. Such changes will, nevertheless be
incorporated into new editions of this application note.
All rights reserved.
© 2009, 2010 Telit Communications S.p.A.
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GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
Contents
APPLICABILITY TABLE ....................................................................................................................................................... 2
1 INTRODUCTION ...................................................................................................................................................... 6
1.1 SCOPE .............................................................................................................................................................................. 6
1.2 AUDIENCE ......................................................................................................................................................................... 6
1.3 CONTACT INFORMATION, SUPPORT .................................................................................................................................... 6
1.4 DOCUMENT ORGANIZATION ................................................................................................................................................ 7
1.5 TEXT CONVENTIONS........................................................................................................................................................... 8
1.6 RELATED DOCUMENTS ...................................................................................................................................................... 8
1.7 DOCUMENT HISTORY ......................................................................................................................................................... 9
2 OVERVIEW ............................................................................................................................................................. 10
3 GE865 MECHANICAL DIMENSIONS .................................................................................................................. 12
4 GE865 MODULE CONNECTIONS ........................................................................................................................ 13
4.1 PIN-OUT ....................................................................................................................................................................... 13
4.1.1 BGA Balls Layout
5 HARDWARE COMMANDS .................................................................................................................................... 17
5.1 TURNING ON THE GE865 ................................................................................................................................................ 17
5.2 TURNING OFF THE GE865 .............................................................................................................................................. 22
5.3 RESETTING THE GE865 ................................................................................................................................................... 25
5.3.1 Hardware Unconditional restart
6 POWER SUPPLY ................................................................................................................................................... 28
6.1 POWER SUPPLY REQUIREMENTS ...................................................................................................................................... 28
6.2 POWER CONSUMPTION .................................................................................................................................................... 29
6.3 GENERAL DESIGN RULES ................................................................................................................................................ 30
6.3.1 Electrical Design Guidelines
6.3.2 Thermal Design Guidelines
6.3.3 Power Supply PCB layout Guidelines
7 ANTENNA .............................................................................................................................................................. 37
7.1 GSM ANTENNA REQUIREMENTS ...................................................................................................................................... 37
7.2 GSM ANTENNA - PCB LINE GUIDELINES ......................................................................................................................... 38
7.3 GSM ANTENNA - INSTALLATION GUIDELINES ................................................................................................................... 39
................................................................................................................................................. 16
....................................................................................................................... 25
.............................................................................................................................. 30
............................................................................................................................... 34
............................................................................................................... 36
8 LOGIC LEVEL SPECIFICATIONS ......................................................................................................................... 40
8.1 RESET SIGNAL ................................................................................................................................................................. 41
9 SERIAL PORTS ..................................................................................................................................................... 42
9.1 MODEM SERIAL PORT ................................................................................................................................................ 42
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GE865 Hardware User Guide
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9.2 RS232 LEVEL TRANSLATION ............................................................................................................................................ 44
9.3 5V UART LEVEL TRANSLATION ........................................................................................................................................ 48
10 AUDIO SECTION OVERVIEW ........................................................................................................................... 50
10.1 ELECTRICAL CHARACTERISTICS ..................................................................................................................................... 51
10.1.1 Input Lines
10.1.2 Output Lines
11 GENERAL PURPOSE I/O ................................................................................................................................. 53
11.1 GPIO LOGIC LEVELS ...................................................................................................................................................... 54
11.2 USING A GPIO PAD AS INPUT ...................................................................................................................................... 56
11.3 USING A GPIO PAD AS OUTPUT ................................................................................................................................... 56
11.4 USING THE RF TRANSMISSION CONTROL GPIO4 ............................................................................................................ 56
11.5 USING THE RFTXMON OUTPUT GPIO5 ........................................................................................................................ 57
11.6 USING THE ALARM OUTPUT GPIO6 ................................................................................................................................ 57
11.7 USING THE BUZZER OUTPUT GPIO7 .............................................................................................................................. 58
11.8 MAGNETIC BUZZER CONCEPTS ...................................................................................................................................... 59
11.8.1 Short Description
11.8.2 Frequency Behaviour
11.8.3 Power Supply Influence
11.8.4 Working Current Influence
11.9 INDICATION OF NETWORK SERVICE AVAILABILITY ............................................................................................................. 61
11.10 RTC BYPASS OUT ........................................................................................................................................................ 63
11.11 EXTERNAL SIM HOLDER IMPLEMENTATION .................................................................................................................. 63
......................................................................................................................................................... 51
....................................................................................................................................................... 52
.............................................................................................................................................. 59
........................................................................................................................................ 59
................................................................................................................................... 60
.............................................................................................................................. 60
12 DAC AND ADC SECTION ................................................................................................................................. 64
12.1 DAC CONVERTER .......................................................................................................................................................... 64
12.1.1 Description
12.1.2 Enabling DAC
12.1.3 Low Pass Filter Example
12.2 ADC CONVERTER .......................................................................................................................................................... 66
12.2.1 Description
12.2.2 Using ADC Converter
13 MOUNTING THE GE865 ON YOUR BOARD .................................................................................................... 67
13.1 GENERAL ...................................................................................................................................................................... 67
13.2 MODULE FINISHING & DIMENSIONS ................................................................................................................................ 67
13.3 RECOMMENDED FOOT PRINT FOR THE APPLICATION ........................................................................................................ 68
13.4 DEBUG OF THE GE865 IN PRODUCTION .......................................................................................................................... 69
13.5 STENCIL ........................................................................................................................................................................ 69
13.6 PCB PAD DESIGN .......................................................................................................................................................... 70
13.7 SOLDER PASTE .............................................................................................................................................................. 72
13.7.1 GE865 Solder reflow
14 PACKING SYSTEM ........................................................................................................................................... 76
14.1 MOISTURE SENSIBILITY .................................................................................................................................................. 77
15 CONFORMITY ASSESSMENT ISSUES............................................................................................................ 78
......................................................................................................................................................... 64
..................................................................................................................................................... 65
................................................................................................................................. 65
......................................................................................................................................................... 66
........................................................................................................................................ 66
......................................................................................................................................... 73
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GE865 Hardware User Guide
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16 SAFETY RECOMMANDATIONS ....................................................................................................................... 80
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1 Introduction
1.1 Scope
The aim of this document is the description of some hardware solutions useful for
developing a product with the Telit GE865 module.
1.2 Audience
GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
This document is intended for Telit customers, who are integrators, about to implement
their applications using our GE865 modules.
1.3 Contact Information, Support
For general contact, technical support, to report documentation errors and to order
TS-EMEA@telit.com
TS-NORTHAMERICA@telit.com
TS-LATINAMERICA@telit.com
TS-APAC@telit.com
Alternatively, use:
http://www.telit.com/en/products/technical-support-center/contact.php
For detailed information about where you can buy the Telit modules or for
recommendations on accessories and components visit:
http://www.telit.com
To register for product news and announcements or for product questions contact
Our aim is to make this guide as helpful as possible. Keep us informed of your
comments and suggestions for improvements.
Telit appreciates feedback from the users of our information.
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1.4 Document Organization
This document contains the following chapters:
provides a scope for this document, target audience, contact
and support information, and text conventions.
provides an overview of the document.
Chapter 4 Module Connections out configuration and layout.
Power supply requirements and general design rules.
The antenna connection and board layout design are the most
important parts in the full product design.
logic levels for this module.
The serial port on the Telit GE865 is the core of the interface
between the module and OEM hardware
of the GE865 Telit Modules.
configured.
E865 Recommendations and
GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
How to operate on the module via hardware.
Specific values adopted in the implementation of
Refers to the audio blocks of the Base Band Chip
How the general purpose I/O pads can be
Deals with these two kind of converters.
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1.5 Text Conventions
Danger This information MUST be followed or catastrophic equipment failure or
bodily injury may occur.
Caution or Warning Alerts the user to important points about integrating the
module, if these points are not followed, the module and end user equipment may
fail or malfunction.
Tip or Information Provides advice and suggestions that may be useful when
integrating the module.
All dates are in ISO 8601 format, i.e. YYYY-MM-DD.
GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
1.6 Related Documents
Telit's GSM/GPRS Family Software User Guide, 1vv0300784
Audio settings application note , 80000NT10007a
Digital Voice Interface Application Note, 80000NT10004a
GE865 Product description,
SIM Holder Design Guides, 80000NT10001a
AT Commands Reference Guide, 80000ST10025a
Telit EVK2 User Guide, 1vv0300704
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RReevviissiioonn
DDaattee
CChhaannggeess
ISSUE#0
2009-01-26
First ISSUE# 0 - DRAFT
ISSUE#1
2009-02-15
Updated current consumptions table
ISSUE#2
2009-02-15
Updated Pinout description
ISSUE#3
2009-03-18
Updated mechanical dimensions (balls spacing),
charger description removed,
Added better explanation of pin H5 (RF) and H1 (service)
ISSUE#4
2009-04-02
Updated VBATT supply Range, DAC schematic, Conformity assessment
ISSUE#5
03/06/2009
Updated section 13 (FCC Conformity assessment)
ISSUE#6
04/06/2009
Updated section 13 (FCC Conformity assessment)
ISSUE#7
2009-05-26
Applied new layout + minor editing
Edited PCB pad design par.13.1.6
ISSUE#8
2009-06-18
Updated all schematic drawings
Updated Chapter 10 Audio Section
Substituted GE865-QUAD with GE865
Corrected GE864-QUAD/PY with GE865
Updated Overview section
ISSUE#9
2009-07-27
Changed par. 5.1 Turning ON and par. 6.1 Power supply Requirements
Changed par. 13.3 and par.15 Conformity Assessment Issues
ISSUE#10
2009-09-22
Added DVI pins description
Updated table of power consumptions.
Added note on chapters 5.1, 5.2, 9.3
Corrected chapter 1.1
ISSUE#11
2010-07-12
Updated logic levels specification
Added NOTE on ON_OFF procedure, serial port , GPIO section
Corrected note on RESET section
Updated Current Consumptions
Updated flow charts for ON OFF and Reset
Updated name for Auxiliary UART port
Updated Chapter 7
1.7 Document History
GE865 Hardware User Guide
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GE865-QUAD
2 Overview
The aim of this document is the description of some hardware solutions useful for
developing a product with the Telit GE865 module.
In this document all the basic functions of a mobile phone will be taken into account;
for each one of them a proper hardware solution will be suggested and eventually the
wrong solutions and common errors to be avoided will be evidenced. Obviously this
document cannot embrace the whole hardware solutions and products that may be
designed. The wrong solutions to be avoided shall be considered as mandatory, while
the suggested hardware configurations shall not be considered mandatory, instead the
information given shall be used as a guide and a starting point for properly developing
your product with the Telit GE865 module. For further hardware details that may not be
explained in this document refer to the Telit GE865 Product Description document
where all the hardware information is reported.
NOTICE:
(EN) The integration of the GSM/GPRS GE865 cellular module within user application
shall be done according to the design rules described in this manual.
(DE) Die Integration des GE865 GSM/GPRS Mobilfunk-Moduls in ein Gerät muß gemäß
der in diesem Dokument beschriebenen Kunstruktionsregeln erfolgen.
(SL) Integracija GSM/GPRS GE865 modula v u
projektna navodila, opisana v tem piročniku.
(SP) La utilización del modulo GSM/GPRS GE865 debe ser conforme a los usos para los
cuales ha sido deseñado descritos en este manual del usuario.
(HE)
GE865 Hardware User Guide
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GE865
u module cellulaire GSM/GPRS GE865
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GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
The information presented in this document is believed to be accurate and reliable.
However, no responsibility is assumed by Telit Communications S.p.A. for its use, nor
any infringement of patents or other rights of third parties which may result from its
use. No license is granted by implication or otherwise under any patent rights of Telit
Communications S.p.A. other than for circuitry embodied in Telit products. This
document is subject to change without notice.
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GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
3 GE865 Mechanical Dimensions
The GE865 overall dimensions are:
Length: 22 mm
Width: 22 mm
Thickness: 3.0 mm
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Ball
Signal
I/O
Function
Note
Type
Audio
E8
EAR-
AO
Earphone signal output, phase -
Audio
D8
EAR+
AO
Earphone signal output, phase +
Audio
B8
MIC+
AI
Mic.signal input; phase+
Audio
C8
MIC-
AI
Mic.signal input; phase-
Audio
SIM card interface
A5
SIMCLK
O
External SIM signal Clock
1,8 / 3V
A8
SIMRST
O
External SIM signal Reset
1,8 / 3V
A6
SIMIO
I/O
External SIM signal Data I/O
4.7K Pull up
1,8 / 3V
B7
SIMIN
I
External SIM signal Presence (active low)
1,8 / 3V
A7
SIMVCC
-
External SIM signal Power supply for the SIM
1,8 / 3V
Trace
D1
TX_AUX
O
Auxiliary UART (TX Data to DTE)
CMOS 2.8V
E1
RX_AUX
I
Auxiliary UART (RX Data from DTE)
CMOS 2.8V
Prog. / Data + HW Flow Control
A3
C103/TXD
I
Serial data input (TXD) from DTE
CMOS 2.8V
A4
C104/RXD
O
Serial data output to DTE
CMOS 2.8V
B3
C108/DTR
I
Input for Data terminal ready signal (DTR)
from DTE
CMOS 2.8V
A1
C105/RTS
I
Input for Request to send signal (RTS) from
DTE
CMOS 2.8V
A2
C106/CTS
O
Output for Clear to send signal (CTS) to DTE
CMOS 2.8V
B5
C109/DCD
O
Output for Data carrier detect signal (DCD) to
DTE
CMOS 2.8V
B2
C107/DSR
O
Output for Data set ready signal (DSR) to DTE
CMOS 2.8V
B4
C125/RING
O
Output for Ring indicator signal (RI) to DTE
CMOS 2.8V
DAC and ADC
G7
DAC_OUT
AO
Digital/Analog converter output
D/A
F5
ADC_IN1
AI
Analog/Digital converter input
A/D
F6
ADC_IN2
AI
Analog/Digital converter input
A/D
Miscellaneous Functions
C1
RESET* I Reset input
H2
VRTC
AO
VRTC Backup capacitor
Power
G8
STAT_LED O Status indicator led
CMOS 1.8V
B1
ON_OFF*
I
Input command for switching power ON or OFF
(toggle command).
47K Pull Up
Pull up to VRTC
GE865 Hardware User Guide
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4 GE865 module connections
4.1 PIN-OUT
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Ball
Signal
I/O
Function
Note
Type
E2
PWRMON O Power ON Monitor
CMOS 2.8V
H5
Antenna O Antenna output 50 Ω
RF
H1
Service
I
Service pin can be used to upgrade the
module from ASC1 as a alternative to default
upgrading procedure using ASC0
CMOS 2.8V
GPIO
D3
GPIO_01 / DVI_WA0
I/O
GPIO01 Configurable GPIO / Digital Audio
Interface (WA0)
CMOS 2.8V
D2
GPIO_02 / JDR /
DVI_RX
I/O
GPIO02 I/O pin / Jammer Detect Report /
Digital Audio Interface (RX)
CMOS 2.8V
E4
GPIO_03 / DVI_TX
I/O
GPIO03 GPIO I/O pin // Digital Audio Interface
(TX)
CMOS 2.8V
H7
GPIO_04 / TX_DISAB
I/O
GPIO04 Configurable GPIO / TX Disable input
CMOS 2.8V
G2
GPIO_05 / RFTXMON
I/O
GPIO05 Configurable GPIO / Transmitter ON
monitor
CMOS 2.8V
H8
GPIO_06 / ALARM
I/O
GPIO06 Configurable GPIO / ALARM
CMOS 2.8V
G6
GPIO_07 / BUZZER
I/O
GPIO07 Configurable GPIO / Buzzer
CMOS 2.8V
D4
GPIO_08 / DVI_CLK
I/O
GPIO08 Configurable GPIO / Digital Audio
Interface (CLK)
CMOS 2.8V
F4
GPIO_09
I/O
GPIO09
4.7 K Pull Up
Open Drain
E3
GPIO_10
I/O
GPIO10
4.7 K Pull Up
Open Drain
Power Supply
F1
VBATT
-
Main power supply (Baseband)
Power
F2
VBATT_PA
-
Main power supply (Radio PA)
Power
F3
VBATT_PA
-
Main power supply (Radio PA)
Power
G1
GND - Ground
Power
C2
GND - Ground
Power
C7
GND - Ground
Power
E5
GND - Ground
Power
E7
GND - Ground
Power
G5
GND - Ground
Power
G4
GND - Ground
Power
G3
GND - Ground
Power
H3
GND - Ground
Power
H6
GND - Ground
Power
RESERVED
B6 -
C3 -
C4 -
C5 -
C6 -
D5 -
D6 -
D7 -
E6 -
F7 -
GE865 Hardware User Guide
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Ball
Signal
I/O
Function
Note
Type
F8 -
pin
signal
F1,F2,F3
VBATT & VBATT_PA
G1, C2, C7, E5, E7, G5,
G4, G3, H3, H6
GND
B1
ON/OFF*
A3
TXD
C1
RESET*
A4
RXD
A1
RTS
D1
TXD_AUX
E1
RXD_AUX
H1
Service
GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
WARNING:
Reserved pins must not be connected.
NOTE:
If not used, almost all pins should be left disconnected. The only exceptions are the
following pins:
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RTS pin should be connected to the GND (on the module side) if flow control is not used
A B C D E F G H
1
C105 / RTS
ON_OFF
RESET*
TX_AUX
RX_AUX
VBATT
GND
SERVICE
2
C106/CTS
C107/DSR
GND
GPIO_02 /
DVI_RX
PWRMON
VBATT_PA
GPIO_05
VRTC
3
C103_TXD
C108/DTR
-
GPIO_01 /
DVI_WA0
GPIO_10
VBATT_PA
GND
GND
4
C104/RXD
C125/RING
-
GPIO_08 /
DVI_CLK
GPIO_03 /
DVI_TX
GPIO_09
GND
5
SIMCLK
C109/DCD
- - GND
ADC1
GND
ANT 6 SIMIO - - - -
ADC2
GPIO_07
GND
7
SIMVCC
SIMIN
GND - GND - DAC
GPIO_04
8
SIMRST
MIC+
MIC-
EAR+
EAR-
-
STATLED
GPIO_06
AUDIO
SIM CARD
ANTENNA
UARTS
DAC and ADC
MISCELLANEOUS
GPIO
POWER SUPPLY VBATT
POWER SUPPLY GND
RESERVED
GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
4.1.1 BGA Balls Layout
TOP VIEW
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LEGENDA:
NOTE:
The pin defined as H4 has to be considered RESERVED and not connected on any pin in
the application. The related area on the application has to be kept empty.
ON#
Power ON impulse
GND
R1R2Q1
5 Hardware Commands
5.1 Turning ON the GE865
To turn on the GE865 the pad ON# must be tied low for at least 1 second and then
released.
When the power supply voltage is lower than 3.4V the pad ON# must be tied low at least
3 seconds.
The maximum current that can be drained from the ON# pad is 0,1 mA.
A simple circuit to do it is:
GE865 Hardware User Guide
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NOTE:
Don't use any pull up resistor on the ON# line, it is internally pulled up. Using pull up
resistor may bring to latch up problems on the GE865 power regulator and improper
power on/off of the module. The line ON# must be connected only in open collector
configuration.
GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
NOTE:
In this document all the lines that are inverted, hence have active low signals are
labelled
TIP:
To check if the device has powered on, the hardware line PWRMON should be
monitored. After 900ms the line raised up the device could be considered powered on.
NOTE:
It is mandatory to avoid sending data to the serial ports during the first 200mS of the
module startup.
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GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
A flow chart showing the proper turn on procedure is displayed below:
NOTE:
In order to avoid a back powering effect it is recommended to avoid having any HIGH
logic level signal applied to the digital pins of the GE865 when the module is powered
off or during an ON/OFF transition.
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GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
A flow chart showing the AT command managing procedure is displayed below:
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GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
For example:
1- Let's assume you need to drive the ON# pad with a totem pole output of a +3/5 V
microcontroller (uP_OUT1):
2- Let's assume you need to drive the ON# pad directly with an ON/OFF button:
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GE865 Hardware User Guide
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5.2 Turning OFF the GE865
Turning off of the device can be done in two ways:
via AT command (see GE865 Software User Guide, AT#SHDN)
by tying low pin ON#
Either ways, the device issues a detach request to network informing that the device will not be
reachable any more.
To turn OFF the GE865 the pad ON# must be tied low for at least 2 seconds and then released. A Pulse
duration less than 2 seconds should also start the power off procedure, but this is not guaranteed.
The same circuitry and timing for the power on must be used.
The device shuts down after the release of the ON# pad.
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The following flow chart shows the proper turnoff procedure:
GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
TIP:
To check if the device has been powered off, the hardware line PWRMON must be
monitored. The device is powered off when PWRMON goes low.
NOTE:
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GE865 Hardware User Guide
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In order to avoid a back powering effect it is recommended to avoid having any HIGH
logic level signal applied to the digital pins of the GE865 when the module is powered
off or during an ON/OFF transition.
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