Telit Wireless Solutions GE866-QUAD Installation manual

GE866-QUAD Hardware User
Guide
1VV0301051 Rev. 2 – 2014-04-07

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APPLICABILITY TABLE
PRODUCT
GE866-QUAD

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SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Notice
While reasonable efforts have been made to assure the accuracy of this document, Telit
assumes no liability resulting from any inaccuracies or omissions in this document, or from
use of the information obtained herein. The information in this document has been carefully
checked and is believed to be entirely reliable. However, no responsibility is assumed for
inaccuracies or omissions. Telit reserves the right to make changes to any products described
herein and reserves the right to revise this document and to make changes from time to time
in content hereof with no obligation to notify any person of revisions or changes. Telit does
not assume any liability arising out of the application or use of any product, software, or
circuit described herein; neither does it convey license under its patent rights or the rights of
others.
It is possible that this publication may contain references to, or information about Telit
products (machines and programs), programming, or services that are not announced in your
country. Such references or information must not be construed to mean that Telit intends to
announce such Telit products, programming, or services in your country.
Copyrights
This instruction manual and the Telit products described in this instruction manual may be,
include or describe copyrighted Telit material, such as computer programs stored in
semiconductor memories or other media. Laws in the Italy and other countries preserve for
Telit and its licensors certain exclusive rights for copyrighted material, including the
exclusive right to copy, reproduce in any form, distribute and make derivative works of the
copyrighted material. Accordingly, any copyrighted material of Telit and its licensors
contained herein or in the Telit products described in this instruction manual may not be
copied, reproduced, distributed, merged or modified in any manner without the express
written permission of Telit. Furthermore, the purchase of Telit products shall not be deemed
to grant either directly or by implication, estoppel, or otherwise, any license under the
copyrights, patents or patent applications of Telit, as arises by operation of law in the sale of a
product.
Computer Software Copyrights
The Telit and 3rd Party supplied Software (SW) products described in this instruction manual
may include copyrighted Telit and other 3rd Party supplied computer programs stored in
semiconductor memories or other media. Laws in the Italy and other countries preserve for
Telit and other 3rd Party supplied SW certain exclusive rights for copyrighted computer
programs, including the exclusive right to copy or reproduce in any form the copyrighted
computer program. Accordingly, any copyrighted Telit or other 3rd Party supplied SW
computer programs contained in the Telit products described in this instruction manual may
not be copied (reverse engineered) or reproduced in any manner without the express written
permission of Telit or the 3rd Party SW supplier. Furthermore, the purchase of Telit products
shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any
license under the copyrights, patents or patent applications of Telit or other 3rd Party supplied
SW, except for the normal non-exclusive, royalty free license to use that arises by operation
of law in the sale of a product.

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Usage and Disclosure Restrictions
License Agreements
The software described in this document is the property of Telit and its licensors. It is
furnished by express license agreement only and may be used only in accordance with the
terms of such an agreement.
Copyrighted Materials
Software and documentation are copyrighted materials. Making unauthorized copies is
prohibited by law. No part of the software or documentation may be reproduced, transmitted,
transcribed, stored in a retrieval system, or translated into any language or computer language,
in any form or by any means, without prior written permission of Telit
High Risk Materials
Components, units, or third-party products used in the product described herein are NOT
fault-tolerant and are NOT designed, manufactured, or intended for use as on-line control
equipment in the following hazardous environments requiring fail-safe controls: the operation
of Nuclear Facilities, Aircraft Navigation or Aircraft Communication Systems, Air Traffic
Control, Life Support, or Weapons Systems (High Risk Activities"). Telit and its supplier(s)
specifically disclaim any expressed or implied warranty of fitness for such High Risk
Activities.
Trademarks
TELIT and the Stylized T Logo are registered in Trademark Office. All other product or
service names are the property of their respective owners.
Copyright © Telit Communications S.p.A. 2014

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Contents
1. Introduction ................................................. 8
1.1. Scope ..................................................... 8
1.2. Audience .................................................. 8
1.3. Contact Information, Support .............................. 8
1.4. Document Organization ..................................... 9
1.5. Text Conventions ......................................... 10
1.6. Related Documents ........................................ 10
2. Overview .................................................... 11
3. GE866-QUAD Mechanical Dimensions ............................ 12
4. GE866-QUAD module connections ............................... 13
4.1. PIN-OUT .................................................. 13
4.2. Pin Layout ............................................... 16
5. Hardware Commands ........................................... 17
5.1. Auto-Turning ON the GE866-QUAD ........................... 17
5.2. Turning OFF the GE866-QUAD ............................... 19
5.3. Resetting the GE866-QUAD ................................. 21
5.3.1. Hardware Unconditional restart ............................. 21
6. Power Supply ................................................ 24
6.1. Power Supply Requirements ................................ 24
6.2. Power Consumption ........................................ 26
6.3. General Design Rules ..................................... 27
6.3.1. Electrical Design Guidelines ............................... 27
6.3.2. Thermal Design Guidelines .................................. 30
6.3.3. Power Supply PCB layout Guidelines ......................... 32
7. Antenna ..................................................... 34
7.1. GSM Antenna Requirements ................................. 34
7.1.1. GE866-QUAD Antenna – PCB line Guidelines ................... 34
7.2. PCB Design Guidelines .................................... 37
7.2.1. Transmission line design ................................... 37
7.2.2. Transmission line measurements ............................. 38

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7.3. GSM Antenna - installation Guidelines .................... 39
8. Logic levels specifications ................................. 40
8.1. Reset signal ............................................. 41
9. Serial Ports ................................................ 43
9.1. Modem Serial Port ........................................ 43
9.2. RS232 levels translation ................................. 46
10. Audio Section Overview ...................................... 48
10.1. MIC Connection ......................................... 48
10.2. EAR Connection ......................................... 48
10.3. Electrical Characteristics ............................. 50
10.3.1. Input lines .............................................. 50
10.3.2. Output lines ............................................. 51
11. General Purpose I/O ......................................... 52
11.1. GPIO Logic Levels ...................................... 53
11.2. Using a GPIO Pad as INPUT .............................. 54
11.3. Using a GPIO Pad as OUTPUT ............................. 54
11.4. Using the RF Transmission Control GPIO4 ................ 54
11.5. Using the RFTXMON Output GPIO5 ......................... 55
11.6. Using the ALARM/BUZZER output GPIO6 .................... 55
11.7. Magnetic Buzzer Concepts ............................... 57
11.7.1. Short Description ........................................ 57
11.7.2. Frequency Behaviour ...................................... 58
11.7.3. Power Supply Influence ................................... 58
11.7.4. Working Current Influence ................................ 58
11.8. STAT LED Indication of network service availability .... 59
11.9. SIMIN detect function .................................. 60
11.10. RTC Bypass out ......................................... 60
11.11. SIM Holder Implementation .............................. 60
12. DAC and ADC section ......................................... 61
12.1. DAC Converter .......................................... 61
12.1.1. Description .............................................. 61
12.1.2. Enabling DAC ............................................. 61

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12.1.3. Low Pass Filter Example .................................. 62
12.2. ADC Converter .......................................... 62
12.2.1. Description .............................................. 62
12.2.2. Using ADC Converter ...................................... 63
13. Mounting the GE866 on your Board ............................ 64
13.1. General ................................................ 64
13.2. Module finishing & dimensions .......................... 64
13.3. Recommended foot print for the application (dimensions in
mm): 65
13.4. Stencil ................................................ 66
13.5. PCB pad design ......................................... 66
13.6. Recommendations for PCB pad dimensions (mm): ........... 67
13.7. Solder paste ........................................... 69
13.8. GE866 Solder reflow .................................... 70
14. Packing system .............................................. 72
14.1. Packing on reel ........................................ 72
14.2. Packing on tray ........................................ 73
14.3. Moisture sensibility ................................... 74
15. Conformity Assessment Issues ...................................... 75
15.1. GE866-QUAD ............................................. 77
16. Safety Recommendations ...................................... 81
17. Document History ............................................ 82

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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
GE866-QUAD module.
1.2. Audience
This document is intended for Telit customers, who are
integrators, about to implement their applications using our
GE866-QUAD modules.
1.3. Contact Information, Support
For general contact, technical support, to report
documentation errors and to order manuals, contact Telit
Technical Support Center (TTSC) at:
[email protected]
[e-mail]
[e-mail]
[email protected]
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 Telit Technical Support Center (TTSC).
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:
Chapter 1: “Introduction” provides a scope for this document,
target audience, contact and support information, and text
conventions.
Chapter 2: “Overview” provides an overview of the document.
Chapter 3: “GE866-QUAD Mechanical Dimensions”
Chapter 4: “GE866-QUAD Module Connections” deals with the pin
out configuration and layout.
Chapter 5: “Hardware Commands” How to operate on the module
via hardware.
Chapter 6: “Power supply” Power supply requirements and
general design rules.
Chapter 7: “Antenna” The antenna connection and board layout
design are the most important parts in the full product
design.
Chapter 8: “Logic Level specifications” Specific values
adopted in the implementation of logic levels for this module.
Chapter 9: “Serial ports” The serial port on the Telit GE866-
QUAD is the core of the interface between the module and OEM
hardware
Chapter 10: “Audio Section overview” Refers to the audio
blocks of the Base Band Chip of the GE866-QUAD Telit Modules.
Chapter 11: “General Purpose I/O” How the general purpose I/O
pads can be configured.
Chapter 12 “DAC and ADC Section” Deals with these two kind of
converters.
Chapter 13: “Mounting the GE866 on your Board” Recommendations
and specifics on how to mount the module on the user’s board.
Chapter 14: “Packing system” Recommendations and specifics on
how the system is packaged.
Chapter 15: “Safety Recommendations” Recommendations and
specifics on how the system is packaged.
Chapter 16: “Document History” Holds all document changes

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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.
1.6. Related Documents
•Telit GSM/GPRS Family Software User Guide, 1vv0300784
•Audio settings application note , 80000NT10007a
•Digital Voice Interface Application Note, 80000NT10004a
•GE866-QUAD Product description, 80416ST10122A
•SIM Holder Design Guides, 80000NT10001a
•AT Commands Reference Guide, 80000ST10025a
•Telit EVK2 User Guide, 1vv0300704

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2. Overview
The aim of this document is the description of some hardware
solutions useful for developing a product with the Telit
GE866-QUAD 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 all hardware solutions
and products that may be designed. Avoiding the wrong
solutions shall be considered as mandatory. While the
suggested hardware configurations shall not be considered
mandatory, the information given shall be used as a guide and
a starting point for properly developing your product with the
Telit GE866-QUAD module. For further hardware details that may
not be explained in this document refer to the Telit GE866-
QUAD Product Description document where all the hardware
information is reported.
NOTE:
The integration of the GSM/GPRS GE866-QUAD cellular module
within user application shall be done according to the design
rules described in this manual.
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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3. GE866-QUAD Mechanical Dimensions
The GE866-QUAD overall dimensions are:
•Length: 17.2 mm
•Width: 13.2 mm
•Thickness: 2.1 mm
•Weight: 1.5 g
Figure 1

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4. GE866-QUAD module connections
4.1. PIN-OUT
Pad Signal I/O Function Note Type
Audio
E7 EAR- AO
Earphone signal output, phase - Audio
D7 EAR+ AO
Earphone signal output, phase + Audio
G7 MIC- AI Mic. signal input; phase- Audio
F7 MIC+ AI Mic. signal input; phase+ Audio
F6 AGND - Analog Ground Power
SIM card interface
C7 SIMVCC - External SIM signal – Power supply for the SIM 1,8 / 3V
B7 SIMRST O External SIM signal – Reset 1,8 / 3V
A7 SIMCLK O External SIM signal – Clock 1,8 / 3V
A6 SIMIO I/O External SIM signal – Data I/O 4.7k Pull up
1,8 / 3V
X
All GPI0
can be
program
med
SIMIN I Presence SIM input CMOS 1.8V
Trace
C2 RXD_AUX I Auxiliary UART (RX Data) CMOS 1.8V
C1 TXD_AUX O Auxiliary UART (TX Data) CMOS 1.8V
Prog. / Data + HW Flow Control
B2 C109/DCD/GPO O Output for Data carrier detect signal (DCD) to DTE
/ GP output CMOS 1.8V
B3 C125/RING/GPO O Output for Ring indicator signal (RI) to DTE
/ GP output CMOS 1.8V
A3 C107/DSR/GPO O Output for Data set ready signal (DSR) to DTE
/ GP output CMOS 1.8V
A2 C108/DTR/GPI I Input for Data terminal ready signal (DTR) from DTE
/ GP input CMOS 1.8V
A1 C105/RTS/GPI I Input for Request to send signal (RTS) from DTE
/ GP input CMOS 1.8V
B1 C106/CTS/GPO O Output for Clear to send signal (CTS) to DTE
/ GP output CMOS 1.8V
A4 C103/TXD I Serial data input (TXD) from DTE CMOS 1.8V
A5 C104/RXD O Serial data output to DTE CMOS 1.8V
DAC and ADC
F4 ADC_IN AI Analog/Digital converter input A/D
E4 DAC_OUT AO
Digital/Analog converter output D/A
Miscellaneous Functions
F5 VRTC AO
VRTC Backup 2.3V Power
G4 RESET* I Reset input CMOS 1.8V

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Pad Signal I/O Function Note Type
G6 V_AUX / PWRMON O 1.8V stabilized output Imax=100mA
/ Power ON monitor Power Out 1.8V
G2 Antenna I/O Antenna pad – 50 ΩRF
GPIO
C5 GPIO_01 / DVI_WA0 I/O GPIO01 Configurable GPIO
/ Digital Audio Interface (WA0) CMOS 1.8V
C6 GPIO_02 / JDR /
DVI_RX I/O GPIO02 I/O pin
/ Jammer Detect Report
/ Digital Audio Interface (RX) CMOS 1.8V
D6 GPIO_03 / DVI_TX I/O GPIO03 GPIO I/O pin
/ Digital Audio Interface (TX) CMOS 1.8V
D5 GPIO_04 / TX Disable
/ DVI_CLK I/O GPIO04 Configurable GPIO
/ TX Disable input
/ Digital Audio Interface (CLK) CMOS 1.8V
B5 GPIO_05 / RFTXMON
I/O GPIO05 Configurable GPIO
/ Transmitter ON monitor CMOS 1.8V
B4 GPIO_06 / ALARM /
BUZZER I/O GPIO06 Configurable GPIO / ALARM CMOS 1.8V
C4 GPIO_07 / STAT_LED
I/O GPIO07 Configurable GPIO
/ Digital Audio Interface (CLK) CMOS 1.8V
Power Supply
E2 VBATT - Main power supply (Baseband) Power
E1 VBATT_PA - Main power supply (Radio PA) Power
F6 AGND - AF Signal Ground (see audio section) AF Signal
D1 GND - Ground Power
F1 GND - Ground Power
G1 GND - Ground Power
D2 GND - Ground Power
F2 GND - Ground Power
C3 GND - Ground Power
E3 GND - Ground Power
F3 GND - Ground Power
G3 GND - Ground Power
RESERVED
D3 -
D4 -
E5 -
G5 -
B6 -
E6 -
WARNING:
Reserved pins must not be connected.

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WARNING:
VAUX output must not be used to supply any device on the
customer application.
It is only provided as reference/supply voltage when voltage
translation to 1V8 CMOS is needed.
When its use is necessary, it is strongly recommended to
connect VAUX through a series resistor as closed as possible
to the module in order to reduce the inrush current of the
internal DC/DC supply. Use a low value resistor (e.g. 10 ohm,
1/3W) with a maximum power rating related to drained current.
NOTE:
If not used, almost all pins should be left disconnected. The
only exceptions are the following pins:
Pin signal
E2, E1 VBATT & VBATT_PA
D1, F1, G1, D2, F2, C2,
E3, F3, G3 GND
F6 AGND
A4 TXD
A5 RXD
A1 RTS
G6 V_AUX / PWRMON
G4 RESET*
C1 TXD_AUX
C2 RXD_AUX

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4.2. Pin Layout
TOP VIEW
A B C D E F G
1
C105/RTS C106/CTS TXD_AUX GND VABTT_PA GND GND
2
C108/DTR C109/DCD RXD_AUX GND VABTT GND ANT
3
C107/DSR C125/RING GND RESERVED GND GND GND
4
C103/TXD
GPIO_06/
ALRM/
BUZZER
GPIO_07/
STAT_LED
RESERVED DAC_OUT ADC_IN RESET*
5
C104/RXD
GPIO_05/
RFTXMON GPIO_01/ DVI_WAO
GPIO_04/
TX_DIS/
DVI_CLK RESERVED
VRTC RESERVED
6
SIMIO RESERVED GPIO_02/ JDR/
DVI_RX
GPIO_03/
DVI_TX RESERVED
AGND V_AUX/
PWRMON
7
SIMCLK SIMRST SIMVCC EAR+ EAR- MIC+ MIC-
AUDIO ANTENNA
SIM RESERVED/FU
MISCELLANOUS POWER
SERIAL GND
GPIO
NOTE:
The pins defined RESERVED must not be connected to any pin in
the application.

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5. Hardware Commands
5.1. Auto-Turning ON the GE866-QUAD
To Auto-turn on the GE866-QUAD, the power supply must be
applied on the power pins VBATT and VBATT_PA, after 1000 m-
seconds, the V_AUX / PWRMON pin will be at the high logic
level and the module can be considered fully operating.
When the power supply voltage is between 3.22V and 3.4V, after
5000 m-seconds, the V_AUX / PWRMON pin will be at the high
logic level and the module can be considered fully operating.
The following flow chart shows the proper turn on procedure:
NOTE:
Modem ON Proc.
PWR supply = ON?
Y
Delay 1s - 5s for Low
Voltage Operating
Y
Modem Reset Proc.
AT init sequence.
N
Start AT CMD.
N
PWMON = ON?
Y
PWMON = ON?
Delay 300mS
Enter AT<CR>
AT answer in
1second ?
N
Y
N
Delay 1s

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The power supply must be applied either at the same time on
pins VBATT and VBATT_PA, or first applied on VBATT_PA and then
on VBATT. The opposite sequence shall be avoided. The reverse
procedure applies for powering down the module: first
disconnect VBATT, then VBATT_PA, or both at once.
NOTE:
In order to prevent a back powering effect it is recommended
to avoid having any HIGH logic level signal applied to the
digital pins of the GE866-QUAD when the module is powered OFF
or during an ON/OFF transition.
A flow chart showing the AT commands managing procedure is
displayed below:
Modem ON Proc.
Disconnect PWR
supply
AT init sequence.
Delay 300mS
Enter AT<CR>
AT answer in
1second?
Y
N
Start AT CMD.

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5.2. Turning OFF the GE866-QUAD
Turning off of the device can be done in two ways:
•General turn OFF
•Processor turn OFF
General turn OFF – disconnect the power supply from the both
power pins VBATT and VBATT_PA at the same time. In this case
all parts of the module are in OFF condition, no power
consumption is present.
Processor turn OFF – disconnect the power supply only from the
power pin VBATT, the power pin VBATT_PA can be connected to
power supply, in this case a low, about 30uA, power
consumption is present
Before either of both OFF procedures is applied, the
AT#SYSHALT AT command must be sent (see AT Commands Reference
Guide, 80000ST10025a), after the OK response message, wait for
10 seconds, then the module can be consider fully not
operating and at this moment is possible disconnect the Power
Supply.
The following flow chart shows the proper turnoff procedure:

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WARNING:
PWRMON can be used to monitor only the power on but it cannot
be used to monitor the power off because it remains high
NOTE:
In order to prevent a back powering effect it is recommended
to avoid having any HIGH logic level signal applied to the
digital pins of the GE866-QUAD when the module is powered off
or during an ON/OFF transition.
Modem OFF
Proc.
AT#SYSHALT
Disconnect PWR
supply
10s timeout
Modem ON Proc.
Delay 1.5s