Sony Ericsson GM48 Technical Description

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Sony Ericsson GM48 Technical Description | Manualzz
GM 47/GM 48
Technical Description
CE
The product described in this manual conforms to the Radio Equipment and Telecommunication Terminal
Equipment (R&TTE) directive 99/5/EC with requirements covering EMC directive 89/336/EEC and
Low Voltage directive 73/23/EEC. The product fulfils the requirements according to 3GPP TS 51.010-1,
EN 301489-7 and EN60950.
The information contained in this document is the proprietary information of Sony Ericsson Mobile
Communications. The contents are confidential 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 Sony Ericsson Mobile Communications, is strictly prohibited.
Further, no portion of this publication may be reproduced, stored in a retrieval system, or transmitted in
any form or by any means, electronic or mechanical, including photocopying and recording, without the
prior written consent of Sony Ericsson Mobile Communications, the copyright holder.
Third edition (June 2002)
Sony Ericsson Mobile Communications. publishes this manual without making any warranty as to the
content contained herein. Further Sony Ericsson Mobile Communications. reserves the right to make
modifications, additions and deletions to this manual 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 manual.
All rights reserved.
©
Sony Ericsson Mobile Communications., 2002
Publication number:
Printed in UK
GM47/GM48 Technical description
Contents
1
INTRODUCTION ....................................................................................................................5
1.1
OVERVIEW ........................................................................................................................5
1.2
FEATURES.........................................................................................................................6
1.2.1
Type of Mobile Station .............................................................................................6
1.2.2
SMS .........................................................................................................................7
1.2.3
Voice calls ................................................................................................................7
1.2.4
Data..........................................................................................................................7
1.2.5
SIM Card ..................................................................................................................8
1.2.6
Power consumption..................................................................................................8
1.2.7
Other features ..........................................................................................................8
1.2.8
Development Kit.......................................................................................................8
1.3
PRECAUTIONS ...................................................................................................................8
1.4
ABBREVIATIONS .................................................................................................................9
2
MECHANICAL DESCRIPTION............................................................................................10
2.1
2.2
3
INTERFACE DESCRIPTION .................................................................................................10
PHYSICAL DIMENSIONS ....................................................................................................11
SYSTEM CONNECTOR INTERFACE.................................................................................12
3.1
OVERVIEW ......................................................................................................................12
3.2
GENERAL ELECTRICAL AND LOGICAL CHARACTERISTICS....................................................15
3.2.1
General Protection Requirements..........................................................................15
3.3
GROUNDS .......................................................................................................................16
3.3.1
The Analogue Ground............................................................................................16
3.3.2
The Digital Ground (DGND)...................................................................................16
3.4
REGULATED POWER SUPPLY ...........................................................................................17
3.4.1
Power Supply (VCC) ..............................................................................................17
3.5
ON/OFF AND EXTERNAL POWER SIGNALS .......................................................................17
3.5.1
Module ON/OFF.....................................................................................................17
3.5.2
External 2.75 V (VIO) .............................................................................................18
3.6
ANALOGUE AUDIO ...........................................................................................................19
3.6.1
Audio To Mobile Station (ATMS) ...........................................................................19
3.6.2
Audio From Mobile Station (AFMS) .......................................................................21
3.7
MICROPHONE SIGNALS ....................................................................................................21
3.8
SPEAKER SIGNALS ..........................................................................................................22
3.9
DIGITAL AUDIO ................................................................................................................22
3.10 SERIAL DATA ...................................................................................................................24
3.10.1 UART 1 (RS232) - RD, TD, RTS, CTS, DTR, DCD and RI ...................................25
3.10.2 Serial Data Signals - RD, TD .................................................................................25
3.10.3 Control Signals - RTS, CTS, DTR, DCD, RI ..........................................................26
3.10.4 UART 2 - TD2, RD2 ...............................................................................................28
3.10.5 UART 3 - TD3, RD3 ...............................................................................................28
3.11 SIM CARD RELATED SIGNALS ...........................................................................................29
3.11.1 SIM Detection – SIM Presence..............................................................................30
3.12 SERVICE/PROGRAMMING .................................................................................................30
3.13 BUZZER ..........................................................................................................................31
3.14 LED................................................................................................................................31
3.15 TX_ON - BURST TRANSMISSION......................................................................................32
3.16 TIMESTAMP .....................................................................................................................32
3.17 REAL TIME CLOCK ...........................................................................................................33
4
ANTENNA CONNECTOR....................................................................................................34
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GM47/GM48 Technical description
5
AT COMMAND SUMMARY .................................................................................................35
6
TECHNICAL DATA..............................................................................................................38
7
CONTACT DETAILS............................................................................................................40
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GM47/GM48 Technical description
1
Introduction
1.1
Overview
The GM47/GM48 belong to a new generation of Sony Ericsson
Mobile Communications GSM modules. This document describes the
main characteristics and functionality of the GM 47/48, two dual band
products for 900/1800 MHz and 850/1900 MHz GSM bands
respectively.
They are intended to be used in both machine-to-machine applications
and man-to-machine applications. The module serves its purpose
when there is a need for sending and receiving data (by SMS, CSD,
HSCSD, or GPRS), as well as making voice calls over the GSM
network.
GM47/GM48 are business-to-business products. It is intended to be
sold to manufacturers, system integrators, applications developersdeveloping solutions with wireless communication. The module is
intended to be integrated by the system integrator within an
application. The module and the external application will form a
system for wireless communication.
A typical system is one where a micro controller in an external
application communicates with the module over its serial interface.
The micro controller will control the module, via the supported set of
AT commands. It is assumed that the system integrators have a high
technical knowledge and the ability to integrate the module into a
system. For the GM47/GM48 modules some interesting applications
are the following:
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•
Fleet and Asset Management
•
Vending Machines
•
Security and Alarm
•
Other telemetry applications
5
GM47/GM48 Technical description
1.2
Features
The module performs a set of telecom services (TS) according to
GSM standard phase 2+, ETSI and ITU-T. The functions of the
module are implemented by issuing AT commands over the serial
interface. Supported AT commands are listed in section 5, these are
defined further in GSM 7.05/7.07 and the GM47/GM48 integrators
manual.
1.2.1 Type of Mobile Station
The GM 4X family are normal dual band type of MS with the
following characteristics.
GM 47
GSM 900
E-GSM 900
GSM 1800
Frequency Range
(MHz)
TX: 890-915
TX: 880-890
TX: 1710-1785
RX: 935-960
RX: 925-935
RX: 1805-1880
Channel spacing
200 kHz
200 kHz
Number of channels
173 Carriers *8 (TDMA)
374 Carriers *8 (TDMA)
GSM: Channels 1 to 124
DCS: Channels 512 to 885
E-GSM: Channels 975 to 1023
Modulation
GMSK
GMSK
TX Phase Accuracy
< 5º RMS Phase error (burst)
< 5º RMS Phase error (burst)
Duplex spacing
45 MHz
95 MHz
Receiver sensitivity at < - 102 dBm
antenna connector
< - 102 dBm
Transmitter output
power at antenna
connector
Class 4
Class 1
2W (33 dBm)
1W (30 dBm)
Automatic hand-over between GSM 900 and GSM 1800
GM 48
GSM 850
GSM 1900
Frequency Range (MHz)
TX: 824-849
TX: 1850-1910
RX: 869-894
RX: 1930-1990
Channel spacing
200 kHz
200 kHz
Number of channels
123 carriers *8 (TDMA)
298 Carriers *8 (TDMA)
GSM: Channels 128 to 251
PCS: Channels 512 to 810
Modulation
GMSK
GMSK
TX Phase Accuracy
< 5º RMS Phase error (burst)
< 5º RMS Phase error (burst)
Duplex spacing
45 MHz
80 MHz
Receiver sensitivity at antenna
connector
< - 102 dBm
< - 102 dBm
Transmitter output power at
antenna connector
Class 5
Class 1
0.8 W (29 dBm)
1W (30 dBm)
Automatic hand-over between GSM 850 and GSM 1900
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GM47/GM48 Technical description
1.2.2 SMS
The module supports the following SMS services:
•
•
•
•
Sending: MO, both PDU and Text mode supported.
Receiving: MT, both PDU and Text mode supported.
CBM is a service, in which a message is sent to all subscribers
located in one or more specific cell(s) in the GSM network, for
example, cell location information.
SMS STATUS REPORT according to GSM 03.40.
The maximum length of an SMS message is 160 characters when
using 7-bit encoding. For 8-bit data, the maximum length is 140
characters.
The module supports upto 6 concatenated messages to extend this
function.
1.2.3
Voice calls
The GM47/GM48 offers the capability of MO and MT voice calls, as
well as supporting emergency calls. In addition to this multiparty, call
waiting and call deflection features are available. Some of these
features are operator specific.
The module offers normal analogue input/output lines, analogue audio
input/ output lines in differential modes, and digital audio interface,
with the possibility of accessing internal points within the digital
audio lines. Moreover, the GM47/GM48 have embedded echo
canceller and noise suppresser, which provide high quality audio.
The module supports HR, FR and EFR voice coding, provided that
EFR is available in the network.
1.2.4 Data
The module supports the following data protocols:
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•
General Packet Radio Service (GPRS). The modules are Class B
Terminals, which provides simultaneous activation and attach of
GPRS and GSM services. The GM47/GM48 modules are GPRS
4+1 devices, which are capable of transmitting in one timeslot per
frame (uplink), and receiving in a maximum of four timeslots per
frame (downlink).
•
Circuit Switched Data (CSD). GM47/GM48 modules are capable
of establishing a circuit switch data link at 9.6 kbps.
•
High Speed Circuit Switched Data (HSCSD).
GM47/GM48supports HSCSD communication, with one timeslot
per frame capacity in the uplink and two timeslots per frame
capacity in the downlink (2+1).
7
GM47/GM48 Technical description
1.2.5
SIM Card
The module supports the connection of an external SIM Card with 3V
or 5 V technology, via the 60-pin system connector. The module does
not have an internal SIM holder.
1.2.6 Power consumption
Stand-by
Transmit/Operation
GSM 850 & 900 MHz
<5 mA
275 mA (2A peak)
GSM 1800 & 1900 MHz
<5 mA
250 mA (1.75A peak)
Note! The power consumption during transmission is measured at
maximum transmit power.
1.2.7 Other features
•
07.10 Multiplexing
•
GPS interoperability
•
SIM application toolkit, class 2 release 96 compliant
1.2.8 Development Kit
Sony Ericsson Mobile Communications provides the opportunity to
test the module in a limited scale, before ordering a large quantity.
With the development kit you can quickly get started with the module.
The kit includes necessary accessories (software and hardware) that
you will need for your test purposes. It also includes the following:
•
GSM module GM 47 or GM 48
•
Integrator’s Manual
The Integrator’s Manual provides you with all the information you
need to be able to integrate the module with your application.
This is available from your regional salesperson or M2M customer
support (see section 7)
1.3
Precautions
The GM47/GM48should be handled like any mobile station. In the
Integrators’ Manual you will find more information about safety and
product care. In the Technical Data chapter in this document the
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GM47/GM48 Technical description
environmental and electrical limits are specified. Never exceed these
limits to ensure the module is not damaged.
1.4
Abbreviations
Abbreviation Explanation
ATMS
Audio To Mobile Staition
AFMS
Audio From Mobile Station
CBS
Cell Broadcast Service
CBM
Cell Broadcast Messaging
CSD
Circuit Switch Data
DCE
Data Circuit Terminating Equipment
DTE
Data Terminal Equipment
DTMF
Dual Tone Multi Frequency
EFR
Enhanced Full Rate codec
EMC
Electro-Magnetic Compatibility
ETSI
European Telecommunications Standards Institute
FR
Full Rate codec
GPRS
General Packet Radio Service
GPS
Global Positioning System
GSM
Global System for Mobile Comunication
HR
Half Rate codec
HSCSD
High Speed Circuit Switched Data
ITU-T
International Telecommunication Union – Telecommunications
Standardisation Sector
ME
Mobile Equipment
MMCX
Micro Minature Coax
MO
Mobile Originated
MS
Mobile Station
MT
Mobile Terminated
PCM
Pulse Code Modulation
PDU
Protocol Data Unit
RLP
Radio Link Protocol
RF
Radio Frequency
RFU
Reserved for Future Use
RTC
Real Time Clock
SDP
Service Discovery Protocol
SMS
Short Message Service
SIM
Subscriber Identity Module
TBD
To Be Defined
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GM47/GM48 Technical description
2
Mechanical Description
2.1
Interface Description
The picture below presents the conceptual mechanical design of the
GM 47/48. The GM 47/48 are protected with AISI 304 Stainless Steel
covers suitable to fulfil the environmental and EMC requirements.
Dimensions, the position of the different connectors and mounting
holes are shown in figure 2.2.
Figure 2.1 GM 47/48, view from the underside
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GM47/GM48 Technical description
2.2
Physical Dimensions
Figure 2.2 Physical dimensions of GM 47/48
The measures are given in millimetre’s. See also chapter 6, Technical
Data.
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GM47/GM48 Technical description
3 System Connector Interface
3.1
Overview
The electrical connections to the module (except the antenna), are
made through the System Connector Interface.
The connector shall allow the following connections: board to board
and board to cable. Details of connector availability and sources are
available from customer support on request.
Figure 3.1 GM 47/48. View from the underside
The table on next page provides the pin assignment of the different
signals in the System Connector Interface as well as a short
description of them.
All signal directions are with respect to the module i.e. Direction 'O'
means data being sent by the module.
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GM47/GM48 Technical description
Pin
Signal Name
Dir
Signal Type
Description
1.
VCC
I
Supply
Power Supply
2.
DGND
-
-
Digital Ground
3.
VCC
I
Supply
Power Supply
4.
DGND
-
-
Digital Ground
5.
VCC
I
Supply
Power Supply
6.
DGND
-
-
Digital Ground
7.
VCC
I
Supply
Power Supply
8.
DGND
-
-
Digital Ground
9.
VCC
I
Supply
Power Supply
10.
DGND
-
-
Digital Ground
11.
VCC
I
Supply
Power Supply
12.
DGND
-
-
Digital Ground
13.
Reserved for future use
14.
ON/OFF
Internal pull up,
open drain
Turns the module on/off
Dig. 3/5 V
SIM card power supply
15.
SIMVCC
I
-
Former WAKE_B
Power output for SIM Card from module
16.
SIMPRESENCE I
Internal pull up,
open drain
SIM Presence
A "1" shall indicate that the SIM is missing;
a "0" that it is inserted.
17.
SIMRST
O
Dig. 3/5 V
SIM card reset
18.
SIMDATA
I/O
Dig. 3/5 V
SIM card data
19.
SIMCLK
O
Dig. 3/5 V
SIM card clock
20.
DAC
O
Analogue
Digital to Analogue converter
21.
IO1
I/O
Digital, 2.75
General purpose input/output 1
22.
IO2
I/O
Digital, 2.75
General purpose input/output 2
23.
IO3
I/O
Digital, 2.75
General purpose input/output 3
24.
IO4
I/O
Digital, 2.75
General purpose input/output 4
25.
VRTC
I
Supply 1.8 V
Voltage for real time clock
26.
ADC1
I
Analogue
Analogue to Digital converter 1
27.
ADC2
I
Analogue
Analogue to Digital converter 2
28.
ADC3
I
Analogue
Analogue to Digital converter 3
29.
SDA
I/O
2.75, internal
pullup
I C Data
30.
SCL
O
2.75, internal
pullup
I C Clock
31.
BUZZER
O
Dig. 2.75
Buzzer output from module
32.
TIMESTAMP
O
Dig. 2.75
Timestamp
2
2
Timestamp is reserved for future use,
when A-GPS is implemented in the
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13
GM47/GM48 Technical description
networks side.
33.
LED
O
Dig. 2.75
Flashing LED
34.
VIO
O
Power Out 2.75 Module powered indication.
The VIO is a 2.75 V output that could
power external devices to transmit data
towards the GSM device to a 75mA max.
35.
TX_ON
O
Dig 2.75
This output shall indicate when the GSM
module is going to transmit the burst.
36.
RI
O
Dig. 2.75
Ring Indicator
37.
DTR
I
Dig. 2.75
Data Terminal Ready
38.
DCD
O
Dig. 2.75
Data Carrier Detect
39.
RTS
I
Dig. 2.75
Request To Send
40.
CTS
O
Dig. 2.75
Clear To Send
41.
TD
I
Dig. 2.75
Transmitted Data
Data from DTE (host) to DCE (module).
[former DTMS]
42.
RD
O
Dig. 2.75
Received Data
Data from DCE (module) to DTE (host).
[former DFMS]
43.
TD3
I
Dig. 2.75
UART3 Transmission
Data from DTE (host) to DCE (module).
[former DTMS]
44.
RD3
O
Dig. 2.75
UART3 Reception
Data from DCE (module) to DTE (host).
[former DFMS]
45.
TD2
I
Dig. 2.75
UART2 Reception
Data from DTE (host) to DCE (module).
Former CTMS. Used for flashing
46.
RD2
O
Dig. 2.75
UART2 Transmission
Data from DCE (module) to DTE (host).
Former CFMS. Used for flashing
47.
PCMULD
I
Dig. 2.75
DSP PCM digital audio input
48.
PCMDLD
O
Dig. 2.75
DSP PCM digital audio output
49.
PCMO
O
Dig. 2.75
Codec PCM digital audio output
50.
PCMI
I
Dig. 2.75
Codec PCM digital audio input
51.
PCMSYNC
O
Dig. 2.75
DSP PCM frame sync
52.
PCMCLK
O
Dig. 2.75
DSP PCM clock output
53.
MICP
I
Analogue
Microphone input positive
54.
MICN
I
Analogue
Microphone input negative
55.
BEARP
O
Analogue
Speaker output positive
56.
BEARN
O
Analogue
Speaker output negative
57.
AFMS
O
Analogue
Audio output from module
58.
SERVICE
I
12V/2.7V
Flash programming voltage for the MS.
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14
GM47/GM48 Technical description
Enable logger information if no flashing
Former VPPFLASH
3.2
59.
ATMS
I
Analogue
Audio input to module
60.
AGND
-
Analogue
Analogue ground
General Electrical and Logical Characteristics
Many of the signals present in the interface are high-speed CMOS
logic inputs or outputs powered from 2.75 V ± 5 %. Whenever a
signal is defined as Dig. 2.75 V, the following electrical
characteristics shall apply.
Parameter
Min.
Typ.
Max.
Units
Output
Current Io
High Level Output Voltage (VOH)
2.2
2.75
Volts
- 2 mA
Low Level Output Voltage (VOL)
0
0.6
Volts
2 mA
High Level Input Voltage (VIH)
1.93
2.75
Volts
Low Level Input voltage (VIL)
0
0.5
Volts
3.2.1 General Protection Requirements
All 2.75V digital inputs shall continuously withstand any voltage from
-0.5V up to 3.47V (3.3V + 5%) in the power-on or power-off
condition with no damage. All 2.75V digital outputs shall
continuously withstand a short circuit to any voltage within the range
from 0V to 3V.
! Note : This is for protection ONLY, the module cannot be driven
directly by a 3.3V micro processor, if this is done it will invalidate any
warranty claim on the module.
The SIM output signals and the SIMVCC supply can continuously
withstand a short circuit to any voltage within the range from 0V to
4.1V.
BA/SEM/MS 02:0004 Rev C
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GM47/GM48 Technical description
3.3
Grounds
Pins
Name
Description
2, 4, 6, 8, 10, 12
DGND
Digital Ground
60
AGND
Analogue Ground
There are two ground signals in GM 47/48, Analogue Ground
(AGND) and Digital Ground (DGND). The analogue Ground is
connected to pin number 60, and the Digital Ground is connected to
the System Connector Interface through pin numbers 2, 4, 6, 8, 10 and
12.
Note: All the Ground pins have to be connected to the application.
The AGND is connected to the DGND in the ME, and only there. It is
important that the AGND and the DGND are separated in the
application.
3.3.1 The Analogue Ground
The AGND lead is the analogue audio reference ground. It is the
return signal for Audio To Mobile Station (ATMS) and Audio From
Mobile Station (AFMS).
It shall be connected to the Digital Ground (DGND) inside the module
and only there. The application shall not connect DGND and AGND.
Parameter
Limit
Imax
≅12.5mA
3.3.2 The Digital Ground (DGND)
DGND is the reference for all digital signals in the System Interface.
It shall also be the DC return for the power supply on VCC and
SERVICE. Each DGND pin is rated at 0.5 A. All DGND pins are
connected internally in the module.
All DGND pins should be connected commonly in the application.
Parameter
Limit
Iaverage
< 0.5 A No DGND pin can withstand over 0.5 A
Imax
< 600 mA (100 mA each)
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GM47/GM48 Technical description
3.4
Regulated Power Supply
Pins
Name
Description
1, 3, 5, 7, 9, 11
VCC
Regulated Power Supply
The regulated power supply, VCC, is connected to the pin numbers 1,
3, 5, 7, 9 and 11.
3.4.1 Power Supply (VCC)
The VCC supplies the module with external power. Any other voltage
needed is generated internally.
Parameter
Mode
Limit
Voltage to be applied
Nominal
Tolerance including ripple
Over voltages
Current Drive capability at TX Full Power
3.6 Volts
1
3.4 Volts - 4.0 Volts
5.5 Volts
< 600 mA (average))
< 2 A (Peak)
GM 47/48 have not internal capacitance to supply the large current
peaks during GSM transmission. Therefore on burst transmission the
application DC source is responsible for providing the appropriate
current.
Design application notes are available from customer support on
request.
3.5
ON/OFF and External Power Signals
Pins
Name
Dir
Description
14
ON/OFF
I
Square signal to turn on/off the module
34
VIO
O
External power supply
3.5.1 Module ON/OFF
The module is powered ON/OFF by grounding (pulling low) pin 14 as
per figure 3.2 below. The pin should then be released as it has an
internal pull up to return it to the high state.
Note: Driving with 2.75V or 3.6V is not permitted and restricts
module functionality.
1
Measured at system connector pins.
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GM47/GM48 Technical description
Parameter
Minimum
Typical
Voltage HIGH Level (FALSE)
Maximum
Units
VCC
By internal
pull up only
Voltage LOW Level (TRUE)
0
0.3*VCC
Volts
Pull-up Resistance
Internal pull up
39
KΩ
Figure 3.2ON/OFF and VIO performance
Where the times are defined as follows:
Time
Description
Min
Typ
tmr
Time to start an ON/OFF operation
1
1.5
tpwr
Time for module start-up once ON/ OFF
signal has set to TRUE
100
Max
Unit
S
200
MS
3.5.2 External 2.75 V (VIO)
The VIO has been derived from a 2.75 V regulator. It is possible to
use this output as a power supply at 2.75 V with a maximum of 75mA.
It will indicate that the module is alive and it could power external
devices. In this case, the external applications do not need to
implement a 2.75 volt regulator to adapt the incoming (from module
point of view) serial data.
Parameter
Minimum Typical Maximum Units
Output Voltage (Iload=50 mA)
2.70
Load current
BA/SEM/MS 02:0004 Rev C
2.75
2.85
Volts
75
mA
18
GM47/GM48 Technical description
3.6
Analogue Audio
Pins
Name
Dir
Description
57
AFMS
O
Audio From Mobile Station
59
ATMS
I
Audio To Mobile Station
60
AGND
-
Reference for analogue audio
ATMS and AFMS are the audio input and output for the module. The
analogue audio signals can be used in two different modes, Handsfree
and Portable Handsfree.
Handsfree
This mode is referred to as Audio To Mobile Station (ATMS) and
Audio From Mobile Station (AFMS). It is used by audio accessories
such as Handsets and Handsfree equipment.
Portable Handsfree
This mode activates a different amplification factor in the Mobile
Equipment (ME). It also activates a microphone bias level in ATMS.
This is the default mode.
3.6.1 Audio To Mobile Station (ATMS)
ATMS is the analogue audio input to the module. It connects to the
audio input of the CODEC in the module. The CODEC then converts
the analogue audio to digital audio, in PCM format, which is
connected to the internal PCM bus in the module. The internal PCM
bus connects the encoded audio to PCMO on the system connector.
ATMS is also used as the microphone input from the Portable
Handsfree. If this is the case, a DC bias is provided from the ATMS.
All sources must be AC-coupled except the Portable Handsfree
microphone, which shall be DC-coupled in order to supply DC current
to the Portable Handsfree microphone. AC coupling prevents incorrect
biasing or damage of the ATMS input. The capacitor must have a
value greater than shown below to avoid attenuation of low
frequencies.
The ATMS input is a passive network followed by the transmit part of
the CODEC.
BA/SEM/MS 02:0004 Rev C
19
GM47/GM48 Technical description
Parameter
Limit
< 300 Ω
Application driving impedance (0.3 - 3.5 kHz)
AC coupling capacitance
2
> 1 µF
Module input impedance (0.3 - 3.5 kHz)
>50ΚΩ
Low frequency cut-off (- 3 dB)
300 Hz ± 50 Hz
High frequency cut-off (- 3 dB)
> 3500 Hz
Maximum allowed input level
1.5Vpp = 530mV
Output DC bias level
Handsfree mode
0V
Portable Handsfree mode
2 V ± 0.1 V
Additional Gain in Portable Handsfree mode
28.5 dB
•
Maximum input level at ATMS 245mVrms output at PCMO =
3dBm0.
•
The following table is with nominal PGA (Programmable Gain
Settings).
•
For more information see AT commands in the integrators manual.
Input
Input Volts mVrms
TXAGC dB
AUXI1 Gain
PCMO dBm0
ATMS
245
0
13
3
Maximum input level at MICI 61.4mVrms output at PCMO = 3dBm0
Input
Input Volts mVrms
TXAGC dB
AUXI1 Gain
PCMO dBm0
MICI
61.4
0
25
3
Output at AUX02 for 3dBm0 at PCMI
Input
dBm0
RXPGA
Volume
Control dB
AUX02 mVrms
PCMI
3dBm0
0
0
436
Output at BEAR for 3dBm0 at PCMI
2
Input
dBm0
RXPGA
Volume
Control dB
BEAR mVrms
PCMI
3dBm0
0
0
388
AC coupling capacitance must be supplied by the application, unless a DC coupled microphone
is used.
BA/SEM/MS 02:0004 Rev C
20
GM47/GM48 Technical description
3.6.2 Audio From Mobile Station (AFMS)
AFMS is the analogue audio output from the module. When it is
active, the output is derived from the PCM digital audio by the
decoder part of the CODEC. The PCM data comes from PCMI on the
system connector. It is also used as an ear-piece driver for the Portable
Hands Free accessory.
Parameter
Limit
Speaker impedance
64 Ω το 1ΚΩ
AFMS Output Capacitance
2.2 µF ±10%
Levels (THD < 5 %)
Drive capability into 5 kΩ (0.3 3.5 kHz)
> 2.4 Vpp [TBC]
Drive capability into 1.5 kΩ (0.3 - > 2.2 Vpp [TBC]
3.5 kHz)
Drive capability into 150 Ω (at
1kHz)
3.7
> 1.3 Vpp [TBC]
Microphone Signals
Pin
Speaker signals
Dir
Function
53
MICP
I
Microphone Positive Input
54
MICN
I
Microphone Negative Input
MICP and MICN are the microphone-input pins. These inputs shall be
compatible with an electret microphone. The microphone contains a
FET buffer with open drain output, which must be supplied with at
least +2V relative to ground.
Figure 3.3 Microphone connection to module
CCO is the internal source voltage that will provide the necessary
drive current for the microphone (This is not provided by the module).
Parameter
CCO
BA/SEM/MS 02:0004 Rev C
Limit
2.0 - 2.5 V
21
GM47/GM48 Technical description
3.8
Speaker Signals
Pin
Speaker signals
Dir
Function
55
BEARP
O
Microphone Positive Output
56
BEARN
O
Microphone Negative Output
BEARP and BEARN are the speakers output pins. These outputs are
in differential mode.
3.9
Digital Audio
Pin
PCM signal
Dir
Function
52
PCMCLK
O
PCM clock
51
PCMSYNC
O
PCM frame sync
47
PCMULD
I
PCM audio input to DSP
48
PCMDLD
O
PCM audio output to DSP
50
PCMI
I
PCM audio input to Codec
49
PCMO
O
PCM audio output to Codec
The digital PCM audio signals allow the connection of a digital audio
source / receiver, bypassing the analogue audio CODEC processing
functions performed within the module.
Figure 3.4 Pin connections to digital audio
BA/SEM/MS 02:0004 Rev C
22
GM47/GM48 Technical description
In the case where no external audio processing is performed, then it is
necessary to connect the following signals at the system connector:
PCMDLD and PCMI
PCMULD and PCMO
Electrical characteristics
The Dig. 2.75 V CMOS Output / Input electrical characteristics shall
apply, with DGND as the reference.
PCM interface format
The PCM format (for PCMULD and PCMDLD) shall follow a linear
PCM data I/O format of an industry standard Texas Instrument DSP.
It is the same format as the one used between the CODEC and the
DSP. The DSP is the source of the bit clock PCMCLK and the frame
synchronisation PCMSYNC. The data bits in PCMULD and
PCMDLD shall be aligned so that the MSB in each word occurs on
the same clock edge.
BA/SEM/MS 02:0004 Rev C
23
GM47/GM48 Technical description
3.10 Serial Data
Pin
Name
Dir
Description
RS232 CCITT
Nº
41
TD
I
Serial data to module
103
42
RD
O
Serial data from module
104
39
RTS
I
Request To Send
105
40
CTS
O
Clear To Send
106
37
DTR
I
Data Terminal Ready
108.2
38
DCD
O
Data Carrier Detect
109
36
RI
O
Ring Indicator
125
45
TD2
I
UART 2 Data Transmission
46
RD2
O
UART 2 Data Reception
43
TD3
O
UART 3 Data Transmission
44
RD3
I
UART 3 Data Reception
The serial channels are used as asynchronous communication links
between an application system or accessory units connected to the
Module. They consist of three UART's.
•
•
•
UART 1 – This has full RS232 functionality except for the DSR
signal and is used for all on and off line communication.
UART 2 – Used for interfacing to a GPS unit, downloading
software and receiving logging information.
UART 3 – RFU
The Dig. 2.75 V CMOS Output / Input electrical characteristics shall
apply, with DGND as the reference. Extra relevant data is specified
for some of the signals.
The character format supported is, 1 start bit, 8 bit data, non-parity
plus 1 stop bit, in total 10 bits per character.
Note : As stated in section 3.2.1 the module is unable to directly
interface to a 3.3V micro processor.
BA/SEM/MS 02:0004 Rev C
24
GM47/GM48 Technical description
3.10.1 UART 1 (RS232) - RD, TD, RTS, CTS, DTR, DCD and RI
The UART1 signals form a 9 pin RS-232 (V.24) serial port, apart
from the DSR (CCITT Nº 107) signal. DSR signal has been removed
as it is usually connected to DTR in most systems.
The signal levels do not match the standard RS-232 (V.28) levels. The
relationship between the levels is shown in the table below
RS - 232 Level
RD, TD
RTS, CTS, DTR, DCD, RI
2.75 V CMOS Level
<-3V
1
OFF
> 1.93
>+3V
0
ON
< 0.80 V
Conversion between the 2.75V CMOS levels and the RS232 levels
can be achieved using a standard interface IC, such as the Maxim
Integrated Products MAX3237.
3.10.2 Serial Data Signals - RD, TD
The default baud rate is 9.6 kbit/s, however higher bit rates up to 460
kbit/s are supported and are set by the AT+IPR command. The UART
1 starts at a rate of 9.6 kbit/s in standard AT mode or binary mode
(First received data AT or binary will determine the operation mode).
The GSM 07.10 multiplexing protocol is supported and is started on
command, in this case bit rates up to 460 kbits/s are supported.
Serial Data From Module (RD)
RD is an output used to send data on the UART 1 to the application
system. This is a Dig. 2.75 CMOS Output and general characteristics
are applicable.
Parameter
Limit
Application load resistance
< 100 kΩ
Application load capacitance
< 500 pF
Serial Data To Module (TD)
TD is input (to the module) used by the application system to send
data on the UART 1 to the module. This is a Dig. 2.75 CMOS Input
and general characteristics are applicable.
Parameter
Limit
Application driving impedance
< 100 Ω
Input capacitance
1 nF
Input resistance (pull-up)
100 kΩ to 2.75 V
BA/SEM/MS 02:0004 Rev C
25
GM47/GM48 Technical description
3.10.3 Control Signals - RTS, CTS, DTR, DCD, RI
The control signals are active low, and hence when a standard
interface IC is used (such as MAX3237), then standard RS-232 levels
are obtained.
These signals together with DGND, RD and TD form a 9-pin RS-232
data port (with the exception of the voltage levels and DSR).
RTS and CTS shall be capable of transmitting at 1/10 of the data
transmission speed for data rates, up to 460 kbit/s. (Byte oriented flow
control mechanism).
Switching times for RTS and CTS
Parameter
Limit
Time from Low to High level
< 2 µs
Time from High to Low level
< 2 µs
Request to Send (RTS)
RTS is an input to the module. The signals on this circuit are used to
condition the DCE (the module when used for data transmission
purposes) for data transmission. Default level is OFF, by internal pull
up.
The exact behaviour of RTS is defined by the AT+IFC command.
Software or hardware flow control can be selected. Hardware flow
control is the default.
This is a Dig. 2.75 CMOS Input and general characteristics are
applicable.
It is the duty of the application to pull RTS low (logic levels) to
request communications with the module. The module will respond by
asserting CTS low and as such may be used as a notification as a
module status ready for communication.
Parameter
Limit
Application driving impedance
< 100 Ω
Input capacitance
< 2 nF
Input resistance (pull-down)
100 kΩ to DGND
BA/SEM/MS 02:0004 Rev C
26
GM47/GM48 Technical description
Clear To Send (CTS)
CTS is an output from the module. The signals on this circuit are used
to indicate that the DCE (the module when used for data transmission
purposes) is ready to transmit data. Default level is high.
The exact behaviour of CTS is defined by the AT+IFC command.
Software or hardware flow control can be selected.
This is a Dig. 2.75 CMOS Output and general characteristics are
applicable.
Tip: if only software flow control is to be used it becomes necessary
to assert RTS low or to connect RTS to CTS at the module.
Parameter
Limit
Application load capacitance
< 500 pF
Application load resistance
> 1 MΩ
Data Terminal Ready (DTR)
DTR is an input to the module. Signals from the DTE on this circuit
indicate the DTE is ready to transmit and receive data. DTR also acts
as a hardware 'hang-up' so that calls are terminated if DTR is OFF
(high).
Default level is ON (low). The exact behaviour of DTR is defined by
the AT&D command.
This is a Dig. 2.75 CMOS Input and general characteristics are
applicable.
Data Carrier Detect (DCD)
DCD is an output from the module. An ON (low) signal shall indicate
that a valid carrier (data signal) is being received by the DCE
(module). The exact behaviour of DCD is defined by the AT&C
command.
This is a Dig. 2.75 CMOS Output and general characteristics are
applicable.
Ring Indicator (RI)
RI is an output from the module. An ON (low) signal indicates a
ringing signal is being received by the DCE (module).
This is a Dig. 2.75 CMOS Output and general characteristics are
applicable.
Note: DSR is not supported and is therefore considered permanently
ready for a module, therefore any DGND connection may be taken as
DSR functionality.
BA/SEM/MS 02:0004 Rev C
27
GM47/GM48 Technical description
3.10.4 UART 2 - TD2, RD2
The UART 2 consists of a full duplex serial communication. This
involves the transmission and reception lines.
The communication port shall work in one mode: Operation and
Maintenance mode.
Operation and Maintenance mode shall work in addition with the
SERVICE signal. On switching the module on, if SERVICE signal is
active then two events can happen. If no data is sent to the module,
then the logger is activated. Otherwise, the module shall be ready to
be reprogrammed.
Timing and Electrical signal characteristics equal to UART 1 TD and
RD, except for maximum baud rate that could be increased to 921
kbps.
Transmitted Data 2 (TD2)
TD2 is input (to the module) used by the application system to send
data on the UART 2 to the module.
The electrical characteristics shall be the same as TD.
Received Data 2 (RD2)
RD2 is an output used to send data on the UART 2 to the application
system.
The electrical characteristics shall be the same as RD.
3.10.5 UART 3 - TD3, RD3
The UART 3 consists of a full duplex serial communication. This
involves the transmission and reception lines.
Timing and electrical signals characteristics equal to UART 1 TD and
RD.
Transmitted Data 3 (TD3)
TD3 is input (to the module) used by the application system to send
data on the UART 3 to the module.
The electrical characteristics shall be the same as TD.
Received Data 3 (RD3)
BA/SEM/MS 02:0004 Rev C
28
GM47/GM48 Technical description
RD is an output used to send data on the UART 3 to the application
system.
The electrical characteristics shall be the same as RD.
3.11 SIM Card related signals
Parameter
Mode
Signal
Min.
Typ.
Max.
Unit
SIM supply Voltage
3V
SIMVCC
2.7
3.0
3.3
V
4.5
5.0
5.5
V
2.1
3.0
V
3.5
5.0
V
0
0.9
V
0
1.5
V
2.7
3.0
V
4.7
5.0
V
0
0.2
V
0
0.2
V
2.4
3.0
V
4.4
5.0
V
0
0.35
V
0
0.3
V
5V
High Level Input Voltage
(VIH)
3V
SIMDAT
5V
Low Level Input Voltage
(VIL)
3V
SIMDAT
5V
High Level Output Voltage 3 V
(VOH)
SIMDAT
5V
Low Level Output Voltage
(VOL)
3V
SIMDAT
5V
High Level Output Voltage 3 V
(VOH)
SIMCLK
SIMRST
5V
Low Level Output Voltage
(VOL)
3V
SIMRST
5V
BA/SEM/MS 02:0004 Rev C
SIMCLK
29
GM47/GM48 Technical description
3.11.1 SIM Detection – SIM Presence
SIMDETECT is an input intended to be used to determine whether a
SIM card has been inserted or removed in the external SIM card
holder. It shall be normally wired to the "Card Inserted Switch" of the
external SIM card holder.
When left open an internal pull up resistor maintains the signal high
and means ‘SIM card missing’ to the module. When pulled low the
module assumes a SIM card is inserted.
SIMDETECT is a digital CMOS 2.75 input with the following
characteristics.
Parameter
Min.
Pull-up resistance (at 2.75 V)
100
Typ.
Units
kΩ
Low Level Input Voltage (SIM inserted)
High Level Input Voltage (SIM missing)
Max.
1.93
0.8
V
5
V
Note : The module has been Type Approved with SIM
presence/detection implemented, to avoid extra testing when type
approving the application this should be designed in.
3.12 Service/Programming
Pin
Signal
Description
58
SERVICE
Flash programming voltage
This input shall be used as a programming voltage for the Flash
Memory to initiate and it is also used as a signal to indicate to the
module that it should start outputting logging information.
Mode
SERVICE Voltage (V)
Min.
Typ.
Normal Operation
Service/enable programming
Absolute maximum voltage
BA/SEM/MS 02:0004 Rev C
1.9
2.75
Drive Capacity
Max.
0.8
-
3.6
> 1 mA
13.5
-
30
GM47/GM48 Technical description
3.13 Buzzer
Pin
Signal
Description
31
BUZZER
Buzzer Output from module
This is an output signal which allows the application to use preprogrammed melodies or sounds. Typical use would involve a
transistor buffer with a piezoelectric sounder.
The Dig. 2.75 V CMOS Output electrical characteristics shall apply,
with DGND as the reference.
3.14 LED
Pin
Signal
Description
33
LED
LED Output from module
This is an output signal which allows the use of an external LED. The
LED shall indicate different states within the module.
This signal is a Dig. 2.75 V CMOS output so general characteristics
are applicable. In order to connect a LED in the external application
the following scheme shall be followed.
The operation of the LED is hardcoded and is not controlled by the
host application.
Figure 3.5 Electrical connection for LED
BA/SEM/MS 02:0004 Rev C
31
GM47/GM48 Technical description
3.15 TX_ON - Burst Transmission
Pin
Signal
Dir
Description
35
TX_ON
O
GSM module on transmission
The TX_ON is a digital signal output. This shall indicate that the
module is going to transmit the burst. Burst transmission is the time
when a GSM transceiver unit.
Dig 2.75 CMOS Output so general electrical characteristics are
applicable.
3.16 Timestamp
Pin
Signal
Dir
Description
32
TIMESTAMP
O
Global Positioning System Timestamp
TIMESTAMP is a Dig. 2.75 V CMOS Output electrical
characteristics, with DGND as the reference.
Its main purpose is the A-GPS timestamp. As it is shown this is only
applicable when the Assisted GPS is implemented. In order to apply
the assisted GPS performance not only MS implementation is
necessary but network side as well.
BA/SEM/MS 02:0004 Rev C
32
GM47/GM48 Technical description
3.17 Real Time Clock
The Real Time Clock provides the module with a time-of-day
calendar with alarm and one hundred-year calendar to the main
microprocessor.
The real time clock operates with a separate power supply. Therefore,
two modes of operation shall be distinguished:
•
•
RTC Normal operation: This is when the MS is powered/Vcc
present and it does not take into account if the MS is in OFF or
ON.
RTC Backup operation: This operation is performed when the MS
is not powered, VCC = 0V. In this case the RTC operation is
maintained by the backup power supply.
The backup power supply is a passive power supply, capacitor,
golden- capacitor, battery etc., which shall be connected outside the
MS to VRTC pin. During the RTC normal operation, the passive
power supply is being charged; this is like charging a capacitor.
In backup operation, the backup source provides with enough voltage
for RTC operations. The following table shows both voltage
operations characteristics.
Parameter
Min.
Typ.
Max.
Units
Supply Voltage RTC (Normal Operation –
Charging the capacitance)
1.6
1.8
2.0
V
Supply Voltage RTC (Backup Operation –
Capacitance provides with voltage)
1.0
1.8
2.0
V
5.0
10.0
µA
Current drawn
In Back-up operation if the voltage drop below 1 Volt, the RTC shall
stop working. The following diagram shows the RTC connection:
Figure 3.6 RTC connection
BA/SEM/MS 02:0004 Rev C
33
GM47/GM48 Technical description
4 Antenna Connector
The Antenna Connector is a hub for transmission of the Radio
Frequency (RF) signals from the module to the external customersupplied antenna. It is a MMCX connector that is mounted on the
surface of the module. Most dealers should be able to supply this type
of connector.
This table provides the electrical characteristics at the antenna
interface.
Parameter
Limit
Nominal impedance
50 Ω (SWR < 2:1)
Output Power
2 Watt peak (Class 4)
Extended GSM 900
1 Watt peak (Class 1)
GSM 1800
Better than - 102 dBm
Extended GSM 900
Better than - 102 dBm
GSM 1800
Static Sensitivity
BA/SEM/MS 02:0004 Rev C
Description
34
GM47/GM48 Technical description
5 AT Command Summary
The AT standard is a line-oriented command language. "AT" is an
abbreviation of ATtention and it is always used to start sending a
command line from a TE to the TA. TE stands for Terminal
Equipment which is a computer of any size and TA stands for
Terminal Adapter which is the modem part of the module.
The command line consists of a string of alphanumeric characters. It is
sent to the modem to instruct it to perform the commands specified by
the characters.
Functionality
AT commands
CONTROL AND IDENTIFICATION
Subscriber Information
AT+CNUM, AT+CIMI, AT*ESNU
Product & Release info
AT+CGMI, AT+CGMM, AT+CGMR,
AT+CGSN, AT*ESIR
Generic information & Settings
AT, AT*, AT+CLAC, AT+GCAP, ATI,
AT+CSCS, AT&F, AT&W, ATZ, AT+WS46,
AT*E2SSN
CALL CONTROL
General call control
ATA, ATD, ATL, ATH, ATP, ATT, AT+CHUP,
AT+CMOD, AT+CVHU, AT+CR, AT+CRC,
DTMF
AT+VTS
Data commands
ATO, AT+CRLP
AUDIO CONTROL
Audio profile modification
AT*E2EAMS
Audio profile manipulation
AT*EALR, AT*EAMS, AT*EARS, AT*ELAM,
AT*EMIR, AT*EMIC, AT*EXVC, AT*E2APR
NETWORK SERVICES
Alternate Line Service (ALS)
AT*EALS, AT*ELIN, AT*ESLN
Customer Service Profile
AT*ECSP
Call forwarding
AT+CCFC, AT*EDIF
Calling/called number identification
AT+CLIP, AT+CLIR, AT*EIPS
Preferred networks
AT*EPNR, AT*EPNW
Advice of Charge
AT+CACM, AT+CAMM, AT+CAOC,
AT+CPUC
Calling cards
AT*ESCN
Call hold, waiting & multiparty
AT+CCWA, AT+CHLD
Operator selection
AT+COPS
BA/SEM/MS 02:0004 Rev C
35
GM47/GM48 Technical description
Network registration
AT+CREG
USSD
AT+CUSD, AT+CSSN
Security & Locks
AT+CLCK, AT+CPWD, AT+CPIN, AT*EPEE
SETTINGS
Restting
AT*EMAR
Ring signal settings
AT*ERIL, AT*ERIN, AT*ERIP, AT*ESIL,
AT*ESMA, AT*ESMM, AT*ESOM
ME STATUS INFORMATION
AT*ECAM, AT+CSQ, AT+CIND, AT+CPAS,
AT+CMER
ERROR CONTROL
AT+CMEE, AT+CEER
SMS & CB
Settings
AT*ESTL, AT+CPMS, AT+CRES, AT+CSAS,
AT+CSCA, AT+CSMS, AT+CNMI, AT+CSDH,
AT+CSMP, AT+CGSMS
SMS-Command
AT+CMGC
Read / write SMS
AT+CMGD, AT+CMGW, AT+CMGL,
AT+CMGR
Send SMS
AT+CMGS, AT+CMSS
PHONEBOOK
Read / write / find
AT+CPBS, AT+CPBR, AT+CPBW, AT+CPBF
Groups
AT*EGIR, AT*ESAG, AT*ESCG, AT*ESDG,
AT*ESDI, AT*ESGR
Personal Rings
AT*EPRR, AT*EPRW
Settings
AT*EPBM, AT*ESIA, AT*E2PBCS
CLOCK
Alarm
AT+CALA, AT+CALD, AT+CAPD
Time & Date
AT+CCLK, AT+CTZU, AT*EDST
INTERFACE COMMANDS
Flow control
AT&C, AT&D, AT+ICF, AT+IFC, AT+IPR
S registers
ATS0, ATS10, ATS2, ATS3, ATS4, ATS5,
ATS6, ATS7, ATS8
Response control
AT+ILRR, ATE, ATV, ATQ, AT+CSCS, ATX
07.10 MULTIPLEXING
AT+CMUX
HSCSD
AT+CHSR, AT+CHSU
BA/SEM/MS 02:0004 Rev C
36
GM47/GM48 Technical description
GPRS
PDP Context Activation
AT+CGACT
Manual PDP Context Activation
AT+CGANS
GPRS Attachment
AT+CGATT
Enter Data State
AT+CGDATA
Define PDP Context
AT+CGDCONT
GPRS Event Reporting
AT+CGEREP
Show PDP Address
AT+CGPADDR
Quality of Service Profile (MINIMUM
ACCEPTABLE)
AT+CGQMIN
Quality of Service Profile (REQUESTED)
AT+CGQREQ
GPRS Network registration Status
AT+CGREG
Extension of ATD for GPRS
ATD*
NETWORK INFORMATION
Cell information
AT*E2CD
Engineering Mode
AT*E2EMM
SIM APPLICATION TOOLKIT
Set Up Call
AT*E2STKC
Display Text
AT*E2STKD
Get Inkey
AT*E2STKG
Get Input
AT*E2STKI
Select Item
AT*E2STKL
Set Up Menu
AT*E2STKM
Envelope (Menu Selection)
AT*E2STKN
Application Toolkit Settings
AT*E2STKS
BA/SEM/MS 02:0004 Rev C
37
GM47/GM48 Technical description
6 Technical Data
Mechanical specifications
Maximum length:
50 mm
Maximum width:
33 mm
Maximum thickness:
6.82 mm (without system connector pins length)
Weight:
18,5 g
Power supply voltage, normal operation
Voltage:
3.6V Nominal
Tolerance
±0.2V
Ripple:
<100mV @ 200KHz, <20mV @>200KHz
Voltage must always stay within a normal operating range, ripple included.
Power consumption:
Speech mode < 250 mA (< 2 A peak)
Idle mode: 5 mA
Powered off: < 100 µA
RTC accuracy:
Max < 37ppm
Typical < 20ppm
Radio specifications
Frequency range:
GM 47: EGSM 900 MHz and 1800 MHz (Dual Band)
GM 48: GSM 850 MHz and 1900 MHz (Dual Band)
Maximum RF output power:
Antenna impedance:
2W/1W
50
Ω
SIM card
SIM card interface (external only)
3 V or 5 V
Environmental specifications
0
0
0
0
Operating temperature range:
-25 C to +55 C
Storage temperature range:
-40 C to +85 C
Maximum relative humidity:
95% at +40 C
Stationary vibration, sinusoidal:
Displacement: 7.5 mm Acceleration amplitude: 20 m/s
40
2
m/s Frequency range: 2-8 Hz 8-200 Hz 200-500 Hz
Stationary vibration, random
Acceleration spectral density (m /s ): 0.96 2.88 0.96
Frequency range: 5-10 10-200 200-500 60 min per/axis
Non-stationary vibration, including
shock
Shock response spectrum I, peak acceleration: - 3 shocks in
2
each axis and direction: 300 m/s , 11 ms
BA/SEM/MS 02:0004 Rev C
0
2
2
2
38
GM47/GM48 Technical description
Shock response spectrum II, peak acceleration: - 3 shocks in
2
each axis and direction: 1000 m/s , 6 ms
2
Bump:
Acceleration 250 m/s
Free fall transportation:
1.2 m
Rolling pitching transportation:
Angle: ±35 degrees, period: 8s
Static load:
10 kPa
Low air pressure/high air pressure:
70 kPa / 106 kPa
Storage
SMS Storage capacity
40 in ME
In addition the unit can handle as many SMS as the SIM can
store (SIM dependent).
Phone book capacity
100
DAC
Parameter
Value
Units
Resolution
8
bit
Output voltage swing for Code=00HEX
0.138 ± 0.1
V
Output voltage swing for Code=FFHEX
2.61 ± 0.2
V
Nominal Step Size
9.668 ± 0.1
mV
Linear Code Range
8-247 (8H-F7H)
LSB
Absolute Error during Linear Range
±100
mV
Conversion Speed
<100
µs
ADC
Parameter
Value
Units
Resolution
8
bit
Input voltage for Code=00H
0.01 ± 0.01
V
Input voltage for Code=FFH
2.75 ± 0.1
V
Nominal Step Size
10.742
mV
Accuracy
±3
LSB
Input Impedance
>1
MΩ
Conversion Time to within 0.5bit
<100
µs
BA/SEM/MS 02:0004 Rev C
39
GM47/GM48 Technical description
7 Contact details
To contact customer support please use the details below.
Customer Support
Maplewood Building
Chineham Business Park
Basingstoke
RG24 8YB
E mail :
[email protected]
Or
[email protected]
BA/SEM/MS 02:0004 Rev C
40

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