Quectel Wireless Solutions 201202M95 Users Manual

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Quectel Wireless Solutions 201202M95 Users Manual

M95

Quectel Cellular Engine

Hardware Design

M95_HD_V1.0

M95 Hardware Design

 

 

Document Title

 

M95 Hardware Design

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Revision

 

1.0

 

 

 

 

 

 

 

 

 

 

Date

 

2012-02-06

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Status

 

Released

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Document Control ID

 

M95_HD_V1.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

General Notes

Quectel offers this information as a service to its customers, to support application and engineering efforts that use the products designed by Quectel. The information provided is based upon requirements specifically provided for customers of Quectel. Quectel has not undertaken any independent search for additional information, relevant to any information that may be in the customer’s possession. Furthermore, system validation of this product designed by Quectel within a larger electronic system remains the responsibility of the customer or the customer’s system integrator. All specifications supplied herein are subject to change.

Copyright

This document contains proprietary technical information of Quectel Co., Ltd. Copying this document, distribution to others, and communication of the contents thereof, are forbidden without permission. Offenders are liable to the payment of damages. All rights are reserved in the event of a patent grant or registration of a utility model or design. All specifications supplied herein are subject to change without notice at any time.

Copyright © Shanghai Quectel Wireless Solutions Ltd. 2012

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Contents

 

Contents ............................................................................................................................................

3

Table Index .......................................................................................................................................

5

Figure Index ......................................................................................................................................

6

0. Revision history ............................................................................................................................

8

1. Introduction...................................................................................................................................

9

1.1. Related documents .............................................................................................................

9

1.2. Terms and abbreviations ..................................................................................................

10

1.3. Directives and standards ..................................................................................................

12

1.3.1. FCC Statement ......................................................................................................

12

1.3.2. FCC Radiation exposure statement .......................................................................

12

1.3.3. Industry Canada licence ........................................................................................

12

1.4. Safety cautions .................................................................................................................

13

2. Product concept...........................................................................................................................

15

2.1. Key features .....................................................................................................................

15

2.2. Functional diagram ..........................................................................................................

17

2.3. Evaluation board ..............................................................................................................

18

3. Application interface...................................................................................................................

19

3.1. Pin ....................................................................................................................................

20

3.1.1. Pin assignment ......................................................................................................

20

3.1.2. Pin description.......................................................................................................

21

3.2. Operating modes ..............................................................................................................

26

3.3. Power supply....................................................................................................................

27

3.3.1. Feature of GSM power..........................................................................................

27

3.3.2. Minimize supply voltage drop...............................................................................

27

3.3.3. Reference power design for the module................................................................

28

3.3.4. Monitor power supply ...........................................................................................

29

3.4. Power on and down scenarios ..........................................................................................

29

3.4.1. Power on ...............................................................................................................

29

3.4.2. Power down...........................................................................................................

31

3.4.3. Restart ...................................................................................................................

35

3.5. Power saving ....................................................................................................................

36

3.5.1. Minimum functionality mode................................................................................

36

3.5.2. Sleep mode ............................................................................................................

36

3.5.3. Wake up the module from SLEEP mode ..............................................................

37

3.6. Summary of state transitions ............................................................................................

37

3.7. RTC backup .....................................................................................................................

37

3.8. Serial interfaces................................................................................................................

39

3.8.1. UART Port ............................................................................................................

40

3.8.2. Debug Port ............................................................................................................

44

3.8.3. UART Application ................................................................................................

44

3.9. Audio interfaces ...............................................................................................................

48

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3.9.1. Decrease TDD noise and other noise ....................................................................

49

3.9.2. Microphone interfaces design ...............................................................................

50

3.9.3. Receiver interface design ......................................................................................

50

3.9.4. Earphone interface design .....................................................................................

51

3.9.5. Loud speaker interface design...............................................................................

51

3.9.6. Audio characteristics .............................................................................................

52

3.10. SIM card interface..........................................................................................................

52

3.10.1. SIM card application ...........................................................................................

52

3.10.2. 6 Pin SIM cassette ...............................................................................................

54

3.12. Behaviors of the RI ........................................................................................................

55

3.13. Network status indication...............................................................................................

57

3.14. Operating status indication.............................................................................................

57

4. Antenna interface ........................................................................................................................

59

4.1. RF reference design .........................................................................................................

59

4.2. RF output power...............................................................................................................

60

4.3. RF receiving sensitivity....................................................................................................

60

4.4. Operating frequencies ......................................................................................................

60

4.5. RF cable soldering ...........................................................................................................

60

5. Electrical, reliability and radio characteristics ............................................................................

62

5.1. Absolute maximum ratings ..............................................................................................

62

5.2. Operating temperature......................................................................................................

62

5.3. Power supply ratings ........................................................................................................

62

5.4. Current consumption........................................................................................................

63

5.5. Electro-static discharge ....................................................................................................

64

6. Mechanical dimensions...............................................................................................................

65

6.1. Mechanical dimensions of module...................................................................................

65

6.2. Footprint of recommendation...........................................................................................

67

6.3. Top view of the module ...................................................................................................

68

6.4. Bottom view of the module..............................................................................................

69

7. Storage and Manufacturing .........................................................................................................

70

7.1. Storage .............................................................................................................................

70

7.3. Packaging .........................................................................................................................

72

Appendix A: GPRS coding schemes...............................................................................................

73

Appendix B: GPRS multi-slot classes.............................................................................................

74

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Table Index

 

TABLE 1: RELATED DOCUMENTS ....................................................................................................

9

TABLE 2: TERMS AND ABBREVIATIONS ......................................................................................

10

TABLE 3: MODULE KEY FEATURES...............................................................................................

15

TABLE 4: CODING SCHEMES AND MAXIMUM NET DATA RATES OVER AIR INTERFACE17

TABLE 5: M95 PIN ASSIGNMENT.....................................................................................................

20

TABLE 6: PIN DESCRIPTION.............................................................................................................

21

TABLE 7: OVERVIEW OF OPERATING MODES ............................................................................

26

TABLE 8: SUMMARY OF STATE TRANSITION .............................................................................

37

TABLE 9: LOGIC LEVELS OF THE UART INTERFACE.................................................................

40

TABLE 10: PIN DEFINITION OF THE UART INTERFACES ..........................................................

40

TABLE 11: PIN DEFINITION OF AUDIO INTERFACE ...................................................................

48

TABLE 12: AOUT2 OUTPUT CHARACTERISTICS .........................................................................

49

TABLE 13: TYPICAL ELECTRET MICROPHONE CHARACTERISTICS ......................................

52

TABLE 14: TYPICAL SPEAKER CHARACTERISTICS ...................................................................

52

TABLE 15: PIN DEFINITION OF THE SIM INTERFACE ................................................................

53

TABLE 16: PIN DESCRIPTION OF AMPHENOL SIM CARD HOLDER.........................................

54

TABLE 17: BEHAVIORS OF THE RI..................................................................................................

55

TABLE 18: WORKING STATE OF THE NETLIGHT ........................................................................

57

TABLE 19: PIN DEFINITION OF THE STATUS ...............................................................................

57

TABLE 20: PIN DEFINITION OF THE ANTENNA INTERFACE ....................................................

59

TABLE 21: THE MODULE CONDUCTED RF OUTPUT POWER ...................................................

60

TABLE 22: THE MODULE CONDUCTED RF RECEIVING SENSITIVITY ...................................

60

TABLE 23: THE MODULE OPERATING FREQUENCIES ...............................................................

60

TABLE 24: ABSOLUTE MAXIMUM RATINGS................................................................................

62

TABLE 25: OPERATING TEMPERATURE........................................................................................

62

TABLE 26: THE MODULE POWER SUPPLY RATINGS .................................................................

62

TABLE 27: THE MODULE CURRENT CONSUMPTION .................................................................

63

TABLE 28: THE ESD ENDURANCE (TEMPERATURE:25 ,HUMIDITY:45 %) ..........................

64

TABLE 29: DESCRIPTION OF DIFFERENT CODING SCHEMES ..................................................

73

TABLE 30: GPRS MULTI-SLOT CLASSES .......................................................................................

74

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Figure Index

 

FIGURE 1: MODULE FUNCTIONAL DIAGRAM .............................................................................

18

FIGURE 2: PIN ASSIGNMENT ...........................................................................................................

20

FIGURE 3: RIPPLE IN SUPPLY VOLTAGE DURING TRANSMITTING BURST..........................

27

FIGURE 4: REFERENCE CIRCUIT OF THE VBAT INPUT..............................................................

28

FIGURE 5: REFERENCE CIRCUIT OF THE SOURCE POWER SUPPLY INPUT ..........................

28

FIGURE 6: TURN ON THE MODULE USING DRIVING CIRCUIT ................................................

30

FIGURE 7: TURN ON THE MODULE USING KEYSTROKE...........................................................

30

FIGURE 8: TIMING OF TURNING ON SYSTEM..............................................................................

31

FIGURE 9: TIMING OF TURNING OFF THE MODULE ..................................................................

32

FIGURE 10: REFERENCE CIRCUIT FOR EMERG_OFF BY USING DRIVING CIRCUIT............

34

FIGURE 11: REFERENCE CIRCUIT FOR EMERG_OFF BY USING BUTTON .............................

34

FIGURE 12: TIMING OF RESTARTING SYSTEM............................................................................

35

FIGURE 13: TIMING OF RESTARTING SYSTEM AFTER EMERGENCY SHUTDOWN.............

35

FIGURE 14: RTC SUPPLY FROM NON-CHARGEABLE BATTERY..............................................

38

FIGURE 15: RTC SUPPLY FROM RECHARGEABLE BATTERY...................................................

38

FIGURE 16: RTC SUPPLY FROM CAPACITOR ...............................................................................

38

FIGURE 17: SEIKO XH414H-IV01E CHARGE CHARACTERISTICS.............................................

39

FIGURE 18: CONNECTION OF ALL FUNCTIONAL UART PORT.................................................

42

FIGURE 19: CONNECTION OF THREE LINES UART PORT..........................................................

42

FIGURE 20: CONNECTION OF UART PORT ASSOCIATED HARDWARE FLOW CONTROL .. 43

FIGURE 21: CONNECTION OF SOFTWARE UPGRADE ................................................................

43

FIGURE 22: CONNECTION OF SOFTWARE DEBUG......................................................................

44

FIGURE 23: 3.3V LEVEL MATCH CIRCUIT .....................................................................................

45

FIGURE 24: 5V LEVEL MATCH CIRCUIT ........................................................................................

46

FIGURE 25: RS232 LEVEL MATCH CIRCUIT ..................................................................................

47

FIGURE 26: MICROPHONE INTERFACE DESIGN OF AIN1&AIN2..............................................

50

FIGURE 27: RECEIVER INTERFACE DESIGN OF AOUT1.............................................................

50

FIGURE 28: EARPHONE INTERFACE DESIGN ...............................................................................

51

FIGURE 29: LOUD SPEAKER INTERFACE DESIGN ......................................................................

51

FIGURE 30: REFERENCE CIRCUIT OF THE 6 PINS SIM CARD ...................................................

53

FIGURE 31: AMPHENOL C707 10M006 512 2 SIM CARD HOLDER .............................................

54

FIGURE 32: RI BEHAVIOR OF VOICE CALLING AS A RECEIVER .............................................

55

FIGURE 33: RI BEHAVIOR OF DATA CALLING AS A RECEIVER ..............................................

56

FIGURE 34: RI BEHAVIOR AS A CALLER.......................................................................................

56

FIGURE 35: RI BEHAVIOR OF URC OR SMS RECEIVED..............................................................

56

FIGURE 36: REFERENCE CIRCUIT OF THE NETLIGHT ...............................................................

57

FIGURE 37: REFERENCE CIRCUIT OF THE STATUS ....................................................................

58

FIGURE 38: REFERENCE CIRCUIT OF RF .......................................................................................

59

FIGURE 39: RF SOLDERING SAMPLE .............................................................................................

61

FIGURE 40: M95 TOP AND SIDE DIMENSIONS UNIT: MM ...................................................

65

FIGURE 41: M95 BOTTOM DIMENSIONS UNIT: MM .............................................................

66

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FIGURE 42: FOOTPRINT ONE OF RECOMMENDATION UNIT: MM ....................................

67

FIGURE 43: TOP VIEW OF THE MODULE .......................................................................................

68

FIGURE 44: BOTTOM VIEW OF THE MODULE..............................................................................

69

FIGURE 45: PASTE APPLICATION ...................................................................................................

71

FIGURE 46: RAMP-SOAK-SPIKE REFLOW PROFILE ....................................................................

72

FIGURE 47: MODULE TRAY..............................................................................................................

72

FIGURE 48: RADIO BLOCK STRUCTURE OF CS-1, CS-2 AND CS-3 ...........................................

73

FIGURE 49: RADIO BLOCK STRUCTURE OF CS-4 ........................................................................

73

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M95 Hardware Design

0. Revision history

 

Revision

 

 

Date

 

 

Author

 

 

Description of change

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.0

 

2011-12-29

 

 

Luka WU

 

 

Initial

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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M95 Hardware Design

1. Introduction

This document defines Module M95 and describes its hardware interface which are connected with the customer application and the air interface.

This document can help customers quickly understand the interface specifications, electrical and mechanical details of M95. Associated with application notes and user guide, customers can use M95 to design and set up mobile applications easily.

1.1. Related documents

Table 1: Related documents

 

SN

 

 

Document name

 

 

Remark

 

 

 

 

 

 

 

[1]

 

 

M95_ATC

 

 

AT commands set

 

 

 

 

 

 

 

 

 

[2]

 

 

ITU-T Draft new

 

 

Serial asynchronous automatic dialing and control

 

 

 

 

 

recommendation V.25ter

 

 

 

 

 

 

 

 

 

 

 

 

[3]

 

 

GSM 07.07

 

 

Digital cellular telecommunications (Phase 2+); AT

 

 

 

 

 

 

 

 

command set for GSM Mobile Equipment (ME)

 

 

 

 

 

 

 

 

 

[4]

 

 

GSM 07.10

 

 

Support GSM 07.10 multiplexing protocol

 

 

 

 

 

 

 

 

 

[5]

 

 

GSM 07.05

 

 

Digital cellular telecommunications (Phase 2+); Use of

 

 

 

 

 

 

 

 

Data Terminal Equipment – Data Circuit terminating

 

 

 

 

 

 

 

 

Equipment (DTE – DCE) interface for Short Message

 

 

 

 

 

 

 

 

Service (SMS) and Cell Broadcast Service (CBS)

 

 

 

 

 

 

 

 

 

[6]

 

 

GSM 11.14

 

 

Digital cellular telecommunications (Phase 2+);

 

 

 

 

 

 

 

 

Specification of the SIM Application Toolkit for the

 

 

 

 

 

 

 

 

Subscriber Identity module – Mobile Equipment (SIM –

 

 

 

 

 

 

 

 

ME) interface

 

 

 

 

 

 

 

 

 

[7]

 

 

GSM 11.11

 

 

Digital cellular telecommunications (Phase 2+);

 

 

 

 

 

 

 

 

Specification of the Subscriber Identity module – Mobile

 

 

 

 

 

 

 

 

Equipment (SIM – ME) interface

 

 

 

 

 

 

 

 

 

[8]

 

 

GSM 03.38

 

 

Digital cellular telecommunications (Phase 2+);

 

 

 

 

 

 

 

 

Alphabets and language-specific information

 

[9]

 

 

GSM 11.10

 

 

Digital cellular telecommunications (Phase 2); Mobile

 

 

 

 

 

 

 

 

Station (MS) conformance specification; Part 1:

 

 

 

 

 

 

 

 

Conformance specification

 

 

 

 

 

 

 

 

 

[10]

 

 

GSM_UART_AN

 

 

UART port application notes

 

 

 

 

 

 

 

 

 

[11]

 

 

GSM_FW_Upgrade_Tool_

 

 

GSM Firmware upgrade tool lite GS2 user guide

 

 

 

 

 

Lite_GS2_UDG

 

 

 

 

 

 

 

 

 

 

 

 

[12]

 

 

M95_EVB_UGD

 

 

M95 EVB user guide

 

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1.2. Terms and abbreviations

Table 2: Terms and abbreviations

 

Abbreviation

 

 

Description

 

 

 

 

 

ADC

 

 

Analog-to-Digital Converter

 

 

 

 

AMR

 

 

Adaptive Multi-Rate

 

 

 

 

ARP

 

 

Antenna Reference Point

 

 

 

 

ASIC

 

 

Application Specific Integrated Circuit

 

 

 

 

BER

 

 

Bit Error Rate

 

 

 

 

BOM

 

 

Bill Of Material

 

 

 

 

BTS

 

 

Base Transceiver Station

 

 

 

 

CHAP

 

 

Challenge Handshake Authentication Protocol

 

 

 

 

CS

 

 

Coding Scheme

 

 

 

 

CSD

 

 

Circuit Switched Data

 

 

 

 

CTS

 

 

Clear To Send

 

 

 

 

DAC

 

 

Digital-to-Analog Converter

 

 

 

 

DRX

 

 

Discontinuous Reception

 

 

 

 

DSP

 

 

Digital Signal Processor

 

 

 

 

DCE

 

 

Data Communications Equipment (typically module)

 

 

 

 

DTE

 

 

Data Terminal Equipment (typically computer, external controller)

 

 

 

 

DTR

 

 

Data Terminal Ready

 

 

 

 

DTX

 

 

Discontinuous Transmission

 

 

 

 

EFR

 

 

Enhanced Full Rate

 

 

 

 

EGSM

 

 

Enhanced GSM

 

 

 

 

EMC

 

 

Electromagnetic Compatibility

 

 

 

 

ESD

 

 

Electrostatic Discharge

 

 

 

 

ETS

 

 

European Telecommunication Standard

 

 

 

 

FCC

 

 

Federal Communications Commission (U.S.)

 

 

 

 

FDMA

 

 

Frequency Division Multiple Access

 

 

 

 

FR

 

 

Full Rate

 

 

 

 

GMSK

 

 

Gaussian Minimum Shift Keying

 

 

 

 

GPRS

 

 

General Packet Radio Service

 

 

 

 

GSM

 

 

Global System for Mobile Communications

 

 

 

 

HR

 

 

Half Rate

I/O

 

 

Input/Output

 

 

 

 

IC

 

 

Integrated Circuit

 

 

 

 

IMEI

 

 

International Mobile Equipment Identity

 

 

 

 

Imax

 

 

Maximum Load Current

 

 

 

 

Inorm

 

 

Normal Current

 

 

 

 

kbps

 

 

Kilo Bits Per Second

 

 

 

 

LED

 

 

Light Emitting Diode

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M95 Hardware Design

Li-Ion

 

Lithium-Ion

 

 

 

Abbreviation

 

Description

MO

 

Mobile Originated

 

 

 

MS

 

Mobile Station (GSM engine)

 

 

 

MT

 

Mobile Terminated

 

 

 

PAP

 

Password Authentication Protocol

 

 

 

PBCCH

 

Packet Switched Broadcast Control Channel

 

 

 

PCB

 

Printed Circuit Board

 

 

 

PDU

 

Protocol Data Unit

 

 

 

PPP

 

Point-to-Point Protocol

 

 

 

RF

 

Radio Frequency

 

 

 

RMS

 

Root Mean Square (value)

 

 

 

RTC

 

Real Time Clock

 

 

 

RX

 

Receive Direction

 

 

 

SIM

 

Subscriber Identification Module

 

 

 

SMS

 

Short Message Service

 

 

 

TDMA

 

Time Division Multiple Access

 

 

 

TE

 

Terminal Equipment

 

 

 

TX

 

Transmitting Direction

 

 

 

UART

 

Universal Asynchronous Receiver & Transmitter

 

 

 

URC

 

Unsolicited Result Code

 

 

 

USSD

 

Unstructured Supplementary Service Data

 

 

 

VSWR

 

Voltage Standing Wave Ratio

 

 

 

Vmax

 

Maximum Voltage Value

 

 

 

Vnorm

 

Normal Voltage Value

 

 

 

Vmin

 

Minimum Voltage Value

 

 

 

VIHmax

 

Maximum Input High Level Voltage Value

 

 

 

VIHmin

 

Minimum Input High Level Voltage Value

 

 

 

VILmax

 

Maximum Input Low Level Voltage Value

 

 

 

VILmin

 

Minimum Input Low Level Voltage Value

 

 

 

VImax

 

Absolute Maximum Input Voltage Value

 

 

 

VImin

 

Absolute Minimum Input Voltage Value

 

 

 

VOHmax

 

Maximum Output High Level Voltage Value

 

 

 

VOHmin

 

Minimum Output High Level Voltage Value

 

 

 

VOLmax

 

Maximum Output Low Level Voltage Value

 

 

 

VOLmin

 

Minimum Output Low Level Voltage Value

 

 

Phonebook abbreviations

FD

 

SIM Fix Dialing phonebook

 

 

 

LD

 

SIM Last Dialing phonebook (list of numbers most recently dialed)

 

 

 

MC

 

Mobile Equipment list of unanswered MT Calls (missed calls)

 

 

 

ON

 

SIM (or ME) Own Numbers (MSISDNs) list

 

 

 

RC

 

Mobile Equipment list of Received Calls

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M95 Hardware Design

SM

SIM phonebook

 

 

1.3. Directives and standards

The M95 module is designed to comply with the FCC statements. FCC ID is XMR201202M95. The Host system using M95, should have label indicated FCC ID: XMR201202M95.

1.3.1. FCC Statement

1.This device complies with Part 15 of the FCC rules. Operation is subject to the following conditions:

a)This device may not cause harmful interference.

b)This device must accept any interference received, including interference that may cause undesired operation.

2.Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

1.3.2. FCC Radiation exposure statement

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body as well as kept minimum 20cm from radio antenna depending on the portable or Mobile status of this module usage.

The manual of the host system, which uses M95, must include RF exposure warning statement to advice user should keep minimum 20cm from the radio antenna of M95 module depending on portable or Mobile status.

Note: If a portable device (such as PDA) uses M95 module, the device needs to do permissive change and SAR testing.

1.3.3. Industry Canada licence

English version

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions:

a)This device may not cause harmful interference.

b)This device must accept any interference, including interference that may cause undesired operation of the device.

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M95 Hardware Design

The Host system using M95, should have label indicating “transmitter module

IC:10064-201202M95.

French version

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes :

a)l'appareil ne doit pas produire de brouillage, et

b)L’utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

1.4. Safety cautions

The following safety precautions must be observed during all phases of the operation, such as usage, service or repair of any cellular terminal or mobile incorporating M95 module. Manufacturers of the cellular terminal should send the following safety information to users and operating personnel and to incorporate these guidelines into all manuals supplied with the product. If not so, Quectel does not take on any liability for customer failure to comply with these precautions.

When in a hospital or other health care facility, observe the restrictions about the use of mobile. Switch the cellular terminal or mobile off. Medical equipment may be sensitive to not operate normally for RF energy interference.

Switch off the cellular terminal or mobile before boarding an aircraft. Make sure it switched off. The operation of wireless appliances in an aircraft is forbidden to prevent interference with communication systems. Forget to think much of these instructions may lead to the flight safety or offend against local legal action, or both.

Do not operate the cellular terminal or mobile in the presence of flammable gas or fume. Switch off the cellular terminal when you are near petrol station, fuel depot, chemical plant or where blasting operations are in progress. Operation of any electrical equipment in potentially explosive atmosphere can constitute a safety hazard.

Your cellular terminal or mobile receives and transmits radio frequency energy while switched on. RF interference can occur if it is used close to TV set, radio, computer or other electric equipment.

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M95 Hardware Design

Road safety comes first! Do not use a hand-held cellular terminal or mobile while driving a vehicle, unless it is securely mounted in a holder for hands-free operation. Before making a call with a hand-held terminal or mobile, park the vehicle.

GSM cellular terminals or mobiles operate over radio frequency signal and cellular network and cannot be guaranteed to connect in all conditions, for example no mobile fee or an invalid SIM card. While you are in this condition and need emergent help, Please Remember using emergency call. In order to make or receive call, the cellular terminal or mobile must be switched on and in a service area with adequate cellular signal strength.

Some networks do not allow for emergency call if certain network services or phone features are in use (e.g. lock functions, fixed dialing etc.). You may have to deactivate those features before you can make an emergency call.

Also, some networks require that a valid SIM card be properly inserted in cellular terminal or mobile.

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M95 Hardware Design

2. Product concept

M95 is a Quad-band GSM/GPRS engine that works at frequencies of GSM850MHz, GSM900MHz, DCS1800MHz and PCS1900MHz. The M95 features GPRS multi-slot class 12 and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4. For more details about GPRS multi-slot classes and coding schemes, please refer to Appendix A and Appendix B.

With a tiny profile of 19.9mm × 23.6mm × 2.65mm, the module can meet the requirements of almost all M2M applications, including Tracking and Tracing, Industrial PDA, Wireless POS, Intelligent Measurement, Remote Controlling, etc.

M95 is an SMD type module with LCC package, which can be embedded in customer applications. It provides abundant hardware interfaces between the module and customer’s host board.

Designed with power saving technique, the current consumption of M95 module is as low as 0.9 mA in SLEEP mode when DRX is 5.

M95 is integrated with Internet service protocols, which are TCP/IP, UDP, FTP and PPP. Extended AT commands have been developed for customer to use these Internet service protocols easily.

The module fully complies to FCC statements and RoHS directive of the European Union.

2.1. Key features

Table 3: Module key features

 

Feature

 

 

Implementation

 

 

 

 

 

Power supply

 

 

Single supply voltage 3.3V ~ 4.6V

 

 

 

 

 

Typical supply voltage 4V

 

 

 

 

 

 

Power saving

 

 

Typical power consumption in SLEEP mode: 0.9 mA@ DRX=5

 

 

 

 

 

 

0.7 mA@ DRX=9

 

 

 

 

 

 

Frequency bands

 

 

Quad-band: GSM850, GSM900, DCS1800, PCS1900.

 

 

 

 

 

The module can search these frequency bands automatically

 

 

 

 

 

The frequency bands can be set by AT command.

 

 

 

 

 

Compliant with GSM Phase 2/2+

 

GSM class

 

 

Small MS

 

 

 

 

 

 

Transmitting power

 

 

Class 4 (2W) at GSM850 and GSM900

 

 

 

 

 

Class 1 (1W) at DCS1800 and PCS1900

 

GPRS connectivity

 

 

GPRS multi-slot class 12 (default)

 

 

 

 

 

GPRS multi-slot class 1~12 (configurable)

 

 

 

 

 

GPRS mobile station class B

 

M95_HD_V1.0

 

 

 

- 15 -

 

M95 Hardware Design

Temperature range

Normal operation: -35°C ~ +80°C

 

Restricted operation: -40°C ~ -35°C and +80°C ~ +85°C 1)

 

Storage temperature: -45°C ~ +90°C

DATA GPRS:

GPRS data downlink transfer: max. 85.6 kbps

 

GPRS data uplink transfer: max. 85.6 kbps

 

Coding schemes: CS-1, CS-2, CS-3 and CS-4

 

Support the protocols PAP (Password Authentication Protocol)

 

 

usually used for PPP connections

 

Internet service protocols TCP/UDP/FTP/HTTP

 

Support Packet Switched Broadcast Control Channel (PBCCH)

CSD:

CSD transmission rates: 2.4, 4.8, 9.6, 14.4 kbps non-transparent

 

Support Unstructured Supplementary Services Data (USSD)

SMS

Text and PDU mode

 

SMS storage: SIM card

FAX

Group 3 Class 1 and Class 2

 

 

SIM interface

Support SIM card: 1.8V, 3V

 

 

Audio features

Speech codec modes:

 

Half Rate (ETS 06.20)

 

Full Rate (ETS 06.10)

 

Enhanced Full Rate (ETS 06.50 / 06.60 / 06.80)

 

Adaptive Multi-Rate (AMR)

 

Echo Cancellation

 

Echo Suppression

 

Noise Reduction

 

Embedded one amplifier of class AB with maximum driving

 

 

power up to 800mW

 

 

UART interface

UART Port:

 

Seven lines on UART port interface

 

Use for AT command, GPRS data and CSD data

 

Multiplexing function

 

Support autobauding from 4800 bps to 115200 bps

 

Debug Port:

 

Two lines on debug UART port interface DBG_TXD and

 

 

DBG_RXD

 

Debug Port only used for software debugging

Phonebook management

Support phonebook types: SM, ME, FD, ON, MT

 

 

SIM Application Toolkit

Support SAT class 3, GSM 11.14 Release 99

 

 

Real time clock

Implemented

 

 

 

Physical characteristics

Size:

 

 

19.9±0.15 ×23.6±0.15 ×2.65±0.2mm

 

Weight: 3g

 

 

Firmware upgrade

Firmware upgrade via UART Port

 

 

Antenna interface

Connected via 50 Ohm antenna pad

M95_HD_V1.0

 

- 16 -

M95 Hardware Design

Table 4: Coding schemes and maximum net data rates over air interface

 

Coding scheme

 

 

1 Timeslot

 

 

2 Timeslot

 

 

4 Timeslot

 

 

 

 

 

 

 

 

 

CS-1:

 

 

9.05kbps

 

 

18.1kbps

 

 

36.2kbps

 

 

 

 

 

 

 

 

 

 

 

 

CS-2:

 

 

13.4kbps

 

 

26.8kbps

 

 

53.6kbps

 

 

 

 

 

 

 

 

 

 

 

 

CS-3:

 

 

15.6kbps

 

 

31.2kbps

 

 

62.4kbps

 

 

 

 

 

 

 

 

 

 

 

 

CS-4:

 

 

21.4kbps

 

 

42.8kbps

 

 

85.6kbps

 

 

 

 

 

 

 

 

 

 

 

 

 

2.2. Functional diagram

The following figure shows a block diagram of the M95 module and illustrates the major functional parts:

Power management

Baseband

The GSM radio frequency part

The Peripheral interface

SIM interface

Audio interface

UART interface

Power supply

RF interface

Turn on/off interface

RTC interface

M95_HD_V1.0

- 17 -

M95 Hardware Design

 

Power

 

UART

Application

 

 

 

 

 

 

Interface

26M

supply

 

SIM

 

 

MT6252D

 

 

 

 

 

 

VDD_EXT

 

 

 

PWRKEY

 

 

 

SMD-(42

PA

 

Contro

EMERG_OFF

 

l

 

 

TQM6M4068

 

 

VRTC

 

 

 

AUDIO

 

 

 

Pads)

 

32.768K

 

 

 

 

 

 

 

 

RF_ANTENNA

 

Figure 1: Module functional diagram

2.3. Evaluation board

In order to help customer to develop applications with M95, Quectel supplies an evaluation board (EVB), RS-232 to USB cable, power adapter, earphone, antenna and other peripherals to control or test the module. For details, please refer to the document [12].

M95_HD_V1.0

- 18 -

M95 Hardware Design

3. Application interface

The module is equipped with 42 pin SMT pad and it adopts LCC package. Detailed descriptions on Sub-interfaces included in these pads are given in the following chapters:

Power supply

Turn on/off

Power saving

RTC

UART interfaces

Audio interfaces

SIM interface

M95_HD_V1.0

- 19 -

M95 Hardware Design

3.1. Pin

3.1.1. Pin assignment

Figure 2: Pin assignment

Table 5: M95 pin assignment

 

PIN NO.

 

 

PIN NAME

 

 

I/O

 

 

 

PIN NO.

 

 

PIN NAME

 

 

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

AGND

 

 

 

 

 

2

 

 

MIC2P

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

MIC2N

 

 

I

 

 

4

 

 

MIC1P

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

MIC1N

 

 

I

 

 

6

 

 

SPK1N

 

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

SPK1P

 

 

O

 

 

8

 

 

LOUDSPKN

 

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

 

LOUDSPKP

 

 

O

 

 

10

 

 

PWRKEY

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11

 

 

EMERG_OFF

 

 

I

 

 

12

 

 

STATUS

 

 

O

M95_HD_V1.0

 

 

 

 

 

 

 

 

 

 

 

- 20 -

M95 Hardware Design

 

13

 

NETLIGHT

 

O

 

 

14

 

DBG_RXD

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

 

DBG_TXD

 

O

 

 

16

 

RESERVED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

17

 

RESERVED

 

 

 

 

18

 

RESERVED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19

 

VDD_EXT

 

O

 

 

20

 

DTR

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

 

RXD

 

 

I

 

 

22

 

TXD

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

23

 

CTS

 

 

O

 

 

24

 

RTS

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25

 

DCD

 

 

O

 

 

26

 

RI

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

27

 

SIM_VDD

 

O

 

 

28

 

SIM_RST

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

29

 

SIM_DATA

 

I/O

 

 

30

 

SIM_CLK

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

31

 

SIM_GND

 

 

 

 

32

 

VRTC

 

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

33

 

VBAT

 

 

I

 

 

34

 

VBAT

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

35

 

GND

 

 

 

 

 

36

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

37

 

GND

 

 

 

 

 

38

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

39

 

RF_ANT

 

 

I/O

 

 

40

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

41

 

RESERVED

 

 

 

 

42

 

RESERVED

 

 

 

 

 

3.1.2. Pin description

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 6: Pin description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Power supply

 

 

 

 

 

 

 

 

 

 

 

 

 

PIN NAME

 

PIN

I/

DESCRIPTION

 

DC

COMMENT

 

 

 

 

NO.

O

 

 

 

 

 

CHARACTERISTICS

 

 

 

 

 

 

 

 

 

 

 

 

 

VBAT

 

33,

I

Main power supply of

Vmax= 4.6V

Make sure that supply

 

 

 

 

34

 

module:

 

Vmin=3.3V

sufficient current in a

 

 

 

 

 

 

VBAT=3.3V~4.6V

 

Vnorm=4.0V

transmitting burst

 

 

 

 

 

 

 

 

 

 

 

 

 

which typically rises

 

 

 

 

 

 

 

 

 

 

 

 

 

to 1.6A.

 

VRTC

 

32

I/

Power supply for RTC

VImax=VBAT

If unused, keep this

 

 

 

 

 

O

when VBAT is not

 

VImin=2.6V

pin open.

 

 

 

 

 

 

supplied for the

 

VInorm=2.8V

 

 

 

 

 

 

 

 

 

 

system.

 

VOmax=2.85V

 

 

 

 

 

 

 

 

 

 

Charging for backup

VOmin=2.6V

 

 

 

 

 

 

 

 

 

 

battery or golden

 

VOnorm=2.8V

 

 

 

 

 

 

 

 

 

 

capacitor when the

 

Iout(max)= 730uA

 

 

 

 

 

 

 

 

 

 

VBAT is supplied.

 

Iin=2.6~5 uA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VDD_EXT

 

19

O

Supply 2.8V voltage

 

Vmax=2.9V

1. If unused, keep this

 

 

 

 

 

 

for external circuit.

 

Vmin=2.7V

pin open.

 

 

 

 

 

 

 

 

 

 

 

Vnorm=2.8V

2. Recommended to

 

 

 

 

 

 

 

 

 

 

 

Imax=20mA

add a 2.2~4.7uF

 

M95_HD_V1.0

 

 

 

 

 

 

 

 

 

 

- 21 -

 

 

M95 Hardware Design

 

 

 

 

 

bypass capacitor,

 

 

 

 

 

when using this pin

 

 

 

 

 

for power supply.

 

 

 

 

 

 

GND

35,

 

Ground

 

 

 

36,

 

 

 

 

 

37,

 

 

 

 

 

38,

 

 

 

 

 

40

 

 

 

 

 

 

 

 

 

 

Turn on/off

 

 

 

 

 

PIN NAME

PIN

I/

DESCRIPTION

DC

COMMENT

 

NO.

O

 

CHARACTERISTICS

 

 

 

 

 

 

 

PWRKEY

10

I

Power on/off key.

VILmax=

Pulled up to VBAT

 

 

 

PWRKEY should be

0.1*VBAT

internally.

 

 

 

pulled down for a

VIHmin=

 

 

 

 

moment to turn on or

0.6*VBAT

 

 

 

 

turn off the system.

VImax=VBAT

 

 

 

 

 

 

 

Emergency shutdown

 

 

 

 

PIN NAME

PIN

I/

DESCRIPTION

DC

COMMENT

 

NO.

O

 

CHARACTERISTICS

 

 

 

 

 

 

 

EMERG_

11

I

Emergency off. Pulled

VILmax=0.4V

Open drain/collector

OFF

 

 

down for at least

VIHmin=2.2V

driver required in

 

 

 

20ms, which will turn

Vopenmax=2.8V

cellular device

 

 

 

off the module in case

 

application.

 

 

 

of emergency. Use it

 

If unused, keep this

 

 

 

only when normal

 

pin open.

 

 

 

shutdown through

 

 

 

 

 

PWRKEY or AT

 

 

 

 

 

command cannot

 

 

 

 

 

perform well.

 

 

 

 

 

 

 

 

Module indicator

 

 

 

 

PIN NAME

PIN

I/

DESCRIPTION

DC

COMMENT

 

NO.

O

 

CHARACTERISTICS

 

STATUS

12

O

Indicate module

VOHmin=

If unused, keep this

 

 

 

operating status. High

0.85*VDD_EXT

pin open.

 

 

 

level indicates module

VOLmax=

 

 

 

 

is power-on and low

0.15*VDD_EXT

 

 

 

 

level indicates

 

 

 

 

 

power-down.

 

 

 

 

 

 

 

 

Audio interface

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PIN NAME

PIN

I/

DESCRIPTION

DC

COMMENT

 

NO.

O

 

CHARACTERISTICS

 

 

 

 

 

 

 

MIC1P

4

I

Channel one of

 

If unused, keep these

MIC1N

5

 

positive and negative

 

pins open.

M95_HD_V1.0

 

 

 

 

- 22 -

M95 Hardware Design

 

 

 

voice-band input

 

 

 

 

 

 

 

 

 

 

MIC2P

2

I

Channel two of

 

 

 

MIC2N

3

 

positive and negative

 

 

 

 

 

 

voice-band input

 

 

 

 

 

 

 

 

 

 

SPK1N

6,

O

Channel one of

 

If unused, keep these

 

SPK1P

7

 

positive and negative

 

pins open.

 

 

 

 

voice-band output

 

 

 

 

 

 

 

 

 

 

AGND

1

 

Cooperate with

 

If unused, keep this

 

 

 

 

LOUDSPKP

 

pin open.

 

 

 

 

 

 

 

 

LOUDSPKN

8 9

O

Channel two of

 

1. If unused, keep

 

 

 

 

positive and negative

 

these pins open.

 

LOUDSPKP

 

 

voice-band output

 

2. Embedded

 

 

 

 

 

 

amplifier of class AB

 

 

 

 

 

 

internally.

 

 

 

 

 

 

3. Support both Voice

 

 

 

 

 

 

and ring.

 

 

 

 

 

 

 

 

Net status indicator

 

 

 

 

 

PIN NAME

PIN

I/

DESCRIPTION

DC

COMMENT

 

 

NO.

O

 

CHARACTERISTICS

 

 

NETLIGHT

13

O

Network status

VOHmin=

If unused, keep this

 

 

 

 

indication

0.85*VDD_EXT

pin open.

 

 

 

 

 

VOLmax=

 

 

 

 

 

 

0.15*VDD_EXT

 

 

 

 

 

 

 

 

 

Main UART port

 

 

 

 

 

PIN NAME

PIN

I/

DESCRIPTION

DC

COMMENT

 

 

NO.

O

 

CHARACTERISTICS

 

 

 

 

 

 

 

 

 

DTR

20

I

Data terminal ready

VILmin=-0.3V

If only use TXD,

 

 

 

 

 

VILmax=

RXD and GND to

 

RXD

21

I

Receiving data

 

 

 

 

 

0.25*VDD_EXT

communicate,

 

TXD

22

O

Transmitting data

 

 

 

 

 

VIHmin=

recommended keeping

 

CTS

23

O

Clear to send

 

 

 

 

 

0.75*VDD_EXT

other pins open,

 

RTS

24

I

Request to send

 

 

 

 

 

 

 

 

VIHmax=

except RTS. Pull

 

DCD

25

O

Data carrier detection

 

 

 

 

RI

26

O

Ring indicator

VDD_EXT+0.3V

down RTS.

 

 

 

 

 

 

 

 

VOHmin=

 

 

 

 

 

 

0.85*VDD_EXT

 

 

 

 

 

 

VOLmax=

 

 

 

 

 

 

0.15*VDD_EXT

 

 

 

 

 

 

 

 

 

Debug UART port

 

 

 

 

 

PIN NAME

PIN

I/

DESCRIPTION

DC

COMMENT

 

 

NO.

O

 

CHARACTERISTICS

 

 

 

 

 

 

 

 

 

M95_HD_V1.0

- 23 -

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