Quectel Wireless Solutions 201202M35 Users Manual

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Quectel Wireless Solutions 201202M35 Users Manual

M35

Quectel Cellular Engine

Hardware Design

M35_HD_V1.0

M35 Hardware Design

 

 

Document Title

 

M35 Hardware Design

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Revision

 

1.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2012-02-06

 

 

 

 

 

 

Date

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Released

 

 

 

 

 

 

Status

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M35_HD_V1.0

 

 

 

 

 

 

Document Control ID

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

General Notes

 

 

 

 

 

 

 

 

Quectel

 

Quectel offers this information as a service to its custom rs, to support application and

 

engineering efforts that use the products designed by Qu c l. The information provided is based

 

upon requirements specifically provided for ustomers of Qu c

l. Qu ct

has not undertaken any

Confidential

 

independent search for additional information, relevant

o any information that m y be n the

 

customer’s possession. Furth rmor , syst m valida ion of

his product d signed by Quec el w thin

 

a larger electronic system r mains the r sponsibili y of

he customer or

he cus omer’s system

 

integrator. All specifications s ppli d h r in are subje t to

hange.

 

 

 

Copyright

 

 

 

 

 

 

 

This document contains

proprietary techn cal nformation of

Qu ct l Co., Ltd. Copying this

 

document, distribution to others, and commun cation of the cont nts thereof, are forbidden

 

without permission. Offenders are liable to the paym nt of

amag s. All rights are reserved in the

 

event of a patent gra t or registration of a ut l ty mo el or

esign. All specifications supplied

 

herein are subject to cha

ge without ot ce at any t me.

 

 

 

 

Copyright © Shanghai Quectel Wireless Solutions Ltd. 2012

M35_HD_V1.0

- 2 -

M35 Hardware Design

 

 

 

 

 

 

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/IC Radiation exposure statement ..................................................................

12

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

 

12

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

 

13

Quectel

 

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

 

 

15

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

 

 

15

Confidential

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

 

17

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

 

18

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

 

19

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

 

 

 

20

3.1.1. Pin assignm nt ......................................................................................................

 

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

rop...............................................................................

27

3.3.3. Refere

ce p wer des gn

or the module................................................................

28

3.3.4. M nit

r p wer supply ...........................................................................................

 

29

3.4. P wer

n a d d wn sce arios ..........................................................................................

 

29

3.4.1. P

wer

...............................................................................................................

 

29

3.4.2. P wer d wn...........................................................................................................

 

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

M35_HD_V1.0

 

 

 

- 3 -

M35 Hardware Design

 

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

Quectel

 

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

60

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

60

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

60

Confidential

5. Electrical, reliability and radio chara t risti s ............................................................................

62

5.1. Absolute maxim m ratings ..............................................................................................

62

5.2. Operating temperat re......................................................................................................

62

5.3. Power s pply ratings ........................................................................................................

62

5.4. Current cons mption........................................................................................................

63

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

64

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

65

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

65

6.2. Footprint of recomme dation...........................................................................................

67

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

68

6.4. B tt m view f the m dule..............................................................................................

69

7. Storage and Manufacturi g .........................................................................................................

70

7.1. St rage .............................................................................................................................

70

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

72

Appendix A: GPRS c ding schemes...............................................................................................

73

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

74

M35_HD_V1.0

- 4 -

M35 Hardware Design

 

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: M35 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

Quectel

 

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

49

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

52

Confidential

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: DES RIPTION OF DIFFERENT CODING SCHEMES ..................................................

73

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

74

M35_HD_V1.0

- 5 -

M35 Hardware Design

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

Quectel

 

 

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

Confidential

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: M35 TOP AND SIDE DIMENSIONS UNIT: MM ...................................................

 

65

FIGURE 41: M35 BOTTOM DIMENSIONS UNIT: MM .............................................................

 

66

M35_HD_V1.0

- 6 -

 

M35 Hardware Design

 

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

ConfidentialQuectel

M35_HD_V1.0

- 7 -

M35 Hardware Design

0. Revision history

 

Revision

 

 

Date

 

 

Author

 

 

Description of change

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.0

 

2011-12-29

 

 

Luka WU

 

 

Initial

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ConfidentialQuectel

M35_HD_V1.0

- 8 -

M35 Hardware Design

1. Introduction

This document defines Module M35 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 M35. Associated with application notes and user guide, customers can use M35 to design and set up mobile applications easily.

1.1. Related documents

Table 1: Related documents

 

 

 

Quectel

 

 

 

 

SN

 

Document name

Remark

 

 

 

 

[1]

 

M35 ATC

AT ommands s

 

 

 

 

ConfidentialAlphabets and language-specific information

 

 

 

[2]

 

ITU-T Draft new

S rial asyn hronous au omatic dialing and con rol

 

 

 

 

recommendation V.25t r

 

 

 

 

 

 

[3]

 

GSM 07.07

Digital

llular telecommu icatio s (Phase 2+); AT

 

 

 

 

 

 

ommand set for GSM Mobile Equipme (ME)

 

 

[4]

 

GSM 07.10

Support GSM 07.10 multipl xi g pro ocol

 

 

 

[5]

 

GSM 07.05

Digital cellular t l commu icatio s (Phase 2+); Use of

 

 

 

 

 

 

Data Term nal Equipm t – Data Circuit terminating

 

 

 

 

 

Equ pment (DTE – DCE) int rface for Short Message

 

 

 

 

 

Serv ce (SMS) and C ll Broadcast Service (CBS)

 

 

[6]

 

GSM 11.14

D g tal cellular telecommunications (Phase 2+);

 

 

 

 

 

 

Spec

cat on 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+);

 

 

 

 

 

 

 

 

 

[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]

 

M35_EVB_UGD

M35 EVB user guide

 

 

 

M35_HD_V1.0

 

- 9 -

 

 

 

M35 Hardware Design

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

 

 

 

 

 

 

 

 

 

Quectel

 

 

CHAP

 

 

Challenge Handshake Authentication Protocol

 

 

CS

 

 

Coding Scheme

 

 

CSD

 

 

Circuit Switched Data

 

 

CTS

 

 

Clear To Send

 

 

DAC

 

 

Digital-to-Analog Conv rt r

 

 

 

 

 

Confidential

 

 

DRX

 

 

Discontinuous R c ption

 

 

DSP

 

 

Digital Signal Proc ssor

 

 

DCE

 

 

Data Comm nications Equipment (typi ally module)

 

 

DTE

 

 

Data Terminal Eq ipm nt (typically comput r, xt r al co roller)

 

 

DTR

 

 

Data Terminal Ready

 

 

DTX

 

 

Discontin o s Transm ss on

 

 

EFR

 

 

Enhanced Full Rate

 

 

EGSM

 

 

E ha ced GSM

 

 

EMC

 

 

Electromag etic Compat b l ty

 

 

ESD

 

 

Electr static Discharge

 

 

ETS

 

 

Eur pean Telecommu ication Standard

 

 

 

 

 

 

 

 

F

 

 

Federal C mmu ications 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

 

 

M35_HD_V1.0

- 10 -

 

 

M35 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

 

 

 

 

 

 

 

 

 

 

Quectel

 

 

SIM

 

Subscriber Identification Module

 

 

SMS

 

Short Message Servi e

 

 

 

 

TDMA

 

Time Division Multiple A

ss

 

 

 

Confidential

 

 

 

TE

 

Terminal Equipm nt

 

 

 

 

TX

 

Transmitting Dir ction

 

 

 

 

UART

 

Universal Asynchronous R

iver & Transmitter

 

 

URC

 

Unsolicit d R s lt Code

 

 

 

 

USSD

 

Unstr ct red S pplementary Service Data

 

 

VSWR

 

Voltage Standing Wave Rat o

 

 

Vmax

 

Maximum Voltage Value

 

 

 

 

Vnorm

 

Normal Voltage Value

 

 

 

 

Vmin

 

Mi imum Voltage Value

 

 

 

 

VIHmax

 

Maximum I put H gh Level Voltage Value

 

 

 

VIHmin

 

Mi imum I put High Level Voltage Value

 

 

 

 

 

 

 

 

VILmax

 

Maximum I put Low Level Voltage Value

 

 

 

 

 

 

 

 

VILmin

 

Mi imum I put Low Level Voltage Value

 

 

 

 

 

 

 

 

VImax

 

Abs lute 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

 

 

M35_HD_V1.0

 

 

- 11 -

 

 

M35 Hardware Design

SM

SIM phonebook

 

 

1.3. Directives and standards

The M35 module is designed to comply with the FCC statements. FCC ID is XMR201202M35. The Host system using M35, should have label indicated FCC ID: XMR201202M35.

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 rec iv d, including int rference that may cause undesired operation.

2. Changes or modifications not expressly approved by he party r sponsib e for compli nce could void the user’s authority to op rate the equipm nt.

1.3.2. FCC/IC Radiation expos re stat m nt

This equipment complies with FCC/IC ra iation exposure limits s t forth for an uncontrolled

environment. This eq ipment sho ld be nstalled and op rat d with mi imum 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 th s mo ule usage.

Quectel

The manual f the h st system, which uses M35, must include RF exposure warning statement to

advice user sh uld keep mi imum 20cm rom the radio antenna of M35 module depending on

portable or M bile status.

1.3.3. Industry

anada licence

Under Industry

anada regulations, this radio transmitter may only operate using an antenna of a

Confidential

type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful.

The host system using M35 should have label indicating “transmitter module IC:

10224-201202M35.

This radio transmitter (identify the device by certification number, or module number if Category II) has been approved by Industry Canada to operate with the antenna type listed below with the

M35_HD_V1.0

- 12 -

M35 Hardware Design

maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device.

The following list of antenna is indicating the maximum permissible antenna gain.

 

Type

 

 

Maximum Gain

 

 

Impedance

 

 

 

 

 

 

 

 

 

External Antenna

Monopole

 

2dBi

 

 

50Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vehicular antenna

 

2dBi

 

 

50Ω

 

 

 

 

 

 

 

 

 

 

 

Internal Antenna

Monopole

 

2dBi

 

 

50Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PIFA

 

2dBi

 

 

50Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FPC

 

2dBi

 

 

50Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PCB

 

2dBi

 

 

50Ω

 

 

 

 

 

 

 

 

 

 

 

 

Quectel

 

 

 

1.4. Safety cautions

 

 

 

 

 

Confidential

The following safety precautions must be obs rved during all phas s of

he oper

on, such

s

usage, service or repair of any c llular t rminal or mobile

i corpora i g

M35 modu e.

Manufacturers of the cell lar t rminal should s nd the followi g safety i

forma

on

o users

nd

operating personnel and to incorporate th se guid lin s into all ma

uals supplied w h

he product.

If not so, uectel does not take on any liability for custom r

failure

o comply

wi h these

precautions.

 

 

 

 

 

When in a hospital or other health care facility, obs rve the restrictions about the use of mobile. Switch the cellular terminal or mobile off. Medical equipment may be se sitive to ot operate normally for RF energy interference.

Switch ff the cellular terminal or mobile before boarding an aircraft. Make sure it switched ff. 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.

M35_HD_V1.0

- 13 -

M35 Hardware Design

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.

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

Quectel

cellular network and cannot be guarante d to conn ct in

a conditions, for

example no mobile fee or an invalid SIM card. Whi

you are in this condition

and need emergent help, Please Rem mb r using

m rg ncy call. In order to

make or receive call, the ellular erminal or mobile must be sw tched on nd in

Confidential

a service ar a with ad quate llular signal s r ngth.

 

 

Some networks do not allow for emergency call if certain

e work serv ces or

phone feat r s are in use (e.g. lo k fun tions, fixed diali g e c.). You m y h ve

to deactivate those f atur s b fore you can make an

m rge

cy call.

Also, some networks requ re that a valid SIM card be properly inserted in cellular terminal or mob le.

M35_HD_V1.0

- 14 -

M35 Hardware Design

2. Product concept

M35 is a Quad-band GSM/GPRS engine that works at frequencies of GSM850MHz, GSM900MHz, DCS1800MHz and PCS1900MHz. The M35 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.

 

M35 is an SMD type module with LCC package, which can be embedded in customer applications.

 

It provides abundant hardware interfaces between the module and custom r’s host board.

 

 

Quectel

 

Designed with power saving technique, the urrent onsump ion of M35 modu e is as low as 0.9

 

mA in SLEEP mode when DRX is 5.

 

 

 

 

Confidential

 

M35 is integrated with Int rn t

s rvi proto ols, whi h

are TCP/IP,

UDP, FTP nd PPP.

 

Extended AT commands have b

n d v lop d for ustomer to use these I

er et serv ce protocols

 

easily.

 

 

 

 

 

 

 

 

 

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

 

2.1. Key features

 

 

 

 

 

 

 

 

 

Table 3: Module key features

 

 

 

 

 

 

 

Feature

 

 

Impleme tation

 

 

 

 

 

Power supply

 

 

Si gle 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

 

 

 

 

M35_HD_V1.0

 

 

 

 

 

- 15 -

 

 

M35 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

 

 

 

 

 

Quectel

 

 

SIM interface

Support SIM ard: 1.8V, 3V

 

Audio features

Speech codec modes:

 

 

Confidential

 

 

Half Rate (ETS 06.20)

 

 

Full Rate (ETS 06.10)

 

 

Enhan d Full Rate (ETS 06.50 / 06.60 / 06.80)

 

 

Adaptive Multi-Rate (AMR)

 

 

Echo Canc llation

 

 

Echo Suppression

 

 

No se Re uct on

 

 

Embed ed one amplifi r of class AB with maximum driving

 

 

 

power up to 800mW

 

UART interface

UART Port:

 

 

 

Seven l es on UART port interface

 

 

Use or 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

 

 

M35_HD_V1.0

 

- 16 -

 

 

M35 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 M35 module and illustrates the major functional parts:

Power management

QuectelBaseband

The GSM radio frequency part

The Peripheral interface

ConfidentialSIM interface

Audio interface

UART interface

Power s pply

RF interface

Turn on/off interface

RTC interface

M35_HD_V1.0

- 17 -

M35 Hardware Design

 

 

 

 

 

 

 

Power

 

 

 

 

 

UART

 

Application

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Interface

 

 

 

 

 

 

 

 

supply

 

 

 

 

 

SIM

 

 

 

 

 

26M

 

 

 

 

 

MT6252D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VDD_EXT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PWRKEY

 

SMD-(42

 

 

 

 

 

 

 

 

 

 

Contro

 

 

 

 

 

 

 

 

 

 

 

 

PA

 

 

 

EMERG_OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

l

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VRTC

 

 

 

 

 

 

 

TQM6M4068

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUDIO

 

Pads)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

32.768K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Quectel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RF ANTENNA

 

 

 

Confidential

 

 

 

 

 

 

Figure 1: Module fun ional diagram

 

 

2.3. Evaluation board

In order to help c stomer to develop appl cat ons w th M35, Qu ct l supplies an evaluation board (EVB), RS-232 to USB cable, power adapter, earphon , ant nna and oth r peripherals to control or test the module. For details, please re er to the ocum nt [12].

M35_HD_V1.0

- 18 -

M35 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

ConfidentialQuectel

M35_HD_V1.0

- 19 -

M35 Hardware Design

3.1. Pin

3.1.1. Pin assignment

 

 

Quectel

Confidential

 

 

 

 

 

 

 

 

Figure 2: Pin assignment

 

 

 

 

 

 

 

 

 

Table 5: M35 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

 

 

 

M35_HD_V1.0

 

 

 

 

 

 

 

 

 

 

 

- 20 -

 

 

 

 

M35 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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Quectel

 

 

 

 

 

 

39

 

RF ANT

 

I/O

40

 

GND

 

 

 

 

 

41

 

RESERVED

 

 

 

42

 

RESERVED

 

 

 

 

Confidential

 

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/

P wer 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

 

 

M35_HD_V1.0

 

 

 

 

 

 

 

 

 

- 21 -

 

 

M35 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=

 

 

 

Quectel

 

 

 

 

 

moment to turn on or

0.6*VBAT

 

 

 

 

 

turn off the system.

VImax=VBAT

 

 

Emergency shutdown

 

 

 

 

 

 

 

Confidential

 

PIN NAME

PIN

I/

DESCRIPTION

DC

COMMENT

 

 

NO.

O

 

CHARACTERISTICS

 

 

EMERG

11

I

Em rg n y off. Pulled

VILmax=0.4V

Open dr n/collector

 

OFF

 

 

down for at l ast

VIHmin=2.2V

dr ver requ red in

 

 

 

 

20ms, which will turn

Vop nmax=2.8V

cellular device

 

 

 

 

off the module n case

 

application.

 

 

 

 

of emergency. Use t

 

If unused, keep this

 

 

 

 

only when normal

 

pin open.

 

 

 

 

shutdown through

 

 

 

 

 

 

PWRKEY or AT

 

 

 

 

 

 

c mma d cannot

 

 

 

 

 

 

perform well.

 

 

 

 

 

 

 

 

 

 

Module indicat r

 

 

 

 

 

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.

 

M35_HD_V1.0

 

 

 

 

- 22 -

 

M35 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.

 

 

Quectel

3. Support both Voice

 

 

and ring.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Net status indicator

 

 

 

 

 

 

 

 

Confidential

 

PIN NAME

PIN

I/

DESCRIPTION

DC

COMMENT

 

 

NO.

O

 

CHARACTERISTICS

 

 

NETLIGHT

13

O

N twork status

VOHmi =

 

If unused, keep this

 

 

 

 

indication

0.85*VDD EXT

 

p open.

 

 

 

 

 

VOLmax=

 

 

 

 

 

 

 

0.15*VDD EXT

 

 

 

Main UART port

 

 

 

 

 

 

PIN NAME

PIN

I/

DESCRIPTION

DC

COMMENT

 

 

NO.

O

 

CHARACTERISTICS

 

 

DTR

20

I

Data term al rea y

VILmin=-0.3V

If only use TXD,

 

RXD

21

I

Receivi g data

VILmax=

RXD and GND to

 

 

 

 

 

0.25*VDD EXT

communicate,

 

TXD

22

O

Tra smitti g data

 

 

 

 

 

VIHmin=

recommended keeping

 

TS

23

O

Clear to se d

 

 

 

 

 

0.75*VDD EXT

other pins open,

 

RTS

24

I

Request to send

 

 

 

 

 

 

 

 

 

VIHmax=

except RTS. Pull

 

D D

25

O

Data carrier detection

 

 

 

 

 

 

 

 

 

VDD EXT+0.3V

down RTS.

 

RI

26

O

Ring indicator

 

 

 

 

 

 

 

 

 

VOHmin=

 

 

 

 

 

 

0.85*VDD EXT

 

 

 

 

 

 

VOLmax=

 

 

 

 

 

 

0.15*VDD_EXT

 

 

 

 

 

 

 

 

 

 

Debug UART port

 

 

 

 

 

 

PIN NAME

PIN

I/

DESCRIPTION

DC

 

COMMENT

 

 

NO.

O

 

CHARACTERISTICS

 

 

 

 

 

 

 

 

 

 

 

M35_HD_V1.0

- 23 -

+ 52 hidden pages