Quectel Wireless Solutions 201903EG91NS Users Manual

LTE

Rev.

Date:

Statu

odule

EG91_H

2019-0

s: Relea

eries

rdware

-03

Design

V1.3

www.que

tel.com

LTE Module Series

EG91 Hardware Design

Our aim is to provide customers with timely and comprehensive service. For any assistance, please contact our company headquarters:

Quectel Wireless Solutions Co., Ltd.

7th Floor, Hongye Building, No.1801 Hongmei Road, Xuhui District, Shanghai 200233, China

Tel: +86 21 5108 6236

Email: info@quectel.com

Or our local office. For more information, please visit:

http://www.quectel.com/support/sales.htm

For technical support, or to report documentation errors, please visit:

http://www.quectel.com/support/technical.htm

Or email to: support@quectel.com

GENERAL NOTES

QUECTEL OFFERS THE INFORMATION AS A SERVICE TO ITS CUSTOMERS. THE INFORMATION

PROVIDED IS BASED UPON CUSTOMERS’ REQUIREMENTS. QUECTEL MAKES EVERY EFFORT

TO ENSURE THE QUALITY OF THE INFORMATION IT MAKES AVAILABLE. QUECTEL DOES NOT

MAKE ANY WARRANTY AS TO THE INFORMATION CONTAINED HEREIN, AND DOES NOT ACCEPT

ANY LIABILITY FOR ANY INJURY, LOSS OR DAMAGE OF ANY KIND INCURRED BY USE OF OR

RELIANCE UPON THE INFORMATION. ALLINFORMATION SUPPLIED HEREIN IS SUBJECT TO

CHANGE WITHOUT PRIOR NOTICE.

THE INFORMATION CONTAINED HERE IS PROPRIETARY TECHNICAL INFORMATION OF

QUECTEL WIRELESS SOLUTIONS CO., LTD. TRANSMITTING, REPRODUCTION, DISSEMINATION

AND EDITING OF THIS DOCUMENT AS WELL AS UTILIZATION OF THE CONTENT ARE

FORBIDDEN WITHOUT PERMISSION. OFFENDERS WILL BE HELD LIABLE FOR PAYMENT OF

DAMAGES. ALL RIGHTS ARE RESERVED IN THE EVENT OF A PATENT GRANT OR

REGISTRATION OF A UTILITY MODEL OR DESIGN.

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EG91 Hardware Design

About the Document

History

Revision Date Author Description

Felix YIN/

1.0 2017-03-22

Yeoman CHEN/

Jackie WANG

Initial

LTE Module Series

1.1 2018-01-23

1.2 2018-03-14

Felix YIN/

Rex WANG

Felix YIN/

Rex WANG

1. Added band B28A.

2. Updated the description of UMTS and GSM

features in Table 2.

3. Updated the functional diagram in Figure 1.

4. Updated module operating frequencies in

Table 21.

5. Updated current consumption in Table 26.

6. Updated RF output power in Table 27.

7. Updated the conducted RF receiving

sensitivity in Table 28.

8. Updated the GPRS multi-slot classes in

Table 33.

9. Added thermal consideration in Chapter 5.8

10. Added a GND pad in each of the four corners

of the module’s footprint in Chapter 6.2.

11. Updated storage information in Chapter 7.1.

12. Added packaging information in Chapter 7.3.

1. Added the description of EG91-NA.

2. Updated the functional diagram in Figure 1.

3. Updated pin assignment in Figure 2.

4. Updated GNSS function in Table 1.

5. Updated GNSS Features in Table 2.

6. Updated reference circuit of USB interface

in Figure 21.

7. Added description of GNSS receiver in

Chapter 4.

EG91_Hardware_Design 2 / 93

EG91 Hardware Design

Ward WANG/

1.3 2019-02-03

Nathan LIU/

Rex WANG

LTE Module Series

8. Updated pin definition of RF antenna in

Table 21.

9. Updated module operating frequencies in

Table 22.

10. Added description of GNSS antenna

interface in Chapter 5.2.

11. Updated antenna requirements in Table 25.

12. Updated RF output power in Table 32.

1. Added new variants EG91-NS, EG91-V,

EG91-EC and related contents.

2. Opened pin 24 as ADC0 and added related

contents.

3. Updated functional diagram (Figure 1)

4. Updated pin assignment (Figure 2)

5. Updated GNSS features (Table 2)

6. Added USB_BOOT interface information

(Chapter 3.18)

7. Updated storage information (Chapter 8.1)

8. Updated module operating frequencies

(Table 23)

9. Updatedantenna requirements (Table26)

10. Added current consumption of EG91-NS,

EG91-V and EG91-EC (Table 32, 33 and 34)

11. Added conducted RF receiving sensitivityof

EG91-NS, EG91-V and EG91-EC (Table 39,

40 and 41)

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Contents

About the Document ................................................................................................................................ 2

Contents .................................................................................................................................................... 4

Table Index ............................................................................................................................................... 7

Figure Index .............................................................................................................................................. 9

1 Introduction ..................................................................................................................................... 11

1.1. Safety Information ................................................................................................................. 12

1.2. FCC/ISED Regulatory notices ............................................................................................... 13

2 Product Concept ............................................................................................................................. 16

2.1. General Description .............................................................................................................. 16

2.2. Key Features ......................................................................................................................... 17

2.3. Functional Diagram ............................................................................................................... 19

2.4. Evaluation Board ................................................................................................................... 20

3 Application Interfaces ..................................................................................................................... 21

3.1. General Description .............................................................................................................. 21

3.2. Pin Assignment ..................................................................................................................... 22

3.3. Pin Description ...................................................................................................................... 23

3.4. Operating Modes .................................................................................................................. 30

3.5.

Power Saving ........................................................................................................................ 31

3.5.1. Sleep Mode.................................................................................................................. 31

3.5.1.1. UART Application ............................................................................................... 31

3.5.1.2. USB Application with USB Remote Wakeup Function ....................................... 32

3.5.1.3. USB Application with USB Suspend/Resume and RI Function .......................... 32

3.5.1.4. USB Application without USB Suspend Function ............................................... 33

3.5.2. Airplane Mode .............................................................................................................. 34

3.6. Power Supply ........................................................................................................................ 34

3.6.1. Power Supply Pins ....................................................................................................... 34

3.6.2. Decrease Voltage Drop ................................................................................................ 35

3.6.3. Reference Design for Power Supply ............................................................................ 36

3.6.4. Monitor the Power Supply ............................................................................................ 37

3.7. Power-on/off Scenarios ......................................................................................................... 37

3.7.1. Turn on Module Using the PWRKEY ........................................................................... 37

3.7.2. Turn off Module ............................................................................................................ 39

3.7.2.1. Turn off Module Using the PWRKEY Pin ........................................................... 39

3.7.2.2. Turn off Module Using AT Command ................................................................. 39

3.8. Reset the Module .................................................................................................................. 40

3.9. (U)SIM Interfaces .................................................................................................................. 41

3.10. USB Interface ........................................................................................................................ 44

3.11. UART Interfaces ................................................................................................................... 46

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3.12. PCM and I2C Interfaces ........................................................................................................ 48

3.13. SPI Interface ......................................................................................................................... 51

3.14. Network Status Indication ..................................................................................................... 51

3.15. STATUS ................................................................................................................................ 52

3.16. ADC Interface ....................................................................................................................... 53

3.17. Behaviors of RI ..................................................................................................................... 54

3.18. USB_BOOT Interface............................................................................................................ 55

4 GNSS Receiver ................................................................................................................................ 57

4.1. General Description .............................................................................................................. 57

4.2. GNSS Performance .............................................................................................................. 57

4.3. Layout Guidelines ................................................................................................................. 58

5 Antenna Interfaces .......................................................................................................................... 59

5.1. Main/Rx-diversityAntenna Interfaces..................................................................................... 59

5.1.1. Pin Definition ................................................................................................................ 59

5.1.2. Operating Frequency ................................................................................................... 59

5.1.3. Reference Design of RF Antenna Interface ................................................................. 60

5.1.4. Reference Design of RF Layout ................................................................................... 61

5.2. GNSS Antenna Interface ....................................................................................................... 63

5.3. Antenna Installation .............................................................................................................. 64

5.3.1. Antenna Requirement .................................................................................................. 64

5.3.2. Recommended RF Connector for Antenna Installation ................................................ 65

6 Electrical, Reliability and RadioCharacteristics ........................................................................... 67

6.1. Absolute Maximum Ratings .................................................................................................. 67

6.2. Power Supply Ratings ........................................................................................................... 67

6.3. Operation and Storage Temperatures .................................................................................. 68

6.4. Current Consumption ............................................................................................................ 69

6.5. RF Output Power .................................................................................................................. 76

6.6. RF Receiving Sensitivity ....................................................................................................... 77

6.7. Electrostatic Discharge ......................................................................................................... 79

6.8. Thermal Consideration .......................................................................................................... 79

7 Mechanical Dimensions.................................................................................................................. 82

7.1. Mechanical Dimensions of the Module.................................................................................. 82

7.2. Recommended Footprint ....................................................................................................... 84

7.3.

Design Effect Drawings of the Module .................................................................................. 85

8 Storage, Manufacturing and Packaging ........................................................................................ 86

8.1. Storage ................................................................................................................................. 86

8.2. Manufacturing and Soldering ................................................................................................ 87

8.3. Packaging ............................................................................................................................. 88

9 Appendix A References .................................................................................................................. 90

10 Appendix B GPRS Coding Schemes ............................................................................................. 94

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11 Appendix C GPRS Multi-slot Classes ............................................................................................ 95

12 Appendix D EDGE Modulation and Coding Schemes .................................................................. 97

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Table Index

TABLE 1: FREQUENCY BANDS OF EG91 SERIES MODULE ....................................................................... 16

TABLE 2: KEY FEATURES OF EG91 MODULE ............................................................................................... 17

TABLE 3: IO PARAMETERS DEFINITION ........................................................................................................ 23

TABLE 4: PIN DESCRIPTION ........................................................................................................................... 23

TABLE 5: OVERVIEW OF OPERATING MODES ............................................................................................. 30

TABLE 6: PIN DEFINITION OF VBAT AND GND ............................................................................................. 35

TABLE 7: PIN DEFINITION OF PWRKEY ........................................................................................................ 37

TABLE 8: PIN DEFINITION OF RESET_N ....................................................................................................... 40

TABLE 9: PIN DEFINITION OF (U)SIM INTERFACES ..................................................................................... 42

TABLE 10: PIN DEFINITION OF USB INTERFACE ......................................................................................... 44

TABLE 11: PIN DEFINITION OF MAIN UART INTERFACES ........................................................................... 46

TABLE 12: PIN DEFINITION OF DEBUG UART INTERFACE ......................................................................... 46

TABLE 13: LOGIC LEVELS OF DIGITAL I/O .................................................................................................... 47

TABLE 14: PIN DEFINITION OF PCM AND I2C INTERFACES ....................................................................... 50

TABLE 15: PIN DEFINITION OF SPI INTERFACE ........................................................................................... 51

TABLE 16: PIN DEFINITION OF NETWORK STATUS INDICATOR ................................................................ 52

TABLE 17: WORKING STATE OF NETWORK STATUS INDICATOR .............................................................. 52

TABLE 18: PIN DEFINITION OF STATUS ........................................................................................................ 53

TABLE 19: PIN DEFINITION OF ADC INTERFACE ......................................................................................... 53

TABLE 20: CHARACTERISTICS OF ADC INTERFACE ................................................................................... 54

TABLE 21: DEFAULT BEHAVIORS OF RI ........................................................................................................ 54

TABLE 22: PIN DEFINITION OF USB_BOOT INTERFACE ............................................................................. 55

TABLE 23: GNSS PERFORMANCE ................................................................................................................. 57

TABLE 24: PIN DEFINITION OF RF ANTENNA ............................................................................................... 59

TABLE 25: MODULE OPERATING FREQUENCIES ........................................................................................ 59

TABLE 26: PIN DEFINITION OF GNSS ANTENNA INTERFACE ..................................................................... 63

TABLE 27: GNSS FREQUENCY ....................................................................................................................... 63

TABLE 28: ANTENNA REQUIREMENTS .......................................................................................................... 64

TABLE 29: ABSOLUTE MAXIMUM RATINGS .................................................................................................. 67

TABLE 30: POWER SUPPLY RATINGS ........................................................................................................... 67

TABLE 31: OPERATION AND STORAGE TEMPERATURES .......................................................................... 68

TABLE 32: EG91-E CURRENT CONSUMPTION ............................................................................................. 69

TABLE 33: EG91-NA CURRENT CONSUMPTION ........................................................................................... 71

TABLE 34: EG91-NS CURRENT CONSUMPTION .......................................................................................... 72

TABLE 35: EG91-V CURRENT CONSUMPTION ............................................................................................. 73

TABLE 36: EG91-EC CURRENT CONSUMPTION .......................................................................................... 74

TABLE 37: GNSS CURRENT CONSUMPTION OF EG91 ............................................................................... 76

TABLE 38: RF OUTPUT POWER ..................................................................................................................... 76

TABLE 39: EG91-E CONDUCTED RF RECEIVING SENSITIVITY .................................................................. 77

TABLE 40: EG91-NA CONDUCTED RF RECEIVING SENSITIVITY ............................................................... 77

TABLE 41: EG91-NS CONDUCTED RF RECEIVING SENSITIVITY ............................................................... 78

TABLE 42: EG91-V CONDUCTED RF RECEIVING SENSITIVITY .................................................................. 78

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TABLE 43: EG91-EC CONDUCTED RF RECEIVING SENSITIVITY ............................................................... 78

TABLE 44: ELECTROSTATIC DISCHARGE CHARACTERISTICS ................................................................. 79

TABLE 45: RECOMMENDED THERMAL PROFILE PARAMETERS ............................................................... 87

TABLE 46: RELATED DOCUMENTS ................................................................................................................ 90

TABLE 47: TERMS AND ABBREVIATIONS ...................................................................................................... 90

TABLE 48: DESCRIPTION OF DIFFERENT CODING SCHEMES .................................................................. 94

TABLE 49: GPRS MULTI-SLOT CLASSES ...................................................................................................... 95

TABLE 50: EDGE MODULATION AND CODING SCHEMES ........................................................................... 97

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Figure Index

FIGURE 1: FUNCTIONAL DIAGRAM ............................................................................................................... 20

FIGURE 2: PIN ASSIGNMENT (TOP VIEW) .................................................................................................... 22

FIGURE 3: SLEEP MODE APPLICATION VIA UART ....................................................................................... 31

FIGURE 4: SLEEP MODE APPLICATION WITH USB REMOTE WAKEUP .................................................... 32

FIGURE 5: SLEEP MODE APPLICATION WITH RI ......................................................................................... 33

FIGURE 6: SLEEP MODE APPLICATION WITHOUT SUSPEND FUNCTION ................................................ 34

FIGURE 7: POWER SUPPLY LIMITS DURING BURST TRANSMISSION ...................................................... 35

FIGURE 8: STAR STRUCTURE OF THE POWER SUPPLY ............................................................................ 36

FIGURE 9: REFERENCE CIRCUIT OF POWER SUPPLY .............................................................................. 36

FIGURE 10: TURN ON THE MODULE USING DRIVING CIRCUIT ................................................................. 37

FIGURE 11: TURN ON THE MODULE USING BUTTON ................................................................................. 38

FIGURE 12: POWER-ON SCENARIO .............................................................................................................. 38

FIGURE 13: POWER-OFF SCENARIO ............................................................................................................ 39

FIGURE 14: REFERENCE CIRCUIT OF RESET_N BY USING DRIVING CIRCUIT ...................................... 40

FIGURE 15: REFERENCE CIRCUIT OF RESET_N BY USING BUTTON ...................................................... 41

FIGURE 16: RESET SCENARIO ...................................................................................................................... 41

FIGURE 17: REFERENCE CIRCUIT OF (U)SIM INTERFACE WITH AN 8-PIN (U)SIM CARD CONNECTOR

................................................................................................................................................................... 43

FIGURE 18: REFERENCE CIRCUIT OF (U)SIM INTERFACE WITH A 6-PIN (U)SIM CARD CONNECTOR . 43

FIGURE 19: REFERENCE CIRCUIT OF USB INTERFACE ............................................................................ 45

FIGURE 20: REFERENCE CIRCUIT WITH TRANSLATOR CHIP ................................................................... 47

FIGURE 21: REFERENCE CIRCUIT WITH TRANSISTOR CIRCUIT .............................................................. 48

FIGURE 22: PRIMARY MODE TIMING ............................................................................................................ 49

FIGURE 23: AUXILIARY MODE TIMING .......................................................................................................... 49

FIGURE 24: REFERENCE CIRCUIT OF PCM APPLICATION WITH AUDIO CODEC .................................... 50

FIGURE 25: REFERENCE CIRCUIT OF SPI INTERFACE WITH PERIPHERALS ......................................... 51

FIGURE 26: REFERENCE CIRCUIT OF NETWORK STATUS INDICATOR ................................................... 52

FIGURE 27: REFERENCE CIRCUIT OF STATUS ........................................................................................... 53

FIGURE 28: REFERENCE CIRCUIT OF USB_BOOT INTERFACE ................................................................ 55

FIGURE 29: TIMING SEQUENCE FOR ENTERING INTO EMERGENCY DOWNLOAD MODE .................... 56

FIGURE 30: REFERENCE CIRCUIT OF RF ANTENNA INTERFACE ............................................................. 61

FIGURE 31: MICROSTRIP LINE DESIGN ON A 2-LAYER PCB ...................................................................... 62

FIGURE 32: COPLANAR WAVEGUIDE DESIGN ON A 2-LAYER PCB ........................................................... 62

FIGURE 33: COPLANAR WAVEGUIDE DESIGN ON A 4-LAYER PCB (LAYER 3 AS REFERENCE GROUND)

................................................................................................................................................................... 62

FIGURE 34: COPLANAR WAVEGUIDE DESIGN ON A 4-LAYER PCB (LAYER 4 AS REFERENCE GROUND)

................................................................................................................................................................... 62

FIGURE 35: REFERENCE CIRCUIT OF GNSS ANTENNA ............................................................................. 64

FIGURE 36: DIMENSIONS OF THE U.FL-R-SMT CONNECTOR (UNIT: MM) ................................................ 65

FIGURE 37: MECHANICALS OF U.FL-LP CONNECTORS ............................................................................. 66

FIGURE 38: SPACE FACTOR OF MATED CONNECTOR (UNIT: MM) ........................................................... 66



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FIGURE 39: REFERENCED HEATSINK DESIGN (HEATSINK AT THE TOP OF THE MODULE) .................. 80

FIGURE 40: REFERENCED HEATSINK DESIGN (HEATSINK AT THE BACKSIDE OF CUSTOMERS’ PCB)

................................................................................................................................................................... 81

FIGURE 41: MODULE TOP AND SIDE DIMENSIONS ..................................................................................... 82

FIGURE 42: MODULE BOTTOM DIMENSIONS (TOP VIEW) ......................................................................... 83

FIGURE 43: RECOMMENDED FOOTPRINT (TOP VIEW) .............................................................................. 84

FIGURE 44: TOP VIEW OF THE MODULE ...................................................................................................... 85

FIGURE 45: BOTTOM VIEW OF THE MODULE .............................................................................................. 85

FIGURE 46: REFLOW SOLDERING THERMAL PROFILE .............................................................................. 87

FIGURE 47: TAPE DIMENSIONS ..................................................................................................................... 88

FIGURE 48: REEL DIMENSIONS ..................................................................................................................... 89

FIGURE 49: TAPE AND REEL DIRECTIONS ................................................................................................... 89



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1 Introduction

This document defines the EG91module and describes its air interface and hardware interface which are

connected with customers’ applications.

This document can help customers quickly understand module interface specifications, electrical

andmechanical details, as well as other related information of EG91 module. Associated with application

note and user guide, customers can use EG91 module to design and set up mobile applications easily.

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1.1. Safety Information

The following safety precautions must be observed during all phases of operation, such as usage, service

or repair of any cellular terminal or mobile incorporating EG91module. Manufacturers of the cellular terminal

should send the following safety information to users and operating personnel, and incorporate these

guidelines into all manuals supplied with the product. If not so, Quectel assumes no liability for customers’

failure to comply with these precautions.

Full attention must be given to driving at all times in order to reduce the risk of an

accident. Using a mobile while driving (even with a handsfree kit) causes

distraction and can lead to an accident. Please comply with laws and regulations

restricting the use of wireless devices while driving.

Switch off the cellular terminal or mobile before boarding an aircraft. The operation

of wireless appliances in an aircraft is forbidden to prevent interference with

communication systems. If the device offers an Airplane Mode, then it should be

enabled prior to boarding an aircraft. Please consult the airline staff for more

restrictions on the use of wireless devices on boarding the aircraft.

Wireless devices may cause interference on sensitive medical equipment, so

please be aware of the restrictions on the use of wireless devices when in

hospitals,clinics or other healthcare facilities.

Cellular terminals or mobiles operating over radio signals and cellular network

cannot be guaranteed to connect in all possible conditions (for example, with

unpaid bills or with an invalid (U)SIM card). When emergent help is needed in such

conditions, please remember using emergency call. In order to make or receive a

call, the cellular terminal or mobile must be switched on in a service area with

adequate cellular signal strength.

The cellular terminal or mobile contains a transmitter and receiver. When it is ON, it

receives and transmits radio frequency signals. RF interference can occur if it is

used close to TV set, radio, computer or other electric equipment.

In locations with potentially explosive atmospheres, obey all posted signs to turn

off wireless devices such as your phone or other cellular terminals. Areas with

potentially explosive atmospheres include fuelling areas, below decks on boats,

fuel or chemical transfer or storage facilities, areas where the air contains

chemicals or particles such as grain, dust or metal powders, etc.

EG91_Hardware_Design 12 / 93

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1.2. FCC/ISED Regulatory notices

Modification statement Quectel has not approved any changes or modifications to this device by the user. Any changes or modifications could void the user’s authority to operate the equipment. Quectel n’approuve aucune modification apportée à l’appareil par l’utilisateur, quelle qu’en soit la nature. Tout changement ou modification peuvent annuler le droit d’utilisation de l’appareil par l’utilisateur. Interference statement This device complies with Part 15 of the FCC Rules and Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

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 : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

RF exposure

This equipment complies with FCC and ISED radiation exposure limits set forth for an uncontrolled environment. The

antenna should be installed and operated with minimum distance of 20 cm between the radiator and your body. Antenna

gain must be below:

Antenna Gain

❒ WCDAM II:≤9.000dBi ❒ WCDAM V:≤6.000dBi

❒ WCDAM VIII:≤10.416dBi

❒ LTE Band2:≤8.500dBi ❒ LTE Band4:≤5.500dBi ❒ LTE Band5:≤9.916dBi ❒ LTE Band12:≤9.234dBi ❒ LTE Band13:≤9.673dBi ❒ L TE Band25:≤8.500dBi

❒ L TE Band25:≤9.837dBi

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

The host end product must include a user manual that clearly defines operating requirements and conditions that must be

observed to ensure compliance with current FCC RF exposure guidelines.

For portable devices, in addition to above, a separate approval is required to satisfy the SAR requirements of FCC Part

2.1093.

If the device is used for other equipment that separate approval is required for all other operating configurations, including

portable configurations with respect to 2.1093 and different antenna configurations.

Cet appareil est conforme aux limites d'exposition aux rayonnements de l’ISED pour un environnement non contrôlé. L'antenne doit être installé de façon à garder une distance minimale de 20 centimètres entre la source de rayonnements et votre corps. Gain de l'antenne doit être ci-dessous:

Gain de l‘antenne

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❒ WCDAM II:≤9.00dBi ❒ WCDAM V:≤6.00dBi

❒ WCDAM VIII:≤7.15dBi

❒ LTE Band2:≤8.50dBi ❒ LTE Band4:≤5.50dBi ❒ LTE Band5:≤6.64dBi ❒ LTE Band12:≤6.15dBi ❒ LTE Band13:≤6.44dBi ❒ L TE Band25:≤8.50dBi

❒ L TE Band25:≤6.63dBi

L'émetteur ne doit pas être colocalisé ni fonctionner conjointement avec à autre antenne ou autre émetteur.

FCC Class B digital device notice This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help. Labelling Requirements for the Host device

The host device shall be properly labelled to identify the modules within the host device. The certification label of the

module shall be clearly visible at all times when installed in the host device, otherwise the host device must be labelled to

display the FCC ID and ISED of the module, preceded by the words "Contains transmitter module", or the word "Contains",

or similar wording expressing the same meaning, as follows:

Contains FCC ID：XMR201903EG91NS

Contains IC: 10224A-20193EG91NS

The host OEM user manual must also contain clear instructions on how end users can find and/or access the module and

the FCC ID and ISED.

L'appareil hôte doit être étiqueté comme il faut pour permettre l'identification des modules qui s'y trouvent. L'étiquette de certification du module donné doit être posée sur l'appareil hôte à un endroit bien en vue en tout temps. En l'absence d'étiquette, l'appareil hôte doit porter une étiquette donnant le FCC ID et l’ISED du module, précédé des mots « Contient un module d'émission », du mot « Contient » ou d'une formulation similaire exprimant le même sens, comme suit :

Contient FCC ID：XMR201903EG91NS

Contient IC: 10224A-20193EG91NS

Le manuel d'utilisation OEM de l'hôte doit également contenir des instructions claires sur la manière dont les utilisateurs

finaux peuvent trouver et / ou accéder au module et à l'ID FCC et l’ISED.

EG91_Hardware_Design 14 / 93

LTE Module Series

EG91 Hardware Design

CAN ICES-3 (B) / NMB-3 (B) This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de classe B est conforme à la norme canadienne ICES-003.

Installation Guidance

The final host / module combination may also need to be evaluated against the FCC Part 15B criteria for unintentional

radiators in order to be properly authorized for operation as a Part 15 digital device.

The user’s manual or instruction manual for an intentional or unintentional radiator shall caution the user that changes or

modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the

equipment. In cases where the manual is provided only in a form other than paper, such as on a computer disk or over the

Internet, the information required by this section may be included in the manual in that alternative form, provided the user

can reasonably be expected to have the capability to access information in that form.

To ensure compliance with all non-transmitter functions the host manufacturer is responsible for ensuring compliance with

the module(s) installed and fully operational. For example, if a host was previously authorized as an unintentional radiator

under the Declaration of Conformity procedure without a transmitter certified module and a module is added, the host

manufacturer is responsible for ensuring that the after the module is installed and operational the host continues to be

compliant with the Part 15B unintentional radiator requirements.

EG91_Hardware_Design 15 / 93

LTE Module Series

EG91 Hardware Design

2 Product Concept

2.1. General Description

EG91module is an embedded 4G wireless communication module with receive diversity. It

supportsLTE-FDD/WCDMA/GSM wireless communication, andprovides data connectivity on

LTE-FDD,DC-HSDPA, HSPA+, HSDPA, HSUPA, WCDMA,EDGE andGPRSnetworks. It can also provide

voice functionality

frequency bands of EG91series module.

to meet customers’ specific application demands. The following table shows the

Table 1: Frequency Bands of EG91Series Module

Module

EG91-E

EG91-NA FDD: B2/B4/B5/B12/B13 B2/B4/B5 Not supported

EG91-NS

EG91-V FDD: B4/B13 Not supported Not supported

EG91-EC

LTE Bands (with Rx-diversity)

FDD:

B1/B3/B7/B8/B20/B28A

FDD:

B2/B4/B5/B12/B13/B25/

B26

FDD:

B1/B3/B7/B8/B20/B28

WCDMA (with Rx-diversity)

B1/B8 900/1800MHz Not supported

B2/B4/B5 Not supported

B1/B8 900/1800MHz

GSM GNSS2)

GPS, GLONASS,

BeiDou/Compass,G

alileo, QZSS

GPS, GLONASS,

BeiDou/Compass,

Galileo, QZSS

GPS, GLONASS,

BeiDou/Compass,

Galileo, QZSS

GPS, GLONASS,

BeiDou/Compass,

Galileo, QZSS

NOTES

EG91contains Telematicsversion and Data-only version. Telematics version supports voice and

datafunctions, while Data-only version only supports data function.

GNSS function is optional.

EG91_Hardware_Design 16 / 93

LTE Module Series

EG91 Hardware Design

With a compact profile of 29.0mm ×25.0mm ×2.3mm, EG91 can meet almost all requirements for M2M

applications such as automotive, smart metering, tracking system, security, router, wireless POS, mobile

computing device, PDA phone, tablet PC, etc.

EG91 is an SMD type module which can be embedded into applications through its 106 LGA pads.

EG91 is integrated with internet service protocols like TCP, UDP and PPP. Extended AT commands have

been developed for customers to use these internet service protocols easily.

2.2. Key Features

The following table describes the detailed features of EG91 module.

Table 2: Key Features of EG91 Module

Feature Details

Power Supply

Supply voltage: 3.3V~4.3V

Typical supply voltage: 3.8V

Class 4 (33dBm±2dB) for EGSM900

Class 1 (30dBm±2dB) for DCS1800

Transmitting Power

Class E2 (27dBm±3dB) for EGSM900 8-PSK

Class E2 (26dBm±3dB) for DCS1800 8-PSK

Class 3 (24dBm+1/-3dB) for WCDMA bands

Class 3 (23dBm±2dB) for LTE-FDD bands

Support up to non-CA Cat 1 FDD

LTE Features

Support 1.4MHz~20MHz RF bandwidth

Support MIMO in DL direction

LTE-FDD: Max 10Mbps (DL), Max 5Mbps (UL)

Support 3GPP R8 DC-HSDPA, HSPA+, HSDPA, HSUPA and WCDMA

Support QPSK, 16-QAM and 64-QAM modulation

UMTS Features

DC-HSDPA: Max 42Mbps (DL)

HSUPA: Max 5.76Mbps (UL)

WCDMA: Max 384Kbps (DL), Max 384Kbps (UL)

R99:

CSD: 9.6kbps

GPRS:

GSMFeatures

Support GPRS multi-slot class 33(33 by default)

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

Max 107Kbps (DL), Max 85.6Kbps (UL)

EDGE:

EG91_Hardware_Design 17 / 93

EG91 Hardware Design

Internet Protocol Features

SMS

LTE Module Series

Support EDGE multi-slot class 33(33 by default)

Support GMSK and 8-PSK for different MCS (Modulation and Coding

Scheme)

Downlink coding schemes: CS 1-4 and MCS 1-9

Uplink coding schemes: CS 1-4 and MCS 1-9

Max 296Kbps (DL)/Max 236.8Kbps (UL)

SupportTCP/UDP/PPP/FTP/HTTP/NTP/PING/QMI/NITZ/CMUX*/HTTPS*/

SMTP*/MMS*/FTPS*/SMTPS*/SSL*/FILE* protocols

Support PAP (Password Authentication Protocol) and CHAP (Challenge

Handshake Authentication Protocol) protocols which are usually used for

PPP connections

Text and PDU modes

Point-to-point MO and MT

SMS cell broadcast

SMS storage: ME by default

(U)SIMInterfaces Support 1.8V and 3.0V (U)SIM cards

Support one digital audio interface: PCM interface

GSM: HR/FR/EFR/AMR/AMR-WB

Audio Features

WCDMA: AMR/AMR-WB

LTE: AMR/AMR-WB

Support echo cancellation and noise suppression

Used for audio function with external codec

Support 16-bit linear data format

PCM Interface

Support long frame synchronization and short frame synchronization

Support master and slave mode, but must be the master in long frame

synchronization

Compliant with USB 2.0 specification (slave only);the data transfer rate can

reach up to 480Mbps

Used for AT command communication, data transmission,GNSS NMEA

USB Interface

sentences output, software debugging, firmware upgrade and voice over

USB*

Support USB serial drivers for: Windows 7/8/8.1/10, Windows CE

5.0/6.0/7.0*, Linux 2.6/3.x/4.1~4.14, Android 4.x/5.x/6.x/7.x/8.x, etc.

Main UART:

Used for AT command communication and data transmission

Baud rates reach up to 921600bps, 115200bps by default

UART Interface

Support RTS and CTS hardware flow control

Debug UART:

Used for Linux console and log output

115200bps baud rate

Rx-diversity Support LTE/WCDMA Rx-diversity

GNSS Features Gen8C Lite of Qualcomm

EG91_Hardware_Design 18 / 93

LTE Module Series

EG91 Hardware Design

Protocol: NMEA 0183

AT Commands

Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT

commands

Network Indication NETLIGHTpin for network activitystatusindication

Antenna Interfaces

Including main antenna interface (ANT_MAIN), Rx-diversity antenna

(ANT_DIV) interface and GNSS antenna interface(ANT_GNSS)

Size: (29.0±0.15)mm × (25.0±0.15)mm × (2.3±0.2)mm

Physical Characteristics

Package: LGA

Weight: approx. 3.8g

Temperature Range

Operation temperature range: -35°C ~ +75°C

Extended temperature range: -40°C ~ +85°C

Storage temperature range: -40°C ~ +90°C

Firmware Upgrade USB interface orDFOTA*

RoHS All hardware components are fully compliant with EU RoHS directive

NOTES

1. 1)GNSS antenna interface is only supported on EG91-NA/-NS/-V/-EC.

2. 2) Within operationtemperature range, the module is 3GPP compliant.

3. 3) Within extended temperature range, the module remains the ability to establish and maintain a

voice, SMS, data transmission, emergency call, etc. There is no unrecoverable malfunction. There

are also no effects on radio spectrum and no harm to radio network. Only one or more parameters

like P

might reduce in their value and exceed the specified tolerances. When the temperature

out

returns to normal operationtemperature levels, the module will meet 3GPP specificationsagain.

4. “*” means under development.

2.3. Functional Diagram

The following figure shows a block diagram of EG91 and illustrates the major functional parts.

 Power management

 Baseband

 DDR+NAND flash

 Radio frequency

 Peripheral interfaces

EG91_Hardware_Design 19 / 93

LTE Module Series

EG91 Hardware Design

VBAT_RF

VBAT_BB

PWRKEY

RESET_N

STATUS

PMIC

Control

ANT_MAIN ANT_DIV

PAM

Duplexer

PRx DRx

ANT_GNSS

GPS

SAW

LNA

SAW

Transceiver

IQ C ontrol

Baseband

Switch

SAW

NAND DDR2

SDRAM

19.2M XO

VDD_EXT

(U)SIM1

USB PCM UARTI2C

(U)SIM2

SPI

GPIOs

Figure 1: Functional Diagram

NOTE

GNSS antenna interface is only supported on EG91-NA/-NS/-V/-EC.

2.4. Evaluation Board

Quectel provides a complete set of evaluation tools to facilitate the use and testing ofEG91 module. The

evaluation tool kit includes the evaluation board (UMTS<E EVB), USB data cable, earphone, antenna

and other peripherals.

EG91_Hardware_Design 20 / 93

LTE Module Series

EG91 Hardware Design

3 Application Interfaces

3.1. General Description

EG91is equipped with 62-pin 1.1mm pitch SMT pads plus 44-pin ground/reserved pads that can be

connected to customers’ cellular application platforms. Sub-interfaces included in these pads are

described in detail in the following chapters:

 Power supply

 (U)SIMinterfaces

 USB interface

 UART interfaces

 PCMand I2C interfaces

 SPI interface

 Statusindication

 USB_BOOT interface

EG91_Hardware_Design 21 / 93

EG91 Hardware Design

3.2. Pin Assignment

The following figure shows the pin assignment of EG91 module.

RESERVED (Pin 49 on EG91-E)

ANT_DIV (EG91-NA/-NS/-V/-EC)

LTE Module Series

GND

PCM _C LK

PCM _SY N C

PCM _D IN

PCM_DOUT

USB_VBUS

USB_DP

USB_DM

PW RKEY

RESET_N

RESERVED

ANT _M AIN

GND

103

GND

82 81

80 79

10 2 10 1

USIM2_PRESENCE

USIM2_CLK

10 0

USIM2_RST

USIM2_DATA

USIM2_VDD

89 90

91 92

104

VB AT_ RF

GND

USB_BOOT

106

ANT_GNSS (EG91-NA/-NS/-V/-EC) ANT _DI V (EG 91-E)

GND

USIM_GND

USIM1_CLK

USIM1_DATA

USIM1_RST

USIM1_VDD

USIM1_PRESENCE

I2C_SDA

I2C_SCL

DCD

RTS

CTS

TXD

RXD

VB AT_ BB

105

DBG_RXD

PCM

ADC 0

DBG_TXD

RESERVED

SP I

PO WER USB UART

AP _R EAD Y

(U)SIM

ST ATU S

NETLIGHT

Figure 2:Pin Assignment (Top View)

EG91_Hardware_Design 22 / 93

DTR

GND

SP I_C LK

SP I_ MOSI

VDD _EX T

SP I_ MIS O

ANT

GND

RESERVED

OTHE RS

LTE Module Series

EG91 Hardware Design

NOTES

1. 1)PWRKEY output voltage is 0.8V because of the diode drop in the Qualcomm chipset.

2. Keep all RESERVEDpins and unused pins unconnected.

3. GND pads should be connected to ground in the design.

4. Definition of pin 49 and 56 are different amongEG91-E/-NS/-V/-EC and EG91-NA.For more details,

please refer to Table 4.

3.3. Pin Description

The following tables show the pin definition and description of EG91.

Table 3: IO Parameters Definition

Type Description

AI Analog input

AO Analog output

DI Digital input

DO Digital output

IO Bidirectional

OD Open drain

PI Power input

PO Power output

Table 4: Pin Description

Power Supply

Pin Name Pin No. I/O Description

Power supply for

VBAT_BB 32, 33 PI

module’s baseband

part

EG91_Hardware_Design 23 / 93

DC Characteristics

Vmax=4.3V

Vmin=3.3V

Vnorm=3.8V

Comment

It must be able to

provide sufficient

current up to 0.8A.

LTE Module Series

EG91 Hardware Design

It must be able to

provide sufficient

current up to 1.8A in a

burst transmission.

VBAT_RF 52, 53 PI

Power supply for

module’s RF part

Vmax=4.3V

Vmin=3.3V

Vnorm=3.8V

Power supply for

VDD_EXT 29 PO

Provide 1.8V for

external circuit

Vnorm=1.8V

max=50mA

external GPIO’s pull up

circuits.

If unused, keep it open.

3, 31, 48,

50, 54, 55,

58, 59, 61,

GND

62, 67~74,

Ground

79~82,

89~91,

100~106

Turn-on/off

Pin Name Pin No. I/O Description DC Characteristics Comment

The output voltage is

0.8V because of the

diode drop in the

Qualcomm chipset.

PWRKEY 15 DI

Turn on/off the

module

max=2.1V

min=1.3V

max=0.5V

Pull-up to 1.8V

RESET_N 17 DI

Reset signal of the

module

max=2.1V

min=1.3V

max=0.5V

internally.

Activelow.

If unused,keep it

open.

Status Indication

Pin Name Pin No. I/O Description DC Characteristics Comment

1.8V power domain.

If unused, keep it

open.

1.8V power domain.

If unused, keep it

open.

STATUS 20 DO

NETLIGHT 21 DO

Indicate the

module’s operating

status

Indicate the

module’s network

activity status

min=1.35V

max=0.45V

min=1.35V

max=0.45V

USB Interface

Pin Name Pin No. I/O Description DC Characteristics Comment

USB_VBUS 8 PI

USB connection

detection

Vmax=5.25V

Vmin=3.0V

Vnorm=5.0V

Typical:5.0V

If unused,keep it

open.

EG91_Hardware_Design 24 / 93

LTE Module Series

EG91 Hardware Design

USB_DP 9 IO

USB_DM 10 IO

USB differential

data bus (+)

USB differential

data bus (-)

Compliant with USB

2.0 standard

specification.

Compliant with USB

2.0 standard

specification.

Require differential

impedance of 90Ω.

Require differential

impedance of 90Ω.

(U)SIM Interfaces

Pin Name Pin No. I/O Description DC Characteristics Comment

Connect to ground of

(U)SIM card

connector.

USIM_GND 47

Specified ground

for (U)SIM card

For 1.8V (U)SIM:

Vmax=1.9V

Vmin=1.7V

USIM1_VDD 43 PO

Power supply for

(U)SIMcard

For 3.0V (U)SIM:

Vmax=3.05V

Either 1.8V or 3.0V is

supported by the

module automatically.

Vmin=2.7V

max=50mA

For 1.8V (U)SIM:

max=0.6V

min=1.2V

max=0.45V

min=1.35V

For 3.0V (U)SIM:

max=1.0V

min=1.95V

max=0.45V

min=2.55V

USIM1_DATA 45 IO

Data signal of

(U)SIMcard

For 1.8V (U)SIM:

max=0.45V

min=1.35V

For 3.0V (U)SIM:

max=0.45V

min=2.55V

USIM1_CLK 46 DO

Clock signal of

(U)SIMcard

EG91_Hardware_Design 25 / 93

EG91 Hardware Design

USIM1_RST 44 DO

USIM1_

PRESENCE

42 DI

USIM2_VDD 87 PO

USIM2_DATA 86 IO

USIM2_CLK 84 DO

USIM2_RST 85 DO

Reset signal of

(U)SIMcard

insertion detection

Power supply for

(U)SIMcard

Data signal of

(U)SIMcard

Clock signal of

(U)SIMcard

Reset signal of

(U)SIMcard

For 1.8V (U)SIM:

max=0.45V

min=1.35V

For 3.0V (U)SIM:

max=0.45V

min=2.55V

min=-0.3V

max=0.6V

min=1.2V

max=2.0V

For 1.8V (U)SIM:

Vmax=1.9V

Vmin=1.7V

For 3.0V (U)SIM:

Vmax=3.05V

Vmin=2.7V

max=50mA

For 1.8V (U)SIM:

max=0.6V

min=1.2V

max=0.45V

min=1.35V

For 3.0V (U)SIM:

max=1.0V

min=1.95V

max=0.45V

min=2.55V

For 1.8V (U)SIM:

max=0.45V

min=1.35V

For 3.0V (U)SIM:

max=0.45V

min=2.55V

For 1.8V (U)SIM:

max=0.45V

min=1.35V

For 3.0V (U)SIM:

max=0.45V

LTE Module Series

1.8V power domain.

If unused, keep it

open.

Either 1.8V or 3.0V is

supported by the

module automatically.

EG91_Hardware_Design 26 / 93

LTE Module Series

EG91 Hardware Design

VOHmin=2.55V

min=-0.3V

USIM2_

PRESENCE

83 DI

(U)SIMcard

insertion detection

max=0.6V

min=1.2V

max=2.0V

1.8V power domain.

If unused, keep it

open.

Main UART Interface

Pin Name Pin No. I/O Description DC Characteristics Comment

RI 39 DO Ring indicator

DCD 38 DO

Data carrier

detection

CTS 36 DO Clear to send

RTS 37 DI Request to send

Data terminal

DTR 30 DI

ready. Sleep mode

control.

min=-0.3V

max=0.6V

min=1.2V

max=2.0V

min=-0.3V

max=0.6V

min=1.2V

max=2.0V

max=0.45V

min=1.35V

max=0.45V

min=1.35V

max=0.45V

min=1.35V

1.8V power domain.

If unused, keep it

open.

1.8V power domain.

If unused, keep it

open.

1.8V power domain.

If unused, keep it

open.

1.8V power domain.

If unused, keep it

open.

1.8V power domain.

Pull-up by default.

Low level wakes up

the module.

If unused, keep it

open.

TXD 35 DO Transmit data

RXD 34 DI Receive data

max=0.45V

min=1.35V

min=-0.3V

max=0.6V

min=1.2V

max=2.0V

1.8V power domain.

If unused, keep it

open.

1.8V power domain.

If unused, keep it

open.

Debug UART Interface

Pin Name Pin No. I/O Description DC Characteristics Comment

DBG_TXD 23 DO Transmit data

max=0.45V

min=1.35V

1.8V power domain.

If unused, keep it

EG91_Hardware_Design 27 / 93

LTE Module Series

EG91 Hardware Design

open.

min=-0.3V

DBG_RXD 22 DI Receive data

max=0.6V

min=1.2V

max=2.0V

1.8V power domain.

If unused, keep it

open.

PCM Interface

Pin Name Pin No. I/O Description DC Characteristics Comment

min=-0.3V

PCM_DIN 6 DI PCM data input

PCM_

DOUT

7 DO PCM data output

max=0.6V

min=1.2V

max=2.0V

max=0.45V

min=1.35V

1.8V power domain.

If unused, keep it

open.

1.8V power domain.

If unused, keep it

open.

1.8V power domain.

In master mode, it is

an output signal. In

slave mode, it is an

input signal.

If unused, keep it

open.

1.8V power domain.

In master mode, it is

an output signal. In

slave mode, it is an

input signal.

If unused, keep it

open.

PCM data frame

PCM_SYNC 5 IO

synchronization

signal

PCM_CLK 4 IO PCM clock

max=0.45V

min=1.35V

min=-0.3V

max=0.6V

min=1.2V

max=2.0V

max=0.45V

min=1.35V

min=-0.3V

max=0.6V

min=1.2V

max=2.0V

I2C Interface

Pin Name Pin No. I/O Description DC Characteristics Comment

An external pull-up

I2C_SCL 40 OD

I2C serial clock.

Used for external

codec

resistor is required.

1.8V only.

If unused, keep it

open.

I2C serial data.

I2C_SDA 41 OD

Used for external

codec

EG91_Hardware_Design 28 / 93

An external pull-up

resistor is required.

1.8V only.

If unused, keep it

open.

LTE Module Series

EG91 Hardware Design

ADC Interface

Pin Name Pin No. I/O Description DC Characteristics Comment

ADC0 24 AI

General purpose

analog to digital

converter

Voltage range:

0.3V to VBAT_BB

If unused, keep it

open.

SPI Interface

Pin Name Pin No. I/O Description DC Characteristics Comment

1.8V power domain.

If unused, keep it

open.

1.8V power domain.

If unused, keep it

open.

1.8V power domain.

If unused, keep it

open.

SPI_CLK 26 DO

SPI_MOSI 27 DO

SPI_MISO 28 DI

Clock signal of SPI

interface

Master output slave

input of SPI

interface

Master input slave

output of SPI

interface

max=0.45V

min=1.35V

max=0.45V

min=1.35V

min=-0.3V

max=0.6V

min=1.2V

max=2.0V

RF Interfaces

Pin Name Pin No. I/O Description DC Characteristics Comment

50Ω impedance.

If unused, keep it

open.

The pin is defined as

ANT_DIV on

ANT_GNSS

(EG91-N

A/-NS/

-V/-EC)

AI GNSS antenna pad

EG91-E.

ANT_DIV

(EG91-E

)

(EG91-

NA/-NS/

Receive diversity

antenna pad

50Ω impedance.

If unused, keep it

open.

The pin is reserved on

EG91-E.

-V/-EC)

50Ω impedance.

ANT_MAIN 60 IO Main antenna pad

If unused, keep it

open.

Other Pins

Pin Name Pin No. I/O Description DC Characteristics Comment

EG91_Hardware_Design 29 / 93

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