Telit Communications S p A UE910GL Users Guide

UE910 Hardware User Guide

1VV0301012 Rev.10.9 –

2016-12-16

DRAFT

Applicability Table

PRODUCT

UE910-EUR

UE910-EUD

UE910-NAR

UE910-NAD

UE910-GL

DRAFT

UE910 Hardware User Guide

1VV0301012 Rev.10.9 – 2016-12-16

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 2 of 93

DISCLAIMER

DRAFT

The information contained in this document is the proprietary information of Telit

Communications S.p.A. and its affiliates (“TELIT”). The contents are confidential and any

disclosure to persons other than the officers, employees, agents or subcontractors of the owner
or licensee of this document, without the prior written consent of Telit, is strictly prohibited.

Telit makes every effort to ensure the quality of the information it makes available.
Notwithstanding the foregoing, Telit 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.

Telit disclaims any and all responsibility for the application of the devices characterized in this
document, and notes that the application of the device must comply with the safety standards of
the applicable country, and where applicable, with the relevant wiring rules.

Telit reserves the right to make modifications, additions and deletions to this document due to
typographical errors, inaccurate information, or improvements to programs and/or equipment at
any time and without notice. Such changes will, nevertheless be incorporated into new editions
of this application note.

All rights reserved.

© 2013 Telit Communications S.p.A.

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 3 of 93

Contents

DRAFT

1 INTRODUCTION ......................................................................................................................................................... 6

1.1 SCOPE ................................................................................................................................................................................ 6

1.2 AUDIENCE ........................................................................................................................................................................... 6

1.3 CONTACT INFORMATION, SUPPORT .......................................................................................................................................... 6

1.4 DOCUMENT ORGANIZATION ................................................................................................................................................... 7

1.5 TEXT CONVENTIONS .............................................................................................................................................................. 8

1.6 RELATED DOCUMENTS ........................................................................................................................................................... 8

1.7 DOCUMENT HISTORY ............................................................................................................................................................ 9

2 OVERVIEW .............................................................................................................................................................. 10

3 UE910 MODULE CONNECTIONS ............................................................................................................................... 11

3.1 PIN-OUT ......................................................................................................................................................................... 11

3.1.1 LGA Pads Layout ..................................................................................................................................................... 17

4 HARDWARE COMMANDS ........................................................................................................................................ 18

4.1 TURNING ON THE UE910 ................................................................................................................................................... 18

4.2 TURNING OFF THE UE910 .................................................................................................................................................. 25

4.3 UE910 UNCONDITIONAL SHUTDOWN .................................................................................................................................... 28

5 POWER SUPPLY ....................................................................................................................................................... 31

5.1 POWER SUPPLY REQUIREMENTS ............................................................................................................................................ 31

5.2 POWER CONSUMPTION ....................................................................................................................................................... 32

5.3 GENERAL DESIGN RULES ...................................................................................................................................................... 33

5.3.1 Electrical Design Guidelines ................................................................................................................................... 33

5.3.2 Thermal Design Guidelines ..................................................................................................................................... 37

5.3.3 Power Supply PCB layout Guidelines ...................................................................................................................... 38

6 GSM/WCDMA RADIO SECTION ............................................................................................................................... 40

6.1 UE910 PRODUCT VARIANTS ................................................................................................................................................ 40

6.2 TX OUTPUT POWER ............................................................................................................................................................ 40

SENSITIVITY ............................................................................................................................................................................. 43

6.3 GSM/WCDMA ANTENNA REQUIREMENTS ............................................................................................................................ 43

6.4 GSM/WCDMA - PCB LINE GUIDELINES ................................................................................................................................ 45

6.5 PCB GUIDELINES IN CASE OF FCC CERTIFICATION ...................................................................................................................... 47

6.5.1 Transmission line design ........................................................................................................................................ 47

6.5.2 Transmission line measurements ........................................................................................................................... 48

6.6 ANTENNA - INSTALLATION GUIDELINES ................................................................................................................................... 50

7 LOGIC LEVEL SPECIFICATIONS .................................................................................................................................. 51

7.1 UNCONDITIONAL SHUTDOWN ............................................................................................................................................... 52

8 USB PORT ................................................................................................................................................................ 53

8.1 USB 2.0 HS ...................................................................................................................................................................... 53

9 SPI PORT ................................................................................................................................................................. 54

9.1 SPI CONNECTIONS .............................................................................................................................................................. 54

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 4 of 93

10 USB HSIC ................................................................................................................................................................. 55

DRAFT

11 SERIAL PORTS .......................................................................................................................................................... 56

11.1 MODEM SERIAL PORT 1 (USIF0) ................................................................................................................................... 57

11.2 MODEM SERIAL PORT 2 (USIF1) ................................................................................................................................... 59

11.3 RS232 LEVEL TRANSLATION ................................................................................................................................................ 60

12 AUDIO SECTION OVERVIEW .................................................................................................................................... 62

12.1 ANALOG VOICE INTERFACE ................................................................................................................................................. 62

12.1.1 MIC connection .................................................................................................................................................... 63

12.1.2 LINE IN Connection ............................................................................................................................................... 65

12.1.3 EAR Connection .................................................................................................................................................... 66

12.2 DIGITAL VOICE INTERFACE .................................................................................................................................................. 67

12.2.1 Electrical Characteristics ...................................................................................................................................... 67

12.2.2 CODEC Examples .................................................................................................................................................. 67

13 GENERAL PURPOSE I/O ........................................................................................................................................... 68

13.1 GPIO LOGIC LEVELS .......................................................................................................................................................... 69

13.2 USING A GPIO PAD AS INPUT ........................................................................................................................................... 70

13.3 USING A GPIO PAD AS OUTPUT ........................................................................................................................................ 70

13.4 INDICATION OF NETWORK SERVICE AVAILABILITY ..................................................................................................................... 71

13.5 RTC BYPASS OUT ............................................................................................................................................................. 72

13.6 EXTERNAL SIM HOLDER IMPLEMENTATION ........................................................................................................................... 72

13.7 VAUX POWER OUTPUT ..................................................................................................................................................... 72

13.8 ADC CONVERTER ............................................................................................................................................................. 73

13.8.1 Description ........................................................................................................................................................... 73

13.8.2 Using ADC Converter ............................................................................................................................................ 73

14 MOUNTING THE UE910 ON THE APPLICATION ........................................................................................................ 74

14.1 GENERAL ........................................................................................................................................................................ 74

14.2 MODULE FINISHING & DIMENSIONS ..................................................................................................................................... 74

14.3 RECOMMENDED FOOT PRINT FOR THE APPLICATION ................................................................................................................. 76

14.4 STENCIL .......................................................................................................................................................................... 77

14.5 PCB PAD DESIGN .............................................................................................................................................................. 77

14.6 PCB PAD DIMENSIONS ....................................................................................................................................................... 78

14.7 SOLDER PASTE .................................................................................................................................................................. 80

14.7.1 UE910 Solder reflow ............................................................................................................................................. 80

14.8 PACKING SYSTEM (TRAY) .................................................................................................................................................... 82

14.9 PACKING SYSTEM (REEL) .................................................................................................................................................... 84

14.9.1 Carrier Tape Detail ............................................................................................................................................... 84

14.9.2 Reel Detail ............................................................................................................................................................ 85

14.9.3 Packaging Detail .................................................................................................................................................. 86

14.10 MOISTURE SENSITIVITY .................................................................................................................................................... 86

15 SAFETY RECOMMANDATIONS ................................................................................................................................. 87

16 CONFORMITY ASSESSMENT ISSUES ......................................................................................................................... 88

16.1 1999/5/EC DIRECTIVE ..................................................................................................................................................... 88

16.2 FCC/IC REGULATORY NOTICES ............................................................................................................................................ 91

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 5 of 93

1 Introduction

DRAFT

1.1 Scope

The aim of this document is the description of some hardware solutions useful for developing a
product with the Telit UE910 module.

1.2 Audience

This document is intended for Telit customers, who are integrators, about to implement their
applications using our UE910 modules.

1.3 Contact Information, Support

For general contact, technical support, to report documentation errors and to order manuals,
contact Telit’s Technical Support Center (TTSC) at:

[e-mail]
[e-mail]
[e-mail]
[e-mail]

Alternatively, use:

http://www.telit.com/en/products/technical-support-center/contact.php

For detailed information about where you can buy the Telit modules or for recommendations on
accessories and components visit:

http://www.telit.com

To register for product news and announcements or for product questions contact Telit’s

Technical Support Center (TTSC).
Our aim is to make this guide as helpful as possible. Keep us informed of your comments and
suggestions for improvements.
Telit appreciates feedback from the users of our information.

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 6 of 93

1.4 Document Organization

DRAFT

This document contains the following chapters:

Chapter 1: “Introduction” provides a scope for this document, target audience, contact and
support information, and text conventions.

Chapter 2: “Overview” provides an overview of the document.

Chapter3: “UE910 Module Connections” deals with the pin out configuration and layout.

Chapter 4: “Hardware Commands” How to operate on the module via hardware.

Chapter 5: “Power supply” Power supply requirements and general design rules.

Chapter 6: “GSM/WCDMA Radio” The antenna connection and board layout design are the

most important parts in the full product design.

Chapter 7: “Logic Level specifications” Specific values adopted in the implementation of logic
levels for this module.

Chapter 8: “USB Port” The USB port on the Telit UE910 is the core of the interface between the
module and OEM hardware

Chapter 9: “SPI port” Refers to the SPI port of the Telit UE910

Chapter 10: “USB HSIC” Refers to the USB HSIC port of the Telit UE910

Chapter 11: “Serial ports” Refers to the serial ports of the Telit UE910

Chapter 12: “Audio Section overview” Refers to the audio blocks of the Base Band Chip of the
UE910 Telit Modules.

Chapter 13: “General Purpose I/O” How the general purpose I/O pads can be configured.

Chapter 14: “Mounting the UE910 on the application board” Mechanical dimensions and
recommendations on how to mount the module on the user’s board.

Chapter 15: “Safety Recommendations” Information related to the Safety topics.

Chapter 16: “Conformity Assessment Issues” Information related to the Conformity
Assessments.

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 7 of 93

1.5 Text Conventions

DRAFT

Danger – This information MUST be followed or catastrophic equipment failure or bodily
injury may occur.

Caution or Warning – Alerts the user to important points about integrating the module, if
these points are not followed, the module and end user equipment may fail or malfunction.

Tip or Information – Provides advice and suggestions that may be useful when integrating
the module.

All dates are in ISO 8601 format, i.e. YYYY-MM-DD.

1.6 Related Documents

 Digital Voice Interface Application Note 80000NT10050A
 SPI Port Application Note 80000NT10053A
 SIM Holder Design Guides 80000NT10001a
 USB HSIC Port Application Note 80000NT10071A
 AT Commands Reference Guide 80378ST10091A
 Telit EVK2 User Guide 1vv0300704

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 8 of 93

1.7 Document History

RReevviissiioonn

DDaattee

CChhaannggeess

ISSUE#0

2012-09-07

Preliminary Version

ISSUE#1

2013-04-10

Updated Chapters 5.2, 6.3, 6.4, 9, 11, 13.4, 15

ISSUE#2

2013-04-24

Updated Chapters 13.4, 15.2

ISSUE#3

2013-08-02

Updated Chapters 4, 5.1, 6.3, 12.4, 13.4, added Reel packaging chapter

ISSUE#4

2013-08-30

Updated Chapters 3.1, 4.1, 4.2, 5.2, 7, 8.1, 10, 12.1

ISSUE#5

2013-12-20

Updated Chapters 1.4, 1.6, 3.1, updated schematics and flow charts; added
USB HSIC; updated packaging drawing; added PCB Guidelines for FCC.

ISSUE#6

2014-08-28

ISSUE#7

2015-05-25

Updated Chapter 14.8 Packing system (Tray)

ISSUE#8

2016-09-01

Updated Chapter 3.1.1 LGA Pads Layout – updated pin B1

ISSUE#9

2016-11-30

Updated Chapter 3.1 Pin Out – updated pin B1 (deleted from Reserved pin)

ISSUE#10

2016-12-13

Updated with UE910-GL product

ISSUE#11

2016-12-16

Updated Chapter 3.1 Pin Out

DRAFT

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 9 of 93

2 Overview

UE910

DRAFT

The aim of this document is the description of some hardware solutions useful for developing a
product with the Telit UE910 module.
In this document all the basic functions of a mobile phone will be taken into account; for each
one of them a proper hardware solution will be suggested and eventually the wrong solutions
and common errors to be avoided will be evidenced. Obviously this document cannot embrace
the whole hardware solutions and products that may be designed. The wrong solutions to be
avoided shall be considered as mandatory, while the suggested hardware configurations shall not
be considered mandatory, instead the information given shall be used as a guide and a starting
point for properly developing your product with the Telit UE910 module. For further hardware
details that may not be explained in this document refer to the Telit UE910 Product Description
document where all the hardware information is reported.

NOTICE:

(EN) The integration of the GSM/GPRS/WCDMA UE910 cellular module within user application shall
be done according to the design rules described in this manual.

(IT) L’integrazione del modulo cellulare GSM/GPRS/WCDMA UE910 all’interno dell’applicazione
dell’utente dovrà rispettare le indicazioni progettuali descritte in questo manuale.

(DE) Die Integration des UE910 GSM/GPRS/WCDMA Mobilfunk-Moduls in ein Gerät muß gemäß der
in diesem Dokument beschriebenen Kunstruktionsregeln erfolgen.

(SL) Integracija GSM/GPRS/WCDMA UE910 modula v uporabniški aplikaciji bo morala upoštevati
projektna navodila, opisana v tem priročniku.

(SP) La utilización del modulo GSM/GPRS/WCDMA UE910 debe ser conforme a los usos para los
cuales ha sido deseñado descritos en este manual del usuario.

(FR) L’intégration du module cellulaire GSM/GPRS/WCDMA UE910 dans l’application de l’utilisateur
sera faite selon les règles de conception décrites dans ce manuel.

(HE)

The information presented in this document is believed to be accurate and reliable. However, no
responsibility is assumed by Telit Communications S.p.A. for its use, nor any infringement of patents or
other rights of third parties which may result from its use. No license is granted by implication or
otherwise under any patent rights of Telit Communications S.p.A. other than for circuitry embodied in
Telit products. This document is subject to change without notice.

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 10 of 93

3 UE910 module connections

PAD

Signal

I/O

Function

Type

COMMENT

USB HS 2.0 COMMUNICATION PORT

B15

USB_D+

I/O

USB differential Data (+)

C15

USB_D-

I/O

USB differential Data (-)

A13

VUSB

I

Power sense for the internal USB

transceiver.

Asynchronous Serial Port (USIF0) - Prog. / Data + HW Flow Control

N15

C103/TXD

I

Serial data input from DTE

CMOS 1.8V

M15

C104/RXD

O

Serial data output to DTE

CMOS 1.8V

M14

C108/DTR

I

Input for (DTR) from DTE

CMOS 1.8V

L14

C105/RTS

I

Input for Request to send signal

(RTS) from DTE

CMOS 1.8V

P15

C106/CTS

O

Output for Clear to Send signal

(CTS) to DTE

CMOS 1.8V

N14

C109/DCD

O

Output for (DCD) to DTE

CMOS 1.8V

P14

C107/DSR

O

Output for (DSR) to DTE

CMOS 1.8V

R14

C125/RING

O

Output for Ring (RI) to DTE

CMOS 1.8V

Asynchronous Auxiliary Serial Port (USIF1)

D15

TX_AUX

O

Auxiliary UART (TX Data to DTE)

CMOS 1.8V

E15

RX_AUX

I

Auxiliary UART (RX Data from

DTE)

CMOS 1.8V

USB HSIC

A12

HSIC_USB_DATA

I/O

USB HSIC data signal

CMOS 1.2V

A11

HSIC_USB_STRB

I/O

USB HSIC strobe signal

CMOS 1.2V

H15

HSIC_SLAVE_WAKEUP

I

Slave Wake Up

CMOS 1.8V

Shared with SPI_MRDY

F15

HSIC_HOST_WAKEUP

O

Host Wake Up

CMOS 1.8V

Shared with SPI CLK

K15

HSIC_SUSPEND_REQUEST

O

Slave Suspend Request

CMOS 1.8V

Shared with GPIO08

J15

HSIC_HOST_ACTIVE

I

Active Host Indication

CMOS 1.8V

Shared with SPI_SRDY

SIM card interface

A6

SIMCLK

O

External SIM signal – Clock

1.8 / 3V

A7

SIMRST

O

External SIM signal – Reset

1.8 / 3V

A5

SIMIO

I/O

External SIM signal – Data I/O

1.8 / 3V

A4

SIMIN

I

External SIM signal – Presence

(active low)

CMOS 1.8

A3

SIMVCC

-

External SIM signal – Power supply

for the SIM

1.8 / 3V

Analog Audio

B2

EAR+

O

Analog Audio Interface (EAR+)

Not available on UE910-

xxD/UE910-GL

DRAFT

3.1 PIN-OUT

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 11 of 93

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 12 of 93

B3

EAR-

O

Analog Audio Interface (EAR-)

Not available on UE910­xxD/UE910-GL

B4

MIC+

I

Analog Audio Interface (MIC+)

Not available on UE910­xxD/UE910-GL

B5

MIC-

I

Analog Audio Interface (MIC-)

Not available on UE910­xxD/UE910-GL

Digital Voice Interface (DVI)

B9

DVI_WA0

I/O

Digital Audio Interface (WA0)

CMOS 1.8V

B6

DVI_RX

I/O

Digital Audio Interface (RX)

CMOS 1.8V

B7

DVI_TX

I/O

Digital Audio Interface (TX)

CMOS 1.8V

B8

DVI_CLK

I/O

Digital Audio Interface (CLK)

CMOS 1.8V

SPI

D15

SPI_MOSI

I

SPI MOSI

CMOS 1.8V

Shared with TX_AUX

E15

SPI_MISO

O

SPI_MISO

CMOS 1.8V

Shared with RX_AUX

F15

SPI_CLK

I

SPI Clock

CMOS 1.8V

H15

SPI_MRDY

I

SPI_MRDY

CMOS 1.8V

J15

SPI_SRDY

O

SPI_SRDY

CMOS 1.8V

DIGITAL IO

C8

GPIO_01

I/O

GPIO_01 /STAT LED

CMOS 1.8V

Alternate Function STAT LED

C9

GPIO_02

I/O

GPIO_02

CMOS 1.8V

C10

GPIO_03

I/O

GPIO_03

CMOS 1.8V

C11

GPIO_04

I/O

GPIO_04

CMOS 1.8V

B14

GPIO_05

I/O

GPIO_05

CMOS 1.8V

C12

GPIO_06

I/O

GPIO_06

CMOS 1.8V

C13

GPIO_07

I/O

GPIO_07

CMOS 1.8V

K15

GPIO_08

I/O

GPIO_08

CMOS 1.8V

L15

GPIO_09

I/O

GPIO_09

CMOS 1.8V

G15

GPIO_10

I/O

GPIO_10

CMOS 1.8V

ADC

B1

ADC_IN1

AI

Analog / Digital converter input

A/D

Accepted values 0 to 1.2V DC

RF SECTION

K1

ANTENNA

I/O

GSM/EDGE/UMTS Antenna

(50 ohm)

RF

Miscellaneous Functions

R13

HW_SHUTDOWN*

I

HW Unconditional Shutdown

CMOS 1.8V

Active low

R12

ON_OFF*

I

Input command for power ON

CMOS 1.8V

Active low

C14

VRTC

I

VRTC Backup capacitor

Power

backup for the embedded RTC

supply

R11

VAUX/PWRMON

O

Supply Output for external

accessories / Power ON Monitor

1.8V

Power Supply

M1

VBATT

-

Main power supply (Baseband)

Power

M2

VBATT

-

Main power supply (Baseband)

Power

N1

VBATT_PA

-

Main power supply (Radio PA)

Power

DRAFT

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 13 of 93

N2

VBATT_PA

-

Main power supply (Radio PA)

Power

P1

VBATT_PA

-

Main power supply (Radio PA)

Power

P2

VBATT_PA

-

Main power supply (Radio PA)

Power

E1

GND - Ground

Power

G1

GND - Ground

Power

H1

GND - Ground

Power

J1

GND - Ground

Power

L1

GND - Ground

Power

A2

GND - Ground

Power

E2

GND - Ground

Power

F2

GND - Ground

Power

G2

GND - Ground

Power

H2

GND - Ground

Power

J2

GND - Ground

Power

K2

GND - Ground

Power

L2

GND - Ground

Power

R2

GND - Ground

Power

M3

GND - Ground

Power

N3

GND - Ground

Power

P3

GND - Ground

Power

R3

GND - Ground

Power

D4

GND - Ground

Power

M4

GND - Ground

Power

N4

GND - Ground

Power

P4

GND - Ground

Power

R4

GND - Ground

Power

N5

GND - Ground

Power

P5

GND - Ground

Power

R5

GND - Ground

Power

N6

GND - Ground

Power

P6

GND - Ground

Power

R6

GND - Ground

Power

P8

GND - Ground

Power

R8

GND - Ground

Power

P9

GND - Ground

Power

P10

GND - Ground

Power

R10

GND - Ground

Power

M12

GND - Ground

Power

B13

GND - Ground

Power

P13

GND - Ground

Power

E14

GND - Ground

Power

DRAFT

RESERVED

C1

RESERVED

-

RESERVED

D1

RESERVED

-

RESERVED

B2

RESERVED

-

RESERVED

C2

RESERVED

-

RESERVED

D2

RESERVED

-

RESERVED

B3

RESERVED

-

RESERVED

C3

RESERVED

-

RESERVED

D3

RESERVED

-

RESERVED

E3

RESERVED

-

RESERVED

F3

RESERVED

-

RESERVED

G3

RESERVED

-

RESERVED

H3

RESERVED

-

RESERVED

J3

RESERVED

-

RESERVED

K3

RESERVED

-

RESERVED

L3

RESERVED

-

RESERVED

B4

RESERVED

-

RESERVED

C4

RESERVED

-

RESERVED

B5

RESERVED

-

RESERVED

C5

RESERVED

-

RESERVED

C6

RESERVED

-

RESERVED

C7

RESERVED

-

RESERVED

N7

RESERVED

-

RESERVED

P7

RESERVED

-

RESERVED

N8

RESERVED

-

RESERVED

N9

RESERVED

-

RESERVED

A10

RESERVED

-

RESERVED

N10

RESERVED

-

RESERVED

N11

RESERVED

-

RESERVED

B12

RESERVED

-

RESERVED

D12

RESERVED

-

RESERVED

N12

RESERVED

-

RESERVED

P12

RESERVED

-

RESERVED

F14

RESERVED

-

RESERVED

G14

RESERVED

-

RESERVED

H14

RESERVED

-

RESERVED

J14

RESERVED

-

RESERVED

K14

RESERVED

-

RESERVED

N13

RESERVED

-

RESERVED

L13

RESERVED

-

RESERVED

J13

RESERVED

-

RESERVED

M13

RESERVED

-

RESERVED

DRAFT

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 14 of 93

K13

RESERVED

-

RESERVED

H13

RESERVED

-

RESERVED

G13

RESERVED

-

RESERVED

F13

RESERVED

-

RESERVED

B11

RESERVED

-

RESERVED

B10

RESERVED

-

RESERVED

A9

RESERVED

-

RESERVED

A8

RESERVED

-

RESERVED

D14

RESERVED

-

RESERVED

A14

RESERVED

-

RESERVED

D13

RESERVED

-

RESERVED

E13

RESERVED

-

RESERVED

F1

RESERVED

-

RESERVED

R9

RESERVED

-

RESERVED

R7

RESERVED

-

RESERVED

P11

RESERVED

-

RESERVED

WARNING:

Product

Audio

Notes

UE910-EUR

YES

Analog and digital audio

UE910-EUD

NO

Reserved Pads:,B2, B3, B4, B5

UE910-NAR

YES

Analog and digital audio

UE910-NAD

NO

Reserved Pads:,B2, B3, B4, B5

UE910-GL

YES

Digital Audio; Reserved Pads:B2, B3, B4, B5

DRAFT

Reserved pins must not be connected.

NOTE 1:

The following table is listing the main Pinout differences between the UE910 variants

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 15 of 93

NOTE:

PAD

Signal

Notes

M1,M2,N1,N2,P1,P2

VBATT & VBATT_PA

E1,G1,H1,J1,L1,A2,E2,F2,G2,H2,

J2,K2,L2,R2,M3,N3,P3,R3,D4,M4,

N4,P4,R4,N5,P5,R5,N6,P6,R6,P8,
R8,P9,P10,R10,M12,B13,P13,E14

GND

R12

ON/OFF*

R13

HW_SHUTDOWN*

B15

USB_D+

If not used should be connected to a

Test Point or an USB connector

C15

USB_D-

If not used should be connected to a

Test Point or an USB connector

A13

VUSB

If not used should be connected to a

Test Point or an USB connector

N15

C103/TXD

If not used should be connected to a

Test Point

M15

C104/RXD

If not used should be connected to a

Test Point

L14

C105/RTS

If the flow control is not used it should

be connected to GND

P15

C106/CTS

If not used should be connected to a

Test Point

D15

TXD_AUX

If not used should be connected to a

Test Point

E15

RXD_AUX

If not used should be connected to a

Test Point

K1

MAIN ANTENNA

DRAFT

If not used, almost all pins should be left disconnected. The only exceptions are the following
pins:

RTS pin should be connected to the GND (on the module side) if flow control is not used.
The above pins are also necessary to debug the application when the module is assembled on it so we

recommend connecting them also to dedicated test point.

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 16 of 93

3.1.1 LGA Pads Layout

A B C D E F G H J K L M N P R

1

ADC_IN1

RES

RES

GND

RES

GND

GND

GND

ANT

GND

VBATT

VBATT_P

A

VBATT_P

A

2

GND

SPK+

RES

RES

GND

GND

GND

GND

GND

GND

GND

VBATT

VBATT_P

A

VBATT_P

A

GND

3

SIMVCC

SPK -

RES

RES

RES

RES

RES

RES

RES

RES

RES

GND

GND

GND

GND

4

SIMIN

MIC+

RES

GND

GND

GND

GND

GND

5

SIMIO

MIC -

RES

GND

GND

GND

6

SIMCLK

DVI_RX

RES

GND

GND

GND

7

SIMRST

DVI_TX

RES

RES

RES

RES

8

RES

DVI_CLK

GPIO_01

RES

GND

GND

9

RES

DVI_WA0

GPIO_02

RES

GND

RES

10

RES

RES

GPIO_03

RES

GND

GND

11

HSIC_US

B_STRB

RES

GPIO_04

RES

RES

VAUX/PW

RMON

12

HSIC_US

B_DATA

RES

GPIO_06

RES

GND

RES

RES

ON_OFF*

13

VUSB

GND

GPIO_07

RES

RES

RES

RES

RES

RES

RES

RES

RES

RES

GND

HW_SHU
TDOWN*

14

RES

GPIO_05

VRTC

RES

GND

RES

RES

RES

RES

RES

C105/RTS

C108/DTR

C109/DC

D

C107/DSR

C125/RIN

G

15

USB_D+

USB_D-

TX AUX

RX AUX

SPI_CLK

GPIO_10

SPI_MRD

Y

SPI_SRD

Y

GPIO_08

GPIO_09

C104/RXD

C103/TXD

C106/CTS

DRAFT

TOP VIEW

NOTE:

The pin defined as RES has to be considered RESERVED and not connected on any pin in the
application.

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 17 of 93

4 Hardware Commands

DRAFT

4.1 Turning ON the UE910

To turn on the UE910 the pad ON_OFF* must be tied low for at least 5 seconds and then
released.

The maximum current that can be drained from the ON_OFF* pad is 0,1 mA.
A simple circuit to do it is:

NOTE:

Don't use any pull up resistor on the ON_OFF* line, it is internally pulled up. Using pull up
resistor may bring to latch up problems on the UE910 power regulator and improper power
on/off of the module. The line ON_OFF* must be connected only in open collector or open
drain configuration.

NOTE:

In this document all the lines that are inverted, hence have active low signals are labelled with a
name that ends with”#",”*” or with a bar over the name.

TIP:

To check if the device has powered on, the hardware line PWRMON should be monitored.

NOTE:

It is mandatory to avoid sending data to the serial ports during the first 200ms of the module
start-up.

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 18 of 93

A flow chart showing the proper turn on procedure is displayed below:

DRAFT

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 19 of 93

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 20 of 93

“Modem ON Proc”

START

Y

Y

GOTO

“HW SHUTDOWN

unconditional”

GOTO

“Start AT CMD.”

N

PWMON = ON ?

PWMON = ON ?

N

Delay 1s

ON_OFF* = LOW

Delay = 5 Sec

ON_OFF* = HIGH

“Modem ON Proc”

END

VBATT > 3.22V ?

Y

N

DRAFT

A flow chart showing the AT commands managing procedure is displayed below:

AT answer in

1 sec ?

N

Y

“Start AT CMD.”

START

DELAY 300msec

Enter AT<CR>

“Start AT CMD.”

END

GOTO

“HW SHUTDOWN

unconditional”

GOTO

“Modem ON Proc.”

DRAFT

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 21 of 93

NOTE:

DRAFT

In order to avoid a back powering effect it is recommended to avoid having any HIGH logic
level signal applied to the digital pins of the UE910 when the module is powered off or during
an ON/OFF transition.

For example:
1- Let's assume you need to drive the ON_OFF* pad with a totem pole output of a +3/5 V
microcontroller (uP_OUT1):

2- Let's assume you need to drive the ON_OFF* pad directly with an ON/OFF button:

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 22 of 93

WARNING

DRAFT

It is recommended to set the ON_OFF* line LOW to power on the module only after VBATT is higher
than 3.22V.
In case this condition it is not satisfied you could use the HW_SHUTDOWN* line to recover it and
then restart the power on activity using the ON_OFF * line.

An example of this is described in the following diagram:

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 23 of 93

After HW_SHUTSDOWN* is released you could again use the ON_OFF* line to power on the

DRAFT

module.

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 24 of 93

4.2 Turning OFF the UE910

DRAFT

Turning off of the device can be done in two ways:

 via AT command (see UE910 Software User Guide, AT#SHDN)
 by tying low pin ON_OFF*

Either ways, the device issues a detach request to network informing that the device will not be
reachable any more.
To turn OFF the UE910 the pad ON_OFF* must be tied low for at least 3 seconds and then
released.

TIP:
To check if the device has been powered off, the hardware line PWRMON must be monitored.

The device is powered off when PWRMON goes low.

NOTE:

In order to avoid a back powering effect it is recommended to avoid having any HIGH logic
level signal applied to the digital pins of the UE910 when the module is powered off or during
an ON/OFF transition.

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 25 of 93

The following flow chart shows the proper turn off procedure:

DRAFT

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 26 of 93

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 27 of 93

Modem OFF Proc.

START

AT

Y

N

PWMON = ON ?

OFF Mode

ON_OFF* = LOW

Delay >= 3 Sec

ON_OFF* = HIGH

“Modem OFF Proc”

END

PWRMON=ON?

Y

N

Key

AT#SHDN

GOTO

“HW SHUTDOWN

Unconditional”

Looping for more

than 15s ?

Y

N

DRAFT

4.3 UE910 Unconditional Shutdown

DRAFT

The Unconditional Shutdown of the module could be activated using the
HW_SHUTDOWN* line (pad R13).

WARNING:

The hardware unconditional Shutdown must not be used during normal operation of the device
since it does not detach the device from the network. It shall be kept as an emergency exit
procedure.

To unconditionally shutdown the UE910, the pad HW_SHUTDOWN* must be tied low for at
least 200 milliseconds and then released.

NOTE:
Do not use any pull up resistor on the HW_SHUTDOWN* line nor any totem pole digital

output. Using pull up resistor may bring to latch up problems on the UE910 power regulator and
improper functioning of the module. The line HW_SHUTDOWN* must be connected only in
open collector configuration.

The HW_SHUTDOWN* is generating an unconditional shutdown of the module without an
automatic restart.

The module will shutdown, but will NOT perform the detach from the cellular network.

To proper power on again the module please refer to the related paragraph (“Powering ON the
UE910”)

TIP:

The unconditional hardware shutdown must always be implemented on the boards and should be
used only as an emergency exit procedure.

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 28 of 93