Ublox TOBY-L1 series, MPCI-L1 series System Integration Manual

2 LTE Bands in

PCI Express

UBX

www.u

TOBY-L1 and MPCI-L1 series

LTE modules

System Integration Manual

Abstract

This document describes the features and the system integration TOBY-L1 and MPCI-L1 series LTE cellular modules.

These modules are a complete and cost efficient 4G solution offering 100 Mb/s download, 50 Mb/s upload, and covering the compact TOBY form factor or in the industry standard Mini Card (MPCI) form factor.

TOBY-L1 series

MPCI-L1 series

-blox.com

-13001482 - R04

TOBY-L1 and MPCI-L1 series - System Integration Manual

Document Information

Title TOBY-L1 and MPCI-L1 series

Subtitle LTE modules

Document type System Integration Manual

Document number UBX-13001482

Revision, date R04 15-Oct-2014

Document status Advance Information

Document status explanation

Objective Specification Document contains target values. Revised and supplementary data will be published later.

Advance Information Document contains data based on early testing. Revised and supplementary data will be published later.

Early Production Information Document contains data from product verification. Revised and supplementary data may be published later.

Production Information Document contains the final product specification.

This document applies to the following products:

Product name Type number Firmware version PCN / IN

TOBY-L100 TOBY-L100-00S-00 G0.V.00.00.15R UBX-14002653 MPCI-L100 MPCI-L100-00S-00 G0.V.01.00.02 UBX-14041173

u-blox reserves all rights to this document and the information contained herein. Products, names, logos and designs described herein may in whole or in part be subject to intellectual property rights. Reproduction, use, modification or disclosure to third parties of this document or any part thereof without the express permission of u-blox is strictly prohibited. The information contained herein is provided “as is” and u-blox assumes no liability for the use of the information. No warranty, either express or implied, is given, including but not limited, with respect to the accuracy, correctness, reliability and fitness for a particular purpose of the information. This document may be revised by u-blox at any time. For most recent documents, visit www.u-blox.com.

u-blox

is a registered trademark of u-blox Holding AG in the EU and other countries. Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. PCI, PCI Express, PCIe, and PCI-SIG are trademarks or registered trademarks of PCI-SIG. All other registered trademarks or trademarks mentioned in this document are property of their respective owners.

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Advance Information

TOBY-L1 and MPCI-L1 series - System Integration Manual

Preface

u-blox Technical Documentation

As part of our commitment to customer support, u-blox maintains an extensive volume of technical documentation for our products. In addition to our product-specific technical data sheets, the following manuals are available to assist u-blox customers in product design and development.

• AT Commands Manual: This document provides the description of the AT commands supported by

u-blox cellular modules.

• System Integration Manual: This document describes u-blox cellular modules from the hardware and the

software point of view. It provides hardware design guidelines for the optimal integration of the cellular module in the application device and it provides information on how to set up production and final product tests on application devices integrating the cellular module.

• Application Notes: These documents provide guidelines and information on specific hardware and/or

software topics on u-blox cellular modules. See Related documents for a list of application notes related to your cellular module.

How to use this Manual

The TOBY-L1 and MPCI-L1 series System Integration Manual provides the necessary information to successfully design and configure the u-blox cellular modules.

This manual has a modular structure. It is not necessary to read it from the beginning to the end. The following symbols are used to highlight important information within the manual:

An index finger points out key information pertaining to module integration and performance.

A warning symbol indicates actions that could negatively impact or damage the module.

Questions

If you have any questions about u-blox cellular Integration:

• Read this manual carefully.

• Contact our information service on the homepage

http://www.u-blox.com

Technical Support

Worldwide Web

Our website (www.u-blox.com) is a rich pool of information. Product information and technical documents can be accessed 24h a day.

By E-mail

Contact the closest Technical Support office by email. Use our service pool email addresses rather than any personal email address of our staff. This makes sure that your request is processed as soon as possible. You will find the contact details at the end of the document.

Helpful Information when Contacting Technical Support

When contacting Technical Support, have the following information ready:

• Module type (example: TOBY-L100) and firmware version

• Module configuration

• Clear description of your question or the problem

• A short description of the application

• Your complete contact details

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Preface ................................................................................................................................ 3

Contents .............................................................................................................................. 4

1 System description ....................................................................................................... 7

1.1 Overview .............................................................................................................................................. 7

1.2 Architecture .......................................................................................................................................... 9

1.2.1 Internal blocks ............................................................................................................................. 10

1.3 Pin-out ............................................................................................................................................... 11

1.3.1 TOBY-L1 series pin assignment .................................................................................................... 11

1.3.2 MPCI-L1 series pin assignment .................................................................................................... 13

1.4 Operating modes ................................................................................................................................ 15

1.5 Supply interfaces ................................................................................................................................ 17

1.5.1 Module supply input (VCC or 3.3aux) .......................................................................................... 17

1.5.2 RTC supply output (V_BCKP) ....................................................................................................... 21

1.5.3 Generic digital interfaces supply output (V_INT) ........................................................................... 21

1.6 System function interfaces .................................................................................................................. 22

1.6.1 Module power-on ....................................................................................................................... 22

1.6.2 Module power-off ....................................................................................................................... 25

1.6.3 Module reset ............................................................................................................................... 27

1.7 Antenna interface ............................................................................................................................... 29

1.7.1 Antenna RF interfaces (ANT1 / ANT2) .......................................................................................... 29

1.8 SIM interface ...................................................................................................................................... 32

1.8.1 SIM card interface ....................................................................................................................... 32

1.9 Data communication interfaces .......................................................................................................... 32

1.9.1 Universal Serial Bus (USB) ............................................................................................................ 32

1.10 General Purpose Input/Output (GPIO) ............................................................................................. 33

1.11 Mini PCIe specific signals (W_DISABLE#, LED_WWAN#) .................................................................. 34

1.12 Reserved pins (RSVD) ...................................................................................................................... 34

1.13 Not connected pins (NC) ................................................................................................................. 34

1.14 System features............................................................................................................................... 35

1.14.1 Network indication ...................................................................................................................... 35

1.14.2 Power saving ............................................................................................................................... 35

2 Design-in ..................................................................................................................... 36

2.1 Overview ............................................................................................................................................ 36

2.2 Supply interfaces ................................................................................................................................ 37

2.2.1 Module supply (VCC or 3.3aux) ................................................................................................... 37

2.2.2 RTC supply output (V_BCKP) ....................................................................................................... 45

2.2.3 Digital I/O interfaces supply output (V_INT) .................................................................................. 45

2.3 System functions interfaces ................................................................................................................ 46

2.3.1 Module power-on (PWR_ON) ...................................................................................................... 46

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2.3.2 Module reset (RESET_N and PERST#) ........................................................................................... 47

2.4 Antenna interface ............................................................................................................................... 49

2.4.1 Antenna RF interfaces (ANT1 / ANT2) .......................................................................................... 49

2.5 SIM interface ...................................................................................................................................... 55

2.5.1 Guidelines for SIM circuit design.................................................................................................. 55

2.5.2 Guidelines for SIM layout design ................................................................................................. 58

2.6 Data communication interfaces .......................................................................................................... 59

2.6.1 Universal Serial Bus (USB) ............................................................................................................ 59

2.7 General Purpose Input/Output (GPIO) ................................................................................................. 61

2.8 Mini PCIe specific signals (W_DISABLE#, LED_WWAN#) ...................................................................... 62

2.9 Reserved pins (RSVD) .......................................................................................................................... 64

2.10 Module placement .......................................................................................................................... 64

2.11 TOBY-L1 series module footprint and paste mask ........................................................................... 65

2.12 MPCI-L1 series module installation .................................................................................................. 66

2.13 Thermal guidelines .......................................................................................................................... 68

2.14 ESD guidelines ................................................................................................................................ 69

2.14.1 ESD immunity test overview ........................................................................................................ 69

2.14.2 ESD immunity test of TOBY-L1 and MPCI-L1 series reference designs .......................................... 69

2.14.3 ESD application circuits ................................................................................................................ 70

2.15 Schematic for TOBY-L1 and MPCI-L1 series module integration ...................................................... 72

2.16 Design-in checklist .......................................................................................................................... 74

2.16.1 Schematic checklist ..................................................................................................................... 74

2.16.2 Layout checklist ........................................................................................................................... 74

2.16.3 Antenna checklist ........................................................................................................................ 75

3 Handling and soldering ............................................................................................. 76

3.1 Packaging, shipping, storage and moisture preconditioning ............................................................... 76

3.2 Handling ............................................................................................................................................. 76

3.3 Soldering ............................................................................................................................................ 77

3.3.1 Soldering paste............................................................................................................................ 77

3.3.2 Reflow soldering ......................................................................................................................... 77

3.3.3 Optical inspection ........................................................................................................................ 78

3.3.4 Cleaning ...................................................................................................................................... 78

3.3.5 Repeated reflow soldering ........................................................................................................... 78

3.3.6 Wave soldering............................................................................................................................ 79

3.3.7 Hand soldering ............................................................................................................................ 79

3.3.8 Rework ........................................................................................................................................ 79

3.3.9 Conformal coating ...................................................................................................................... 79

3.3.10 Casting ........................................................................................................................................ 79

3.3.11 Grounding metal covers .............................................................................................................. 79

3.3.12 Use of ultrasonic processes .......................................................................................................... 79

4 Approvals .................................................................................................................... 80

4.1 Product certification approval overview ............................................................................................... 80

4.2 Federal Communications Commission and Industry Canada notice ..................................................... 81

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4.2.1 Declaration of Conformity – United States only ........................................................................... 81

4.2.2 Modifications .............................................................................................................................. 81

5 Product Testing........................................................................................................... 83

5.1 u-blox in-series production test ........................................................................................................... 83

5.2 Test parameters for OEM manufacturer .............................................................................................. 84

5.2.1 “Go/No go” tests for integrated devices ...................................................................................... 84

5.2.2 RF functional tests ....................................................................................................................... 84

5.2.3 Connecting to Wireless Communication Test Set ......................................................................... 86

Appendix .......................................................................................................................... 87

A Glossary ...................................................................................................................... 87

Related documents........................................................................................................... 89

Revision history ................................................................................................................ 89

Contact .............................................................................................................................. 90

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LTE category LTE bands UMTS bands GSM bands GNSS receiver CellLocate™ UART USB 2.0 USB HSIC RMII SDIO GPIO Audio MIMO 2x2 CSFB VoLTE Embedded TCP/UDP stack Embedded HTTP, FTP, SSL FOTA

1 System description

1.1 Overview

The TOBY-L1 and MPCI-L1 series comprises 4G LTE-only modules supporting two LTE bands for data communication:

• TOBY-L1 and MPCI-L1 series modules are designed for operation on the LTE Verizon network in North

America (LTE bands 4, 13), and meets the requirements of Verizon network certification for LTE only devices.

LTE-only modules offer cost advantages compared to multi-mode (LTE/3G/2G) modules and are optimized for applications using only LTE networks. Additionally, the TOBY-L1 and MPCI-L1 series modules are designed in two different form-factors suitable for applications as following:

• TOBY-L1 modules are designed in the small TOBY 152-pin Land Grid Array form-factor (35.6 x 24.8 mm),

easy to integrate in compact designs and form-factor compatible with the u-blox cellular module families. This allows customers to take the maximum advantage of their hardware and software investments, and provides very short time-to-market.

• MPCI-L1 modules are designed in the industry standard PCI Express Full-Mini Card form-factor (51 x 30 mm),

easy to integrate into industrial and consumer applications and also ideal for manufacturing small series.

The modules are dedicated for data transfer, supporting a high-speed USB 2.0 interface. With LTE Category 3 data rates of 100 Mb/s (downlink) and 50 Mb/s (uplink), they are ideal for applications requiring the highest data rates and high-speed internet access. TOBY-L1 and MPCI-L1 series modules are the perfect choice for consumer fixed-wireless terminals, mobile routers and gateways, and applications requiring video streaming. They are also optimally suited for industrial (M2M) applications, such as remote access to video cameras, digital signage, telehealth, security, and surveillance systems.

TOBY-L1 and MPCI-L1 series main features and interface are summarized in Table 1.

Module

TOBY-L100 Verizon 3 4, 13 • 6 •

MCPI-L100 Verizon 3 4, 13 • •

Table 1: TOBY-L1 and MPCI-L1 series main features summary

Region /

Operator

LTE UMTS GSM GNSS Interfaces Audio Features

GPIOs are not supported by the TOBY-L1 modules’ initial FW release. Check FW release schedule.

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Table 2 reports a summary of LTE characteristics of the TOBY-L1 and MPCI-L1 series module.

4G LTE Characteristics

3GPP Release 9 - Long Term Evolution (LTE) Evolved Universal Terrestrial Radio Access (E-UTRA) Frequency Division Duplex (FDD) Multi-Input Multi-Output (MIMO) 2 x 2 antenna support

Band support:

• Band 4: 1710 - 1755 MHz (Tx), 2110 - 2155 MHz (Rx)

• Band 13: 777 - 787 MHz (Tx), 746 - 756 MHz (Rx)

Channel bandwidth:

• Band 4: 5 MHz, 10 MHz, 15 MHz, 20 MHz

• Band 13: 10 MHz

Power class:

• Class 3 (+23 dBm)

Data rate:

• LTE category 3: up to 50 Mb/s Up-Link, 100 Mb/s Down-Link

Short Message Service (SMS):

• SMS via embedded IMS (IP Multimedia Subsystem)

Table 2: TOBY-L1 and MPCI-L1 series LTE characteristics summary

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1.2 Architecture

Cellular

Base-band

Processor

Memory

Power Management Unit

26 MHz

32.768 kHz

ANT1

Transceiver

ANT2

V_INT (I/O)

V_BCKP

VCC (Supply)

SIM

USB

GPIO *

Power On

External Reset

LNA Filter

Filter

Duplexer

Filter

LNA Filter

Filter

Duplexer

Filter

LNA FilterFilter

Switch

ANT1

SIM

USB

LED_WWAN#

TOBY-L1

series

Signal

Conditioning

ANT

W_DISABLE

PERST#

U.FL

3.3Vaux (Supply)

Boost

Converter

VCC

TOBY-L1 and MPCI-L1 series - System Integration Manual

Figure 1: TOBY-L100 block diagram

* = GPIOs are not supported by initial FW release.

Figure 2: MPCI-L100 block diagram

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1.2.1 Internal blocks

As described in Figure 2, each MPCI-L100 module integrates one TOBY-L100 module, which consists of the following internal sections: RF, baseband and power management.

RF section

The RF section is composed of RF transceiver, PAs, LNAs, crystal oscillator, filters, duplexers and RF switches. Tx signal is pre-amplified by RF transceiver, then output to the primary antenna input/output port (ANT1) of the

module via power amplifier (PA), SAW band pass filters band, specific duplexer and antenna switch. Dual receiving paths are implemented according to Down-Link MIMO 2 x 2 radio technology supported by the

modules as mandatory feature for LTE category 3 User Equipment designed to operate on Verizon LTE network: incoming signals are received through the primary (ANT1) and secondary (ANT2) antenna input ports which are connected to the RF transceiver via specific antenna switch, diplexer, duplexer, LNA, SAW band pass filters.

• RF transceiver performs modulation, up-conversion of the baseband I/Q signals for Tx, down-conversion and

demodulation of the dual RF signals for Rx. The RF transceiver contains:

Automatically gain controlled direct conversion Zero-IF receiver, Highly linear RF demodulator / modulator capable QPSK/16QAM/64QAM, Fractional-N Sigma-Delta RF synthesizer, VCO.

• Power Amplifiers (PA) amplify the Tx signal modulated by the RF transceiver

• RF switches connect primary (ANT1) and secondary (ANT2) antenna ports to the suitable Tx / Rx path

• Low Noise Amplifiers (LNA) enhance the received sensitivity

• SAW duplexers separate the Tx and Rx signal paths and provide RF filtering

• SAW band pass filters enhance the rejection of out-of-band signals

• 26 MHz crystal oscillator generates the clock reference in active-mode or connected-mode.

Baseband and Power Management section

The Baseband and Power Management section is composed of the following main elements:

• A mixed signal ASIC, which integrates

Microprocessor for control functions, DSP core for LTE Layer 1 and digital processing of Rx and Tx signal paths,

Memory interface controller,

Dedicated peripheral blocks for control of the USB, SIM and GPIO digital interfaces, Analog front end interfaces to RF transceiver ASIC.

• Memory system, which includes NAND flash and LPDDR.

• Voltage regulators to derive all the subsystem supply voltages from the module supply input VCC

• Voltage sources for external use: V_BCKP and V_INT

• Hardware power on

• Hardware reset

• Low power idle-mode support

• 32.768 kHz crystal oscillator to provide the clock reference in the low power idle-mode, which can be set by

enable power saving configuration using the AT+UPSV command.

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46, 69, 73, 74, 76, 78, 79, 80, 82, 83, 85, 86,

1.3 Pin-out

1.3.1 TOBY-L1 series pin assignment

Table 3 lists the pin-out of the TOBY-L100 module, with pins grouped by function.

Function Pin Name Pin No I/O Description Remarks

Power VCC 70,71,72 I Module supply input VCC pins are internally connected each other.

VCC supply circuit affects the RF performance and

compliance of the device integrating the module with applicable required certification schemes. See section 1.5.1 for functional description and requirements for the VCC module supply. See section 2.2.1 for external circuit design-in.

GND 2, 30, 32, 44,

88-90, 92-152

V_BCKP 3 O RTC supply output V_BCKP = 2.5 V (typical) generated by internal regulator

V_INT 5 O Generic Digital

System PWR_ON 20 I Power-on input High impedance input: input voltage level has to be

RESET_N 23 I External reset input

RF ANT1 81 I/O Primary antenna Main Tx / Rx antenna interface.

ANT2 87 I Secondary antenna Rx only for the DL MIMO 2x2 configuration.

N/A Ground GND pins are internally connected each other.

External ground connection affects the RF and thermal performance of the device. See section 1.5.1 for functional description. See section 2.2.1 for external circuit design-in.

when valid VCC supply is present. See section 1.5.2 for functional description. See section 2.2.2 for external circuit design-in.

Interfaces supply output

V_INT = 1.8 V (typical) generated by internal regulator when the module is switched on. See section 1.5.3 for functional description. See section 2.2.3 for external circuit design-in.

properly fixed, e.g. adding an external pull-up resistor to the V_BCKP output pin See section 1.6.1 for functional description. See section 2.3.1 for external circuit design-in.

Internal 10 kΩ pull-up to V_BCKP. See section 1.6.3 for functional description. See section 2.3.2 for external circuit design-in.

50 Ω nominal characteristic impedance. Antenna circuit affects the RF performance and compliance of the device integrating the module with applicable required certification schemes. See section 1.7 for functional description and requirements for the antenna RF interface. See section 2.4 for external circuit design-in.

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19, 26,

43,

68, 75, 77,

Function Pin Name Pin No I/O Description Remarks

SIM VSIM 59 O SIM supply output VSIM = 1.8 V / 3 V automatically generated according to

the connected SIM type. See section 1.8 for functional description. See section 2.5 for external circuit design-in.

SIM_IO 57 I/O SIM data Data input/output for 1.8 V / 3 V SIM

Internal 4.7 kΩ pull-up to VSIM. See section 1.8 for functional description. See section 2.5 for external circuit design-in.

SIM_CLK 56 O SIM clock 5 MHz clock output for 1.8 V / 3 V SIM

See section 1.8 for functional description. See section 2.5 for external circuit design-in.

SIM_RST 58 O SIM reset Reset output for 1.8 V / 3 V SIM

See section 1.8 for functional description. See section 2.5 for external circuit design-in.

USB USB_D- 27 I/O USB Data Line D- USB interface for AT commands, Data communication,

FOAT, FW update by u-blox tool and diagnostic. 90 Ω nominal differential impedance (Z 30 Ω nominal common mode impedance (Z

)

Pull-up or pull-down resistors and external series resistors as required by the USB 2.0 specifications [4] are part of the USB pad driver and need not be provided externally. See section 1.9.1 for functional description. See section 2.6.1 for external circuit design-in.

USB_D+ 28 I/O USB Data Line D+ USB interface for AT commands, Data communication,

FOAT, FW update by u-blox tool and diagnostic. 90 Ω nominal differential impedance (Z 30 Ω nominal common mode impedance (Z

)

GPIO GPIO1 21 I/O GPIO 1.8 V GPIO by default configured as pad disabled.

See section 1.10 for functional description. See section 2.7 for external circuit design-in.

GPIO2 22 I/O GPIO 1.8 V GPIO by default configured as pad disabled.

See section 1.10 for functional description. See section 2.7 for external circuit design-in.

GPIO3 24 I/O GPIO 1.8 V GPIO by default configured as pad disabled.

See section 1.10 for functional description. See section 2.7 for external circuit design-in.

GPIO4 25 I/O GPIO 1.8 V GPIO by default configured as pad disabled.

See section 1.10 for functional description. See section 2.7 for external circuit design-in.

GPIO5 60 I/O GPIO 1.8 V GPIO by default configured as pad disabled.

See section 1.10 for functional description. See section 2.7 for external circuit design-in.

GPIO6 61 I/O GPIO 1.8 V GPIO by default configured as pad disabled.

See section 1.10 for functional description. See section 2.7 for external circuit design-in.

Reserved RSVD 1, 4, 6-

29, 31, 33-

N/A RESERVED pin Leave unconnected.

See section 2.9

45, 47-55, 6284, 91

Table 3: TOBY-L100 module pin definition, grouped by function

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1.3.2 MPCI-L1 series pin assignment

Table 4 lists the pin-out of the MPCI-L100 module, with pins grouped by function.

Function Pin Name Pin No I/O Description Remarks

Power 3.3Vaux 2, 24, 39,

GND 4, 9, 15, 18,

Auxiliary Signals

Antennas ANT1 U.FL I/O Primary antenna Main Tx / Rx antenna interface.

ANT2 U.FL I Secondary antenna Rx only for DL MIMO 2x2 configuration.

SIM UIM_PWR 8 O SIM supply output UIM_PWR = 1.8 V / 3 V automatically generated

UIM_DATA 10 I/O SIM data Data input/output for 1.8 V / 3 V SIM

UIM_CLK 12 O SIM clock 5 MHz clock output for 1.8 V / 3 V SIM

UIM_RESET 14 O SIM reset Reset output for 1.8 V / 3 V SIM

PERST# 22 I External reset input

41, 52

21, 26, 27, 29, 34, 35, 37, 40, 43, 50

I Module supply input 3.3Vaux pins are internally connected each other.

3.3Vaux supply circuit affects the RF performance and compliance of the device integrating the module with applicable required certification schemes. See section 1.5.1 for functional description and requirements for the 3.3Vaux module supply.

See section 2.2.1 for external circuit design-in.

N/A Ground GND pins are internally connected each other.

External ground connection affects the RF and thermal performance of the device. See section 1.5.1 for functional description. See section 2.2.1 for external circuit design-in.

Internal 10 kΩ pull-up to 2.5 V supply. See section 1.6.3 for functional description. See section 2.3.2 for external circuit design-in.

50 Ω nominal characteristic impedance. Antenna circuit affects the RF performance and compliance of the device integrating the module with applicable required certification schemes. See section 1.7 for functional description / requirements. See section 2.4 for external circuit design-in.

50 Ω nominal characteristic impedance. Antenna circuit affects the RF performance and

compliance of the device integrating the module with applicable required certification schemes. See section 1.7 for functional description / requirements See section 2.4 for external circuit design-in.

according to the connected SIM type. See section 1.8 for functional description. See section 2.5 for external circuit design-in.

Internal 4.7 kΩ pull-up to UIM_PWR. See section 1.8 for functional description. See section 2.5 for external circuit design-in.

See section 1.8 for functional description. See section 2.5 for external circuit design-in.

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5 6, 7, 11,

13, 16, 17, 19,

Function Pin Name Pin No I/O Description Remarks

USB USB_D- 36 I/O USB Data Line D- USB interface for AT commands, Data communication,

FOAT, FW update by u-blox tool and diagnostic. 90 Ω nominal differential impedance (Z 30 Ω nominal common mode impedance (Z

)

USB_D+ 38 I/O USB Data Line D+ USB interface for AT commands, Data communication,

FOAT, FW update by u-blox tool and diagnostic. 90 Ω nominal differential impedance (Z 30 Ω nominal common mode impedance (Z

)

Specific Signals

LED_WWAN# 42 O LED indicator output Open drain active low output.

See section 1.11 for functional description. See section 2.8 for external circuit design-in.

W_DISABLE# 20 I Cellular radio disable

input

Internal 22 kΩ pull-up to 3.3Vaux. See section 1.11 for functional description. See section 2.8 for external circuit design-in.

Not Connected

NC 1,3,

N/A Not connected Internally not connected.

See section 1.13 for the description.

23, 25, 28, 30-33, 44-46, 47-49, 51

Table 4: MPCI-L100 module pin definition, grouped by function

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1.4 Operating modes

The TOBY-L1 and MPCI-L1 series modules have several operating modes. The operating modes are defined in Table 5 and described in details in Table 6, providing general guidelines for operation.

General Status Operating Mode Definition

Power-down Not-Powered Mode VCC or 3.3Vaux supply not present or below operating range: module is switched off. Power-Off Mode VCC or 3.3Vaux supply within operating range and module is switched off. Normal Operation Idle-Mode Module processor core runs with 32 kHz reference generated by the internal oscillator. Active-Mode Module processor core runs with 26 MHz reference generated by the internal oscillator. Connected-Mode RF Tx/Rx data connection enabled and processor core runs with 26 MHz reference.

Table 5: Module operating modes definition

Operating Mode Description Transition between operating modes

Not-Powered Mode Module is switched off.

Application interfaces are not accessible.

Power-Off Mode Module is switched off: normal shutdown by an

appropriate power-off event (refer to 1.6.2). Application interfaces are not accessible. MPCI-L1 modules do not support Power-Off Mode.

Idle-Mode Application interfaces are disabled: the module does

not accept data signals from an external device connected to the module.

The module automatically enters idle-mode whenever possible if power saving is enabled by AT+UPSV (see TOBY-L1 / MPCI-L1 series AT Commands Manual [3]) reducing current consumption (see 1.5.1.3).

Power saving configuration is not enabled by default: it can be enabled by AT+UPSV (see the TOBY-L1 / MPCI-L1 series AT Commands Manual [3]).

Active-Mode The module is ready to accept data signals from an

external device unless power saving configuration is enabled by AT+UPSV (refer to the section 1.9.1.3 and the TOBY-L1 / MPC I-L1 series AT C ommands Manual [3]).

When VCC or 3.3Vaux supply is removed, the TOBY-L1 / MPCI-L1 series modules enter not-powered mode.

When in not-powered mode, the TOBY-L1 modules cannot be switched on by a low level on PWR_ON input and enter power-off mode after applying VCC supply.

When in not-powered mode, the MPCI-L1 modules enter active mode after applying 3.3Vaux supply.

When the TOBY-L1 modules are switched off by an appropriate power-off event (refer to 1.6.2), the modules enter power-off mode from active-mode.

When in power-off mode, the TOBY-L1 modules can be switched on by a low level on PWR_ON, input (refer to

1.6.1): module switches from power-off to active-mode. When VCC supply is removed, the TOBY-L1 series module

switches from power-off mode to not-powered mode.

The TOBY-L1 and MPCI-L1 modules automatically switch from active-mode to idle-mode whenever possible if power saving is enabled (see 1.5.1.3, 1.9.1.3 and TOBY-L1 / MPCI-L1 series AT Commands Manual [3], AT+UPSV).

The module wakes up from idle-mode to active-mode in these events:

• Automatic periodic monitoring of the paging channel

for the paging block reception according to network conditions (see 1.5.1.3)

• The connected USB host forces a remote wakeup of

the module as USB device (see 1.9.1.3)

When the TOBY-L1 modules are switched on by an appropriate power-on event (refer to 2.3.1), the modules enter active-mode from power-off mode.

MPCI-L1 modules enter active mode from not-powered mode, after applying 3.3Vaux supply.

If power saving configuration is enabled by AT+UPSV, the module automatically switches from active to idle-mode whenever possible and it wakes up from idle to activemode in the events listed above (refer to idle to active transition description).

When a RF Tx/Rx data connection is initiated, the module switches from active-mode to connected-mode.

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MPCI-L1 Switch ON:

• Apply 3.3Vaux

If power saving is enabled and there is no activity for a defined time interval

Any wake up event described in the module operating modes summary table above

Incoming/outgoing call or other dedicated device network

communication

No RF Tx/Rx in progress, Call terminated, Communication dropped

Remove VCC

TOBY-L100 Switch ON:

• PWR_ON

Not

powered

Power off

ActiveConnected Idle

TOBY-L100 Switch OFF:

• AT+CPWROFF

• RESET_N

MPCI-L1 Switch OFF:

• Remove 3.3Vaux

Apply

VCC

Operating Mode Description Transition between operating modes

Connected-Mode RF Tx/Rx data connection is in progress.

The module is prepared to accept data signals from an external device unless power saving configuration is enabled by AT+UPSV (see TOBY-L1 / MPC I-L1 series AT Commands Manual [3]).

Table 6: TOBY-L1 and MPCI-L1 series modules operating modes description

When a data connection is initiated, the TOBY-L1 and MPCI-L1 modules enter connected-mode from idle-mode.

If power saving configuration is enabled by the AT+UPSV command, the module automatically switches from connected to idle-mode whenever possible and the module wakes up from idle to connected mode in case of necessary RF data Transmission/Reception.

When a data connection is terminated, the module returns to the idle-mode.

Figure 3 describes the TOBY-L1 and MPCI-L1 series modules’ transitions between the different operating modes.

Figure 3: TOBY-L1 and MPCI-L1 series modules operating modes transitions

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Data Sheet [2].

The maximum average current consumption can be

1.5 Supply interfaces

1.5.1 Module supply input (VCC or 3.3aux)

TOBY-L1 series modules must be supplied via the three VCC pins, and MPCI-L1 modules are supplied via the five

3.3Vaux pins. All supply voltages used inside the modules are generated from the VCC or the 3.3aux supply input by integrated voltage regulators, including V_BCKP supply, V_INT digital interface supply and VSIM or UIM_PWR SIM interface supply.

The current drawn by the TOBY-L1 and MPCI-L1 series modules through the VCC or 3.3Vaux pins can vary by several orders of magnitude depending on operation mode and state. It can change from the high current consumption during LTE transmission at maximum RF power level in connected-mode (as described in the chapter 1.5.1.2), to the low current consumption during low power idle-mode with the power saving configuration enabled (as described in the chapter 1.5.1.3).

1.5.1.1 VCC or 3.3Vaux supply requirements

Table 7 summarizes the requirements for the VCC or 3.3Vaux modules supply. Refer to chapter 2.2.1 for all the suggestions to properly design a VCC or 3.3Vaux supply circuit compliant to the requirements listed in Table 7.

The supply circuit affects the RF compliance of the device integrating TOBY-L1 and MPCI-L1

series modules with applicable required certification schemes as well as antenna circuit design. Compliance is guaranteed if the requirements summarized in the Table 7 are fulfilled.

Item Requirement Remark

VCC or 3.3Vaux

nominal voltage

VCC or 3.3Vaux current

VCC or 3.3Vaux voltage ripple during RF transmission

Table 7: Summary of VCC and 3.3Vaux supply requirements

Within VCC or 3.3Vaux normal operating range: Refer to “Supply/Power pins” section in the TOBY-L1

series Data Sheet [1] or in the MPCI-L1 series Data Sheet [2].

Support with adequate margin the highest averaged current consumption value in connected mode conditions specified for VCC in TOBY-L1 series Data Sheet [1]

Noise in the supply has to be minimized.

or specified for 3.3Vaux in MPC I-L1 series

The module cannot be switched on if the supply voltage value is below the minimum limit of the operating range.

greater than the specified value according to the actual antenna mismatching, temperature, and supply voltage. Section 1.5.1.2 describes the connected-mode current.

High supply voltage ripple values during LTE transmission in connected-mode directly affect the RF compliance with applicable certification schemes.

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Time

[ms]

Current [mA]

300

200

100

500

400

600

700

Current consumption

depends on TX power

and actual antenna load

1 Slot

1 Resource Block

(0.5 ms)

1 LTE Radio Frame

(10 ms)

800

900

1.5.1.2 VCC and 3.3Vaux current consumption in connected-mode

During a LTE connection, the module can transmit and receive continuously due to LTE radio access technology. The current consumption is strictly dependent on the transmitted RF output power, which is always regulated by

network commands. These power control commands are logically divided into a slot of 0.5 ms (time length of one Resource Block), thus the rate of power change can reach a maximum rate of 2 kHz.

Figure 4 shows an example of the module current consumption profile versus time in LTE connected-mode. Detailed VCC or 3.3Vaux current consumption values can be found in the TOBY-L1 series Data Sheet [1] or in the MPCI-L1 series Data Sheet [2].

Figure 4: An example VCC / 3.3Vaux current consumption profile versus time during LTE connection

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~50 ms

IDLE MODE ACTIVE MODE IDLE MODE

Active Mode

Enabled

Idle Mode

Enabled

~0.27-2.51 s

IDLE MODE

~50 ms

ACTIVE MODE

Time [s]

Current [mA]

Time [ms]

Current [mA]

Enabled

200

100

300

200

100

300

1.5.1.3 VCC and 3.3Vaux current consumption in cyclic idle/active mode (power saving enabled)

The power saving configuration is by default disabled, but it can be enabled using the AT+UPSV command (refer to TOBY-L1 series AT Commands Manual [3]). When power saving is enabled, the module automatically enters the low power idle-mode whenever possible, reducing current consumption.

During low power idle-mode, the module processor runs with 32 kHz reference clock frequency. When the power saving configuration is enabled and the module is registered or attached to a network with

connected-mode not enabled, the module automatically enters the low power idle-mode whenever possible, but it must periodically monitor the paging channel of the current base station (paging block reception), in accordance to LTE system requirements. When the module monitors the paging channel, it wakes up to the active-mode, to enable the reception of paging block. In between, the module switches to low power idle-mode. This is known as LTE discontinuous reception (DRX).

The module processor core is activated during the paging block reception, and automatically switches its reference clock frequency from 32 kHz to the 26 MHz used in active-mode.

The time period between two paging block receptions is defined by the network. This is the paging period parameter, fixed by the base station through broadcast channel sent to all users on the same serving cell.

The time interval between two paging block receptions can be from 320 ms (DRX = 5, length of 2 = 32 x 10 ms = 320 ms) up to 2560 ms (DRX = 8, length of 2

radio frames = 256 x 10 ms = 2560 ms).

radio frames

Figure 5 illustrates a typical example of the module current consumption profile when power saving is enabled. The module is registered with network, automatically enters the low power idle-mode and periodically wakes up to active-mode to monitor the paging channel for the paging block reception. Detailed current consumption values can be found in TOBY-L1 series Data Sheet [1] or in MPCI-L1 series Data Sheet

[2].

Figure 5: An example VCC / 3.3Vaux current consumption profile versus time with power saving enabled and module registered with the network: the module is in idle-mode and periodically wakes up to active-mode to monitor the paging channel

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ACTIVE MODE

0.32-2.56 s

Paging period

Time [s]

Current [mA]

Time [ms]

Current [mA]

Enabled

200

100

300

200

100

300

1.5.1.4 VCC and 3.3Vaux current consumption in fixed active-mode (power saving disabled)

When power saving is disabled, the module does not automatically enter the low power idle-mode whenever possible: the module remains in active-mode. Power saving configuration is by default disabled. It can also be disabled using the AT+UPSV command (refer to TOBY-L1 series AT Commands Manual [3] for detail usage).

The module processor core is activated during idle-mode, and the 26 MHz reference clock frequency is used. It would draw more current during the paging period than that in the power saving mode.

Figure 6 illustrates a typical example of the module current consumption profile when power saving is disabled. In such case, the module is registered with the network and while active-mode is maintained, the receiver is periodically activated to monitor the paging channel for paging block reception.

Figure 6: An example VCC / 3.3Vaux current consumption profile versus time with power saving disabled and module registered with the network: active-mode is always held and the receiver is periodically activated to monitor the paging channel

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Baseband

Processor

VCC

V_BCKP

Linear

LDO

Power

Management

TOBY-L1 series

32 kHz

RTC

Baseband

Processor

VCC

V_INT

Switching

Step-Down

Power

Management

TOBY-L1 series

Digital I/O

1.5.2 RTC supply output (V_BCKP)

V_BCKP output pin is not accessible on MPCI-L1 series modules.

The V_BCKP output pin of the TOBY-L1 series module is connected to an internal 2.5 V supply with low current capability (refer to TOBY-L1 series Data Sheet [1]). This supply is internally generated by a linear LDO regulator integrated in the Power Management Unit, as shown in Figure 7. The output of this regulator is always enabled when the main module voltage supply applied to the VCC pins is within the valid operating range.

Figure 7: TOBY-L1 modules’ RTC supply output (V_BCKP) simplified block diagram

1.5.3 Generic digital interfaces supply output (V_INT)

V_INT output pin is not accessible on MPCI-L1 series modules.

The V_INT output pin of the TOBY-L1 series module is connected to an internal 1.8 V supply with current capability (refer to TOBY-L1 series Data Sheet [1]). This supply is internally generated by a switching step-down regulator integrated in the Power Management Unit and it is internally used to source the digital I/O interfaces of the TOBY-L1 series module, as described in Figure 8. The output of this regulator is enabled when the module is switched on and it is disabled when the module is switched off.

Figure 8: TOBY-L1 modules’ generic interfaces supply output (V_INT) simplified block diagram

The switching regulator operates in Pulse Width Modulation (PWM) mode for greater efficiency at high output loads and it automatically switches to Pulse Frequency Modulation (PFM) power save mode for greater efficiency at low output loads.

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Baseband Processor

PWR_ON

TOBY

-L1 series

Power-on

Power

Management

Power-on

1.6 System function interfaces

1.6.1 Module power-on

The PWR_ON input pin is not accessible on MPCI-L1 modules.

TOBY-L1 series modules can be switched on in one of these ways:

• When the module is in not-powered mode (i.e. switched off with VCC supply not applied), it can be

switched on by applying the VCC supply with the PWR_ON input pin forced to the low level before the start of the VCC supply rising edge and then held low for at least 5 seconds after that the VCC supply has reached the valid operating range.

• When the module is in power-off mode (i.e. switched off with valid VCC supply applied), it can be switched

on forcing a low level on the PWR_ON pin, normally high with external pull-up, for at least 5 seconds.

As described in Figure 9, there is no internal pull-up resistor on the PWR_ON pin of TOBY-L1 modules. The pin has high input impedance and is weakly pulled to the high level by the internal circuit. Therefore the external circuit must be able to hold the high logic level stable, e.g. providing an external pull-up resistor (for further design-in guidelines refer to chapter 2.3.1). The PWR_ON input voltage thresholds are different from the other generic digital interfaces. Detailed electrical characteristics are described in TOBY-L1 series Data Sheet [1].

Figure 9: TOBY-L1 series PWR_ON input description

MPCI-L1 series modules, when in not-powered mode (i.e. switched off with the 3.3Vaux supply not applied), can be switched on in one of these ways:

• Rising edge on the 3.3Vaux supply input to a valid voltage for module supply, so that the module switches

on applying a proper 3.3Vaux supply within the normal operating range

• Alternately, PERST# pin can be held to the low level during the 3.3Vaux rising edge, so that the module

switches on releasing the PERST# pin when 3.3Vaux module supply voltage stabilizes at its proper nominal value within the normal operating range.

For more pin information and electrical characteristics, refer to the TOBY-L1 series Data Sheet [1] and the

MPCI-L1 Data Sheet [2].

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VCC

V_BCKP

RESET_N

PWR_ON

V_INT

Internal Reset

System State

Digital Pins State Operational

OFF

Tristate

Internal Reset

Internal Reset → Operational

Sta rt-up

event

Sta rt of interface

configuration

PWR_ON

can be se t high

0 ms

~6 ms

5 s

~5 ms

~20 s

All interfaces

are configured

Figure 10 shows TOBY-L1 module power-on sequence from power-off mode, describing the following phases:

• The PWR_ON input is set low, representing the start-up event.

• All the module digital pins are held in tri-state until all the internal LDO voltage regulators are turned on.

• The internal reset signal is held low: the baseband core and all the digital pins are held in reset state.

• When the internal reset signal is released, the configuration of the module interfaces starts: any digital pin is

set in a proper sequence from the reset state to the default operational configured state. The duration of this pins’ configuration phase differs within generic digital interfaces and the USB interface due to specific host / device enumeration timings.

• The PWR_ON input can be released to the high logical level after at least 5 seconds.

• The module is fully ready to operate after all interfaces are configured.

Figure 10: TOBY-L1 power-on sequence description

The Internal Reset signal is not available on a module pin, but the application can monitor the V_INT pin

to sense start of the TOBY-L1 series module power-on sequence.

Before switching on the generic digital interface supply source (V_INT) of the module, no voltage driven

by an external application should be applied to any generic digital interface of the module.

Before a TOBY-L1 series module is fully ready to operate, the host application processor should not send

any AT command over the AT communication interface (USB) of the module.

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3.3Vaux

PERST#

Internal Reset

System State

Digital Pins State Operational

OFF

Tristate

Internal Reset

Internal Reset → Operational

Sta rt-up

event

Sta rt of interface

configuration

0 ms

~6 ms

~5 ms

~20 s

All interfa ces

are configured

Figure 11 shows MPCI-L1 modules power-on sequence from not-powered mode, describing these phases:

• The external supply is applied to 3.3Vaux module supply inputs, representing the start-up event.

• PERST# pins rise suddenly to high logic level due to internal pull-ups

• All the module digital pins are held in tri-state until all the internal LDO voltage regulators are turned on.

• The internal reset signal is held low: the baseband core and all the digital pins are held in reset state.

• When the internal reset signal is released, the configuration of the module interfaces starts: any digital pin is

• The module is fully ready to operate after all interfaces are configured.

Figure 11: MPCI-L1 series power-on sequence description

The Internal Reset signal is not available on a module pin, but the host application can monitor the USB

interface to sense the start of the MPCI-L1 series module power-on sequence: the module, as USB device, informs the host of the attach event via a reply on its status change pipe for proper bus enumeration process according to Universal Serial Bus Revision 2.0 specification [4].

Before a MPCI-L1 series module is fully ready to operate, the host application processor should not send

any AT command over the AT communication interface (USB) of the module.

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1.6.2 Module power-off

TOBY-L1 modules can be properly switched off by:

• AT+CPWROFF command (see TOBY-L1 / MPCI-L1 series AT Commands Manual [3]). The current parameter

settings are saved in the module’s non-volatile memory and a proper network detach is performed.

The MPCI-L1 series modules do not switch off by the AT+CPWROFF command as the TOBY-L1 modules,

but the AT+CPWROFF command causes a reset (reboot) of the module due to the MPCI-L1 module’s internal configuration: the AT+CPWROFF command performs the storage of the actual parameter settings in the non-volatile memory of MPCI-L1 modules and it performs a network detach, with a subsequent reset (reboot) of the module.

An abrupt under-voltage shutdown occurs on TOBY-L1 and MPCI-L1 series modules when the VCC or 3.3Vaux module supply is removed. If this occurs, it is not possible to perform the storage of the current parameter settings in the module’s non-volatile memory or to perform the proper network detach.

It is highly recommended to avoid an abrupt removal of the VCC supply during TOBY-L1 modules normal

operations: the power off procedure must be started by the AT+CPWROFF command, waiting the command response for a proper time period, and then a proper VCC supply has to be held at least until the end of the internal power off sequence, which occurs when the generic digital interfaces supply output (V_INT) is switched off by the module.

It is highly recommended to avoid an abrupt removal of the 3.3Vaux supply during MPCI-L1 modules

normal operations: the power off procedure must be started by setting the MPCI-L1 module to the minimum functionality by the AT+CFUN=0 command, waiting the command response for a proper time period, and then the 3.3Vaux supply can be removed.

An abrupt hardware shutdown occurs on TOBY-L1 series modules when a low level is applied on the RESET_N pin for at least 1 second. In this case, the current parameter settings are not saved in the module’s non-volatile memory and a proper network detach is not performed.

It is highly recommended to avoid an abrupt hardware shutdown of the module by forcing a low level on

the RESET_N input pin during module normal operation: the RESET_N line should be set low only if reset or shutdown via AT commands fails.

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VCC

V_BCKP

PWR_ON

RESET_N

V_INT

Internal Reset

System State

BB Pads Sta te Operational

OFF

Tristate / Floating

Operational → Tristate

AT+CPWROFF

sent to the module

replied by the module

VCC

can be removed

3.3Vaux

PERST#

Internal Reset

System State

BB Pads Sta te

OFF

Tristate / Floating

Operational

AT+CFUN=0

sent to the module

replied by the module

3.3Vaux

can be removed

Figure 12 describes the TOBY-L1 power-off sequence by means of AT+CPWROFF with the following phases:

• When the +CPWROFF AT command is sent, the module starts the switch-off routine.

• The module replies OK on the AT interface: the switch-off routine is in progress.

• At the end of the switch-off routine, all the digital pins are tri-stated and all the internal voltage regulators

are turned off, including the generic digital interfaces supply (V_INT), except the RTC supply (V_BCKP).

• Then, the module remains in power-off mode as long as a switch on event does not occur (applying a

proper low level to PWR_ON pin), and enters not-powered mode if the supply is removed from VCC pins.

Figure 12: TOBY-L1 series power-off sequence description

The Internal Reset signal is not available on a module pin, but the application can monitor the V_INT pin

to sense the end of the power-off sequence.

Figure 13 describes the MPCI-L1 power-off procedure with the following phases:

• When the AT+CFUN=0 command is sent, the module starts the minimum functionality setting routine.

• The module replies OK on the AT interface: the module is set in the minimum functionality mode.

• Then, the module remains in the minimum functionality mode and enters not-powered mode if the supply is

removed from the 3.3Vaux pins.

Figure 13: MPCI-L1 series power-off procedure description

The duration of each phase in the TOBY-L1 and MPCI-L1 series modules’ switch-off routines can largely

vary depending on the application / network settings and the concurrent module activities.

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Baseband Processor

RESET_N

TOBY-L1 series

Reset

10k

Baseband Processor

PERST#

MPCI-L1 series

Reset

10k

2.5V

1.6.3 Module reset

TOBY-L1 and MPCI-L1 series modules can be properly reset (rebooted) by:

• AT+CFUN command (see the TOBY-L1/ MPCI-L1 series AT Commands Manual [3]).

MPCI-L1 series modules can be additionally properly reset (rebooted) by:

• AT+CPWROFF command (see TOBY-L1/ MPCI-L1 series AT Commands Manual [3]): the behavior differs

than TOBY-L1 series, as MPCI-L1 modules will reboot rather than remain switched off due to MPCI-L1 modules’ internal configuration.

Implementing the procedures listed above, a “software” reset of the module is executed. During the process, the current parameter settings are saved in the module’s non-volatile memory and a proper network detach is performed.

An abrupt hardware shutdown occurs on TOBY-L1 modules when a low level is applied on the RESET_N input pin for at least 1 second. Then, a low level has to be applied on the PWR_ON input pin for at least 5 seconds to force a reboot of the module. Implementing this procedure, the current parameter settings are not saved in the module’s non-volatile memory and a proper network detach is not performed.

An abrupt hardware reset (reboot) occurs on MPCI-L1 modules when a low level is applied on the PERST# input pin for at least 1 second. Implementing this procedure, the current parameter settings are not saved in the module’s non-volatile memory and a proper network detach is not performed.

It is highly recommended to avoid an abrupt hardware shutdown / reset of the module by forcing a low

level on the RESET_N or PERST# input during modules normal operation: the RESET_N or PERST# line should be set low only if reset or shutdown via AT commands fails.

The electrical characteristics of RESET_N and PREST# input pins are different from the other digital interfaces. As described in Figure 14, both RESET_N and PERST# lines are pulled high to the internal 2.5 V rail (V_BCKP). Therefore an external pull-up is not required. For the detailed electrical characteristics refer to TOBY-L1 series Data Sheet [1] or MPCI-L1 series Data Sheet [2].

Figure 14: TOBY-L1 and MPCI-L1 series reset input (RESET_N / PERST#) description

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+ 63 hidden pages

Ublox TOBY-L1 series, MPCI-L1 series System Integration Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Preface

Contents

1 System description

1.1 Overview

1.2 Architecture

1.2.1 Internal blocks

RF section

Baseband and Power Management section

1.3 Pin-out

1.3.1 TOBY-L1 series pin assignment

1.3.2 MPCI-L1 series pin assignment

1.4 Operating modes

1.5 Supply interfaces

1.5.1 Module supply input (VCC or 3.3aux)

1.5.1.1 VCC or 3.3Vaux supply requirements

1.5.1.2 VCC and 3.3Vaux current consumption in connected-mode

1.5.1.3 VCC and 3.3Vaux current consumption in cyclic idle/active mode (power saving enabled)

1.5.1.4 VCC and 3.3Vaux current consumption in fixed active-mode (power saving disabled)

1.5.2 RTC supply output (V_BCKP)

1.5.3 Generic digital interfaces supply output (V_INT)

1.6 System function interfaces

1.6.1 Module power-on

1.6.2 Module power-off

1.6.3 Module reset