UCLOUDLINK NETWORK TECHNOLOGY GLMM18A02 User Manual

uCloudlink M2 Mini PCIe-C

Hardware Design Guide

ＧＬＭＭ１８Ａ０２　

LTE Module

Version: uCloudlink M2 Mini PCIe-C _Hardware Design Guide _V1.0

Date: 05/22/2018

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

uCloudlink was found by some senior international communications experts. uCloudlink has its

headquarter, R&D center and call center located in Shenzhen, various branch offices and operations

centers in the United States, United Kingdom and Hong Kong(China).

uCloudlink has been focusing on Cloud SIM technology and providing more convenient, fast and

cheap data services for mobile users and enterprise users with the coverage more than 100 countries

and regions globally so they can access the Internet at local rate anywhere, anytime. Meanwhile,

setting up the world’s leading Cloud SIM PaaS brings the benefits of winning and serving customers

with lower cost to these global mobile data providers. uCloudlink has achieved success in the wireless

industry by providing Internet access for more than a hundred million users. Now we are on our way

to enter Internet of Things (IoT) market with the aim to provide global connectivity for billion IoT links.

M2 is the M2M module based on Cloud SIM technology launched by uCloudlink providing SIM-

free wireless access services for Industrial IoT (IIoT), Connected Car, Vending Machine, Advertising

Machine and POS Machine and more across different network operators.

uCloudlink always strives to provide our customers with the fastest and most comprehensive

services. Should you have any questions, please contact our headquarter in Shenzhen as follows:

Shenzhen uCloudlink Network Technology Co., Ltd

Address: 3rd Floor, A Zone, Building 1, High-tech Zone, Shenzhen.

E-mail: [e-mail]

Tel: [phone]

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Preface

This guide can help our customers to design their products. They shall design the product

according to the specifications and parameters contained herein. We shall not be liable or responsible

for any loss or damage resulting from their improper operation. We reserve the right to make any

updates and any other modifications to this manual at any time without prior notice.

Copyright

No part of this manual may be reproduced or transmitted in any form or by any means without

prior written consent of Shenzhen uCloudlink Network Technology Co., Ltd (“uCloudlink”).

Copyright © Shenzhen uCloudlink Network Technology Co, Ltd 2018. All Rights Reserved

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Revision History

Revision Date Author Description

Max Wei

1.0 2018/05/22
Ji Yongshun

Initial Release

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Contents

Revision History ............................................................................................................................ 4

Contents ....................................................................................................................................... 5

Table Index ................................................................................................................................... 6

Figure Index .................................................................................................................................. 7

1 Introduction ............................................................................................................................. 8

1.1 Safety Information ...................................................................................................................... 8

2 Product Overview ..................................................................................................................... 9

2.1 About This Chapter ..................................................................................................................... 9

2.2 Product Introduction................................................................................................................... 9

2.3 Key features ............................................................................................................................. 10

2.4. Function Overview ................................................................................................................... 13

3. Interface Application ............................................................................................................. 14

3.1. About This Chapter .................................................................................................................. 14

3.2. M2 Module Interface ............................................................................................................... 14

3.3. Power Interface ........................................................................................................................ 19

3.4. UART Interface ......................................................................................................................... 20

3.5. USIM Card Interface ................................................................................................................. 21

3.6. USB Interface ........................................................................................................................... 22

3.7. Signal Control Signal ................................................................................................................ 23

3.7.1. W_DISABLE# Signal ........................................................................................................ 24

3.7.2. PERST# Signal ................................................................................................................. 24

3.7.3. LED_WWAN# Signal ....................................................................................................... 25

3.7.4. WAKEUP_IN and WAKEUP_OUT Signal ......................................................................... 25

3.8. Antenna Interface .................................................................................................................... 26

3.8.1. Antenna Requirements .................................................................................................. 26

4 Electrical Interface and RF Specifications .............................................................................. 27

4.1. About This Chapter ............................................................................................................... 27

4.2. Power Supply Ratings ............................................................................................................ 27

4.3. I/O Interface .......................................................................................................................... 28

4.4. RF Specifications .................................................................................................................... 28

4.5. WIFI/BT Receiving Sensitivity .................................................................................................... 29

4.6. Electrostatic Discharge Characteristics ................................................................................. 30

5 Mechanical Dimensions ........................................................................................................ 31

5.1. Outer Dimension of M2 Module ........................................................................................... 31

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

5.2. Standard Dimension .............................................................................................................. 31

6 Appendix Terms and Abbreviation ........................................................................................ 33

Table Index

Table 1 M2 module features................................................................................................................ 9

Table 2 Key Features............................................................................................................................ 9

Table 3 Definition of I/O Parameters ................................................................................................. 13

Table 4 Definition of pins on the M2 module..................................................................................... 14

Table 5 Definition of power interfaces............................................................................................... 17

Table 6 UART interface signals........................................................................................................... 18

Table 7 USIM Card interface signals................................................................................................... 19

Table 8 Definition of USB Interfaces..................................................................................................... 20

Table 9 Definition of the pins on the signal control interface.............................................................. 22

Table 10 Operating status of radio frequency..................................................................................... 23

Table 11 Network status indication..................................................................................................... 24

Table 12 WAKEUP_IN and WAKEUP_OUT pin..................................................................................... 24

Table 13 Antenna requirements.......................................................................................................... 25

Table 14 Input power range................................................................................................................ 26

Table 15 I/O Interface.......................................................................................................................... 27

Table 16 RF output power.................................................................................................................... 27

Table 17 RF receiving sensitivity........................................................................................................ 28

Table 18 ESD Characteristics............................................................................................................... 29

Table 19 Terms and Abbreviations..................................................................................................... 32

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Figure Index

Figure 1 Functional Diagram ............................................................................................................. 12

Figure 2 Pin Assignment (Top View)................................................................................................... 16

Figure 3 Recommended Power Circuit of the M2 module................................................................. 17

Figure 4 Recommended Power Circuit of Level Match...................................................................... 18

Figure 5 Circuit of the 6-pin USIM Card interface.............................................................................. 19

Figure 6 Recommended Circuit of USB Interface............................................................................... 21

Figure 7 Timing sequence of module reset........................................................................................ 23

Figure 8 Driving circuit....................................................................................................................... 24

Figure 9 Antenna Interface................................................................................................................. 25

Figure 10 Outer dimension of the M2 module.................................................................................... 30

Figure 11 Standard dimension of MINI PCI EXPRESS card.................................................................. 31

Figure 12 Mini PCI Express Connector ................................................................................................ 31

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

signal strength.

1 Introduction

This document gives a general introduction of key features, functions, interface description,

electrical characteristics and RF characteristics and layout of the M2 Mini PCIe-C module (“M2”).

1.1 Safety Information

The following safety precautions shall be observed to ensure your safety and protect your device

and working environment from potential damage.

Road safety comes first! Using a mobile device while driving is prohibited even
it has speakerphone. Please pull over your car in a safe place first then make
or receive a call.

Switch your phone off before take-off. Electromagnetic waves emitted by your
phone may affect the electronic navigation equipment in the aircraft. The
ignorance of this tip may affect fight safety or even break the law.

Be aware if there are any restrictions on mobile device use during a hospital or
healthcare facility. All medical equipment may be susceptible to radio frequency
interference, which could affect performance, so you shall switch off your
mobile device.

It cannot guarantee that mobile device can access Internet under any
circumstances. For example, when you run out of credits or insert invalid SIM
card. For any emergency situations, remember to make the emergency call and
make sure your device is powered on and you are in an area with known-good

Your mobile device would send and receive radio frequency signal when
switched on. The interference occurs when you place the device near
television, radio, computer and other electronic devices.

Do not place your mobile device near inflammable gas. Always switch off your
mobile device near gas station, oil depot, chemical plant or explosion areas.
Operating the mobile device in potential explosion areas has risk.

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

2 Product Overview

2.1 About This Chapter

M2 module is the LTE module with the PCI Express Mini Card 1.2 standard interface

providing FDD-LTE/TDD-LTE/WCDMA /GSM network connections and compatible

embedded operating system, such as Linux or Android.

M2 module is available for the following occasions:

 Tablet, notebook
 Remote monitoring
 Car-mounted device
 Wireless POS machine
 Intelligent metering
 Wireless router, exchanger
 Other wireless devices

This chapter gives a brief introduction of the M2 module including:

with

 Product Introduction
 Key Features
 Function Overview

2.2 Product Introduction

The M2 module is only available with Data Only version.

Table 1 M2 module features

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Name Description

uCloudlink M2 Mini PCIe-C LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B19/B20/B26/B28

TDD-LTE: B34/B38/B39/B40/B41

WCDMA: B1/B2/B4/B5/B8

GSM850/900/1800 /1900

２．４Ｇ　ＷｉＦｉ：８０２．１１　ｂ／ｇ／ｎ

/BT

GPS

2.3 Key features

The following table describes detailed features of the M2 module.

Table 2 key features

Feature Description

Mini PCle Interface Standard PCI Express Mini Card 1.2 interface

Power Voltage 3.3~3.6V

Class 4 (33dBm±2dB) for GSM900

Class 1 (30dBm±2dB) for DCS1800

Class E2 (27dBm±3dB) for GSM900 8-PSK

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

Output Power

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

Class 3 (23dBm±2dB) for LTE FDD bands

Class 3 (23dBm±2dB) for LTE TDD bands

Up to non-CA CAT7

Support 1.4~20MHz RF bandwidth

LTE Support downlink multi-user MIMO

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

FDD: Max uplink speed 50Mbps, max downlink speed 150Mbps

TDD: Max uplink speed 35Mbps, max downlink speed 130Mbps

Support 3GPP R8 DC-HSPA+

Support 16-QAM, 64-QAM and QPSK modulation

WCDMA 3GPP R6 CAT6 HSUPA: max uplink speed 5.76Mbps

3GPP R8 CAT24 DC-HSPA+: max downlink speed 42Mbps

R99:

CSD transmission speed: 9.6kbps, 14.4kbps

GSM/GPRS/EDGE

Internet Protocol

GPRS:

GPRS multi-slot class 12 by default

Encoding: CS-1/CS-2/CS-3 and CS-4

Up to 4 RX time slots per frame

EDGE:

Support EDGE multi-slot class 12 by default

Support different modulation and encoding of GMSK and 8-PSK

Support uplink and downlink encoding CS 1-4 and MCS 1-9

Support TCP/UDP/PPP/FTP/HTTP/SMTP/MMS/NTP/PING/QMI

Support PAP (Password Authentication Protocol) and CHAP

(Challenge Handshake Authentication Protocol)

USIM Interface Support USIM/SIM: 1.8V and 3.0V

UART Interface

Support RTS and CTS hardware flow control

Baud rate can reach up to 230400bps, 115200 bps by default

Used for AT command and data transmission

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Compliant with USB2.0 specification (slave only)，the data transfer can

reach up to 480 Mbps.

USB Interface

Used for firmware upgrade, AT command, data transmission, log

output;

USB driver: Support Windows 7, Windows 8/8.1, Linux 2.6 or Later,

Android 4.0/4.2/4.4/5.0

AT Commands Compliant with 3GPP TS 27.007, 27.005 and enhanced AT commands

Support main antenna pad, diversity antenna pad and WIFI/BT antenna

Antenna Interface

pad

WIFI Protocol:

802.11 b/g/n

Dimensions (L x W x H): 51.0 mm ×3 0.0 mm×4 .9 mm

Dimension and weight

Weight: about 11 g

Normal operating temperature: -30°C ~+75°C 1)

Operating Temperature

Extended operating temperature: -40°C ~ +85°C 2)

Firmware upgrade USB interface or DFOTA interface

RoHS All hardware components meet the EU RoHS standard

Note

1)

when M2 module works within this temperature range, and all its RF performances comply

with the 3GPP standard requirements.

2)

when M2 module works within this temperature range, and can still work properly with data

transmission, irretrievable malfunctions won’t occur; radio spectrum and network won’t be

affected. And only few features may be out of the 3GPP standard such as output power. When

the temperature is back within normal range, all features properly resume.

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2.4 Function Overview

Figure 1 shows the functional diagram of the M2 module. The major functions are following:

 Support line 1 of USIM card interface
 Support line 1 of USIM 2.0 interface
 Support line 1 of UART interface
 Support LED status indication
 Support RF shut-down feature
 Support external reset feature
 Support sleep control and sleep indication
 Support 3 RF antenna interfaces

uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

VBAT

Main

Mini PCI Express Interface

UART

USB

USIM

uCloudlink
M2 Mini
PCIe-C

Antenna

Antenna

Interface

Antenna

Interface

Antenna

WIFI BT

Antenna

Diversity
Antenna

WAKEUP_IN

WAKEUP_OUT
W_DISABLE#

PERST#

LED_WWAN#

Figure 1 Functional Diagram

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

3 Interface Application

3.1 About This Chapter

This chapter mainly gives the external application interfaces of the M2 module, including:

 Power Interface
 UART Interface

 USIM Interface
 USB Interface
 Control Signal

 Antenna Interface

3.2 M2 Module Interface

3.2.1 Interface Definition

The interface of the M2 module is the standard Mini PCI Express interface. For details about

the 52-pin interfaces, see table 3 I/O parameters definition.

Table 3 Definition of I/O parameters

Mark Description

IO Bidirectional input/output

DI Digital Input

DO Digital Output

AI Analog Input

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

AO Analog Output

PI Power Input

PO Power Output

OC Open Collector

Table 4 Definition of pins on the M2 module

Pin No. Status Pin Name I/O Description Note

Audio

1 WAKE# MIC_P* AI

Input(Positive)

2 3.3Vaux VBAT PI Power Input

Audio

3 COEX1 MIC_N* AI

Input(Negative)

4 GND GND

Ground

Audio

5 COEX2 SPK_P* AO

Output(Positive)

6 1.5V NC — —

Audio

7 CLKREQ# SPK_N* AO

Output(Negative)

USIM Power

8 UIM_PWR USIM_VDD PO

Output

9 GND GND

Ground

10 UIM_DATA USIM_DATA IO USIM data signal

11 REFCLK- VDD_EXT PO 1.8V Power Output

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12 UIM_CLK USIM_CLK DO USIM Clock Signal

13 REFCLK+ RESERVED — Reserved

14 UIM_RESET USIM_RST DO USIM Reset Signal

15 GND GND

Ground

16 UIM_VPP RESERVED — Reserved

17 RESERVED RESERVED — Reserved

18 GND GND

Ground

Module Sleep

19 RESERVED WAKEUP_IN DI

Control Pin

Allows to

sleep when

low level

Disable RF

Valid when

20 W_DISABLE# W_DISABLE# DI

21 GND GND

Communication

Ground

low level

Valid when

22 PERST# PERST# DI Reset Control Pin

low level

Module receiving

23 PERn0 UART_RXD DI

end

24 3.3Vaux VBAT PI Power Input

Module request

25 PERp0 UART_RTS DO

to send

26 GND GND

Ground

27 GND GND

28 1.5V UART_CTS DI

Ground

Module request

to delete

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

29 GND GND

Ground

Module Carrier

30 SMB_CLK UART_DCD DO

Sense

Module sending

31 PETn0 UART_TXD DO

end

Module Sleep

32 SMB_DATA WAKEUP_OUT DO

Indication

Valid when

33 PETp0 PERST# DI Reset Control Pin

low level

34 GND GND

35 GND GND

Ground

Ground

36 USB_D- USB_DM IO USB Differential Signal (-)

37 GND GND

Ground

38 USB_D+ USB_DP IO USB Differential Signal (+)

39 3.3Vaux VBAT PI Power Input

40 GND GND

Ground

41 3.3Vaux VBAT PI Power Input

42 LED_WWAN# LED_WWAN# OC Status Light Indication

43 GND GND

Ground

44 LED_WLAN# RESERVED — Reserved

45 RESERVED RESERVED — Reserved

46 LED_WPAN# UART_DTR DI DTE is ready

47 RESERVED RESERVED — Reserved

48 1.5V NC — —

49 RESERVED RESERVED — Reserved

50 GND GND

Ground

51 RESERVED RESERVED — Reserved

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

52 3.3Vaux VBAT PI Power Input

Note

Besides USIM interfaces, the voltage domain of other digital interfaces is 1.8V, and the

1

USIM interface is available with 1.8V and 3.0V.

2. Please suspend all of NC, RESERVED and unused pins.

3. “*” indicates the audio feature is not available and reserved function.

3.2.2 Pin Assignment

The following figure shows the pin assignment of the M2 module, and the top face is for sticking

antenna connector and opposite face is the BOT.

Figure 2 Pin Assignment (Top View)

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

3.3 Power Interface

Table 5 lists the definitions of the pins on the power supply interface.

Table 5 Definition of power interfaces

Pin No. Pin Name I/O Description

2, 24, 39 , 41, 52 VBAT PI 3.3~3.6V Power Input

4, 9, 15, 18, 21,

26, 27, 29, 34 ,35,

GND

Ground

37, 40, 43, 50

When the M2 module works normally, power is supplied through the VBAT pins. When it works

at EGSM900 mode and transmits current may reach the transient peak value of about 2.5 A. To make

sure that the voltage does not decrease below 3.3V, a low-dropout (LDO) regulator or switch power

with current output of more than 2.5 A is recommended for external power supply. Furthermore, it is

recommended that customers add the 1000uF or above energy storage capacitor to connect in

parallel at the power interface of the M2 module. And keep the power device and power cable away

from antenna to avoid EMI interference.

Figure 3 shows the recommended power circuit of M2 module using DC-DC power supply. The

resistance accuracy of R3 and R4 is 1%. The capacitance E1 needs to use high polymer tantalum

capacitor to add the drive capability of pulse current in dialing process.

Figure 3 Recommended Power Circuit of the M2 module

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3.4 UART Interface

Table 6 lists the UART interface signals.

Table 6 UART interface signals

uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Pin No. Pin name I/O

-

Typ.(V) Description

23 UART_RXD DI 1.8V Receive data

31 UART_TXD DO 1.8V Send data

28 UART_CTS DI 1.8V Clear to Send

25 UART_RTS DO 1.8V Ready for Receive

The M2 module is available with 1-wire hardware flow control UART (DSR and R1 signal are not

supported), which supports 9600, 19200, 38400, 57600, 115200, 230400bps and the default value is

115200bps.

Figure 4 shows the recommended power circuit of level match in the 3.3V power. Pay attention

to the connection direction. The dotted circuit and full circuit can be used as reference to each other.

MCU/ARM

/TXD

/RXD

/RTS
/CTS

GND

Voltage level: 3.3V

Figure 4 Recommended Power Circuit of Level Match

VDD_EXT

10 K

VCC_MCU

4.7 K

VDD_EXT

1 nF

Module

K 10

UART_RXD

UART_TXD

1 nF

VDD_EXT

4.7 K

UART_RTS
UART_CTS

GND

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

3.5 USIM Card Interface

The signal definition of the M2 module USIM card interface is as below.

Table 7 USIM card interface signals

Pin No. Pin Name I/O Typ.(V) Description

8 USIM_VDD PO 1.8V/3.0V Output Power supply for

USIM card

10 USIM_DATA IO 1.8V/3.0V USIM/SIM Data

12 USIM_CLK DO 1.8V/3.0V USIM/SIM Clock

14 USIM_RST DO 1.8V/3.0V USIM/SIM Reset

The M2 module is available with 1.8V and 3.0V USIM/SIM card.

Figure 5 shows the circuit of the 6-pin USIM card interface.

USIM_VDD

Module

GND

USIM_VDD
USIM_RST

USIM_CLK

USIM_DATA

22 R
22 R

22 R

33 pF33pF33pF

15 K

100 nF

ESD

100 nF

USIM

卡座

VCC
RST
CLK IO

GND

VPP

GND

GND

Figure 5 Circuit of the 6-pin USIM Card Interface

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

In order to enhance the reliability and availability of the USIM card, please pay attention to

these key points:

1. The USIM socket should be placed near the USIM interface and it is recommend that PCB

circuit connecting the USIM interface to the USIM socket does not exceed 200 mm.

2. Keep USIM card signal cable away from RF antenna and module power cable.

3. The decouple capacitor of USIM_VDD should be less than 1uF and placed near the USIM socket.

4. To avoid the mutual interference between USIM_DATA and USIM_CLK, keep them away with

each other and shield them with surrounded ground including USIM_RST.

5. In order to ensure ESD protection in good performance, it is recommended to place the TVS

with stray capacitance of less than 50pF near USIM card socket.

6. It is recommended to connect the 22Ω resistors to USIM_CLK, USIM_DATA and USIM_RST to

avoid EMI interference and enhance ESD protection. Meanwhile, connecting the 33pF
capacitor in parallel to filter interference from EGSM900 RF signals, and keep these
components close to the USIM card socket.

7. USIM_DATA is pulled up internally, which is good for improving the anti-jamming capability.

When the PCB circuit of USIM card is too long or the interference is nearby, the pull-up resistor
is recommended to be placed close to the USIM socket.

3.6 USB Interface

The Pin definition of the M2 module USB interface is as below.

Table 8 Definition of the USB interface

Pin No.

36 USB_DM IO

38 USB_DP IO

Pin Name

Pad Type Description Comment

USB differential data

bus(minus)

USB differential data

bus(positive)

Require differential

impedance of 90ohm

Require differential

impedance of 90ohm

The M2 module is compliant with USB 2.0 High Speed Mode (480Mbps) and Full Speed Mode

12Mbps). And only can be used as slave device. The USB interface is mainly for AT commands, data

transfer, catch log, and software upgrade.

Figure 6 shows the circuit of the USB interface

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Module

USB_DM

USB_DP

GND

ESD Array

R1
R2

Close to Module

Figure 6 Recommended Circuit of USB Interface

R 0

0 R

MCU

USB_DM
USB_DP

GND

In order to meet the requirement for completeness of USB signal trace, R1 and R2 shall be placed

near the M2 module and ESD protection components.

Based on the USB 2.0 specification, please comply with the following requirements:

1. It is required to control the differential impendence -90ohm.

2. Do not route the USB signal trace under the following components: crystals, oscillator,

electromagnetic component and RF signal. Keep it away from interference sources and signals
susceptible to disturbance and shielding with ground.

3. If the USB interface of the M2 module is connected to the USB socket, place ESD protection

component with no more than of 2pF capacitance near the USB socket.

4. Avoid the coupled noise on the USB signal trace, keep the testing stubs as short as possible. If

possible, add resistor of 0 ohm or common mode choke to the USB signal trace.

3.7 Signal Control Signal

Table 9 lists the pins on the signal control interface.

Table 9 Definition of the pins on the signal control interface

Pin No.

20 W_DISABLE# DI 1.8V

Pin Name

Pad Type Typ.(V) Description

Disable RF communication, effective

low level (inside pull up)

Reset control, low level reset (internal

22, 33 PERST# DI 1.8V

pull up)

42 LED_WWAN# OC — Status Indication

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Resetting

Running

19 WAKEUP_IN DI 1.8V Sleep control pin (internal pull-down)

32 WAKEUP_OUT DO 1.8V Sleep indication

3.7.1 W_DISABLE# Signal

The W_DISABLE# signal can be used to disable the RF communication

,

which can controlled through hardware and software. Table 10 shows the operating status of

radio frequency.

Table 10 Operating status of radio frequency

W_DISABLE# RF status

High Level Enable RF

High Level Disable RF

Low Level Disable RF

3.7.2 PERST# Signal

PERST# signal can be used externally reset the module. PERST# 150~460ms can be pulled

down to reset the module. PERST# signal is sensitive to interference, so keep the route on the

module interface board as short as possible and shield with ground.

VBAT

PERST#

Module
Status

ms 150

V

≤ 0.5V

IL

460 ms

V IH ≥ 1.3V

Restart

Figure 7 Timing Sequence of Module Reset

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

3.7.3 LED_WWAN# Signal

The LED_WWAN# signal interface is OC output format and the max current can reach up to the
40mA. When it connects to LED externally, connects the resistor in serial. You can adjust the LED
brightness by adjusting the resistance of resistor. When it is low, the external LED lights up.

Figure 8 shows the recommended circuit of the LED_WWAN# pin.

LED_WWAN#

R

VCC

Figure 8 Driving Circuit

Check the LED_WWAN# signal network status indicator as below, when the M2 module is

successfully registered, the LED is on. When the RF is disabled, turned off or error (No SIM card

or registration failed), the LED is off.

Table 11 Network status indication

LED_WWAN# Description

Low Level（LED is on）

Successfully registered

1. No Internet or registration failed

High Impedance（LED is off）

1. W_DISABLE# pin is pulled down(disable RF)

3.7.4 WAKEUP_IN and WAKEUP_OUT Signal

WAKEUP_IN pin is the authorization signal of the M2 module entering sleep mode. WAKEUP_OUT

pin is used to wake up the external devices.

Table 12 shows the definition of the WAKEUP_IN pin and WAKEUP_OUT signal.

Table 12 WAKEUP_IN and WAKEUP_OUT pin

Pin Name Description

H: DTE Wake up Module

WAKEUP_IN

L: DTE Allows to enable sleep mode

25／35

H: Wake-up mode is on, USB and serial port are available

WAKEUP_OUT

L: Wake-up is on, USB and serial port are not available

3.8 Antenna Interface

The M2 module provides three antenna pads (WIFI BT antenna pad, main antenna pad and DIV

antenna pad) for connecting the external antennas.

uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Main Antenna Interface

WIFI BT Antenna Interface

DIV Antenna Interface

Figure 9 Antenna Interface

3.8.1 Antenna Requirements

Table 13 lists the requirements for main antenna, diversity antenna and WIFI/BT antenna.

Table 13 Antenna requirements

Type Requirements

Frequency range:

GPS

1575.42MHz

WIFI/BT/GPS

Polarization: RHCP or linear

VSWR: < 2 (Typ.)

Passive antenna gain: > 0dBi

WIFI Frequency range:2412 - 2472Hz
BT Frequency range:2402 - 2482Hz

Passive antenna gain: > 0dBi

VSWR: ≤ 2

Gain (dBi): 1

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Max input power (W): 50

uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

GSM/

WCDMA/

TD-SCDMA/

LTE

Input resistance(ohm): 50

Polarization type: vertical

Cable insertion loss: < 1dB

(GSM900, WCDMA B8, LTE B8)

Cable insertion loss: < 1.5dB

Cable insertion loss: < 2dB

4 Electrical Interface and RF Specifications

4.1 About This Chapter

This chapter describes the mainly gives the electrical interface and RF specifications of the M2

module, including:

 Power Supply Ratings
 IO Interface
 Working Current
 RF Performance
 WIFI/BT Receiving Sensitivity
 ESD Feature

4.2 Power Supply Ratings

M2 module comes with VBAT voltage with the input voltage 3.3~3.6V and the input power at

least meets the requirement of 2.3A capacity. Table shows the power range of the M2 module.

Table 14 Input Power Range

Parameter Description Min. Typ. Max. Unit

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

VBAT

Module power

3.3

3.6 V

supply

4.3 I/O Interface

Table 15 shows the I/O interface of the M2 module.

Table 15 I/O Interface

Parameter Description Min. Max. Unit

VIH High Level Input Voltage 0.7*VDDIO1) VDDIO1)+0.3 V

VIL Low Level Input Voltage -0.3 0.3*VDDIO1) V

VOH High Level Input Voltage VDDIO1)-0.5 VDDIO1) V

VOL

Low Level Input Voltage 0 0.4 V

Notes

1. The voltage of PERST# and W_DISABLE VIL

2. VDDIO voltage is 1.8V

(max)

is 0.5V.

4.4 RF Specifications

Table 16 shows the RF output power and RF receiving sensitivity of the M2 module.

Table 16 RF Output Power

Band Max Min

GSM900 33dBm±2dB 5dBm±5dB

DCS1800 30dBm±2dB 0dBm±5dB

GSM900 (8-PSK) 27dBm±3dB 5dBm±5dB

DCS1800 (8-PSK) 26dBm±3dB 0dBm±5dB

WCDMA B1/B8 24dBm+1/-3dB <-49dBm

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

LTE FDD B1/B3/B8 23dBm±2dB <-39dBm

LTE TDD B38/B39/B40/B41 23dBm±2dB <-39dBm

Table 17 RF Receiving Sensitivity

Receiving

Master set

Band

Sensitivity(Typ.)

+Diversity 3GPP(Main+Diversity)

EGSM900 -109dBm NA NA -102dBm

DCS1800 -109dBm NA NA -102dBm

WCDMA Band1 -110dBm NA NA -106.7dBm

WCDMA Band8 -110dBm NA NA -103.7dBm

LTE-FDD B1(10M) -97dBm -97dBm -101dBm -96.3dBm

LTE-FDD B3(10M) -95dBm -94dBm -96dBm -93.3dBm

LTE-FDD B8(10M) -94dBm -94dBm -97dBm -93.3dBm

LTE-TDD B38(10M) -97dBm -97dBm -97.5dBm -96.3dBm

LTE-TDD B39(10M) -97dBm -97dBm -102dBm -96.3dBm

LTE-TDD B40(10M) -97dBm -97dBm -100dBm -96.3dBm

LTE-TDD B41(10M) -96dBm -96dBm -98dBm -94.3dBm

4.5 WIFI BT Receiving Sensitivity

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

The WIFI/BT receiver is disabled by default. As the WIFI/BT antenna interface connects to the power

2.95V, it is recommended to use the active antenna suitable for the voltage.

4.6 Electrostatic Discharge Characteristics

Table 18 lists the ESD (Electrostatic Discharge) characteristics of the M2 module.

Table 18 Electrostatics discharge characteristics

Parameter Contact Discharge Air Discharge Unit

Power and grounding

+/-5 +/-10 kV

interface

Antenna Interface +/-4 +/-8 kV

USB Interface +/-4 +/-8 kV

USIM Card Interface +/-4 +/-8 kV

Other Interface s +/-0.5 +/-1 kV

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5 Mechanical Dimensions

This chapter gives the mechanical dimensions of the M2 module, including:

 Outer Dimension of the M2 module
 Standard dimension of Mini PCI Express

5.1. Outer Dimension of M2 Module

uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Figure 10 Outer Dimension of M2 Module (Unit: mm)

5.2. Standard Dimension

The M2 module comes with standard interfaces.

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

Figure 11 Standard Dimension of Mini PCI Express (Unit: mm)

Any qualified PCI Express Mini Card connectors are compatible with the M2 module. Figure 12

shows the connector 679100002 made of Molex Company.

Figure 12 Mini PCI Express Connector (Unit: mm)

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

6 Appendix Terms and Abbreviation

Table 19 Terms and Abbreviation

Abbr. Description

8-PSK 8-Phase Shift Keying

bps Bits Per Second

CS Coding Scheme

CSD Circuit Switched Data

CTS Clear To Send

DCE Data Communications Equipment (typically module)

DL Down Link

DTE Data Terminal Equipment (typically computer, external controller)

DTR Data Terminal Ready

EMC Electromagnetic Compatibility

ESD Electrostatic Discharge

FDD Frequency Division Duplexing

GLObalnayaNAvigatsionnayaSputnikovaya Sistema, the Russian Global

GLONASS

Navigation Satellite System

GMSK Gaussian Minimum Shift Keying

GNSS Global Navigation Satellite System

GPS Global Positioning System

GSM Global System for Mobile Communications

HSPA High Speed Packet Access

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PAD TYPE Input/Output

kbps KiloBitsPer Second

LED Light Emitting Diode

LTE Long Term Evolution

Mbps Million Bits Per Second

MCS Modulation and Coding Scheme

ME Mobile Equipment

MMS Multimedia Messaging Service

MO Mobile Originated

MS Mobile Station (GSM engine)

uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

MT Mobile Terminated

PAP Password Authentication Protocol

PDU Protocol Data Unit

PPP Point-to-Point Protocol

RF Radio Frequency

RX Receive Direction

SIM Subscriber Identification Module

SMS Short Message Service

TDD Time Division Duplexing

TD-SCDMA Time Division-Synchronous Code Division Multiple Access

TE Terminal Equipment

TTFF Time to First Fix

TX Transmitting Direction

UART Universal Asynchronous Receiver & Transmitter

UL Up Link

UMTS Universal Mobile Telecommunications System

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uCloudlink M2 Mini PCIe-C _Hardware Design Guide_V1.0

URC Unsolicited Result Code

USSD Unstructured Supplementary Service Data

WCDMA Wideband Code Division Multiple Access

ＦＣＣ　Ｓｔａｔｅｍｅｎｔ

NOTICE:

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation. Changes or
modifications not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment.

Please notice that if the FCC identification number is not visible when the module is installed inside

another device, then the outside of the device into which the module is installed must also display a

label referring to the enclosed module. This exterior label can use wording such as the following:

“Contains FCC ID:2AC88-GLMM18A02” any similar wording that expresses the same meaning may

be used.

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with a minimum distance of 20cm between the
radiator & your body. This transmitter must not be co-located or operating in conjunction with any

other antenna or transmitter.
The module is limited to OEM installation ONLY.

The OEM integrator is responsible for ensuring that the end-user has no manual instruction

to remove or install module.

The module is limited to installation in mobile application.
A separate approval is required for all other operating configurations, including portable configurations

with respect to Part 2.1093 and difference antenna configurations.

There is requirement that the grantee provide guidance to the host manufacturer for compliance with
Part 15B requirements.

The finished product is required to comply with all applicable FCC equipment authorisations, regulati­ons and qequipment. We will provide guidance to the host manufacturer for conpliance with the FCC

part 15B requiremnets.
The OEM integrator is responsible for ensuring that the end-user has no manual instructions to rem-

ove or install module.

The module is limited to installation in mobile or fixed application.

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