FCC ID: ZMOL816AM LTE module

L816-AM Hardware User Manual Version: 2.0.4 Update date: 2016.09.18 Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 1 of 42 Applicability Table No. Product model 1 L816-AM Description N/A Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 2 of 42 Copyright Copyright 2016 Fibocom Wireless Inc. All rights reserved. Without the prior written permission of the copyright holder, any company or individual is prohibited to excerpt, copy any part of or the entire document, or distribute the document in any form. Notice The document is subject to update from time to time owing to the product version upgrade or other reasons. Unless otherwise specified, the document only serves as the user guide. All the statements, information and suggestions contained in the document do not constitute any explicit or implicit guarantee. Trademark The trademark is registered and owned by Fibocom Wireless Inc. Version Record Version Update Date Description V2.0.0 V2.0.1 V2.0.2 V2.0.3 V2.0.4 2016-04-28 Initial version 2016-07-19 2016-07-26 Sections describe modifications Modified description 2016-07-28 Update part chart 2016-09-18 Add product certification of warnings Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 3 of 42 Contents 1 Foreword....................................................................................................................................... 6 1.1 Introduction........................................................................................................................................... 6 1.2 Reference Standard............................................................................................................................ 6 1.3 Related Documents............................................................................................................................. 6 2 Overview........................................................................................................................................7 2.1 Introduction........................................................................................................................................... 7 2.2 Specification..........................................................................................................................................7 2.3 Warnings............................................................................................................................................... 8 2.4 Application Framework..................................................................................................................... 11 2.5 Hardware Framework........................................................................................................................12 3 Application Interface................................................................................................................13 3.1 LGA Interface..................................................................................................................................... 13 3.1.1 Pin Distribution.............................................................................................................................. 13 3.1.2 Pin Definition.................................................................................................................................... 14 3.2 Power Supply..................................................................................................................................... 19 3.2.1 Power Supply................................................................................................................................... 19 3.2.2 Power Consumption........................................................................................................................21 3.3 Control Signal.....................................................................................................................................22 3.3.1 Module Start-up............................................................................................................................... 22 3.3.1.1 Start-up Circuit.............................................................................................................................22 3.3.1.2 Start-up Timing............................................................................................................................ 23 3.3.2 Module Shutdown............................................................................................................................24 3.3.3 Module Reset................................................................................................................................... 25 3.4 USB Interface..................................................................................................................................... 26 3.4.1 USB Interface Definition................................................................................................................. 26 3.4.2 USB Interface Application.............................................................................................................. 26 3.5 USIM Interface................................................................................................................................... 27 3.5.1 USIM Pins......................................................................................................................................... 27 3.5.2 USIM Interface Circuit.....................................................................................................................28 3.5.2.1 N.C. SIM Card Slot..................................................................................................................... 28 3.5.2.2 N.O. SIM Card Slot..................................................................................................................... 28 3.5.3 USIM Hot-Plugging..........................................................................................................................29 3.5.4 USIM Design.................................................................................................................................... 30 Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 4 of 42 3.6 GPIO....................................................................................................................................................30 3.6.1 FW_Ready........................................................................................................................................31 3.6.2 SMS_Ready......................................................................................................................................31 3.6.3 Wakeup_Host...................................................................................................................................31 3.6.4 PA_Blanking..................................................................................................................................... 32 3.7 Interrupt Control................................................................................................................................. 32 3.7.1 W_Disable#...................................................................................................................................... 32 3.7.2 BodySar.............................................................................................................................................33 3.8 Other Interfaces................................................................................................................................. 33 4 RF Interface................................................................................................................................ 34 4.1 Operating Band..................................................................................................................................34 4.2 Transmitting Power............................................................................................................................34 4.3 Receiver Sensitivity........................................................................................................................... 35 4.4 RF PCB Design..................................................................................................................................36 4.4.1 Trace Routing Principle.................................................................................................................. 36 4.4.2 RF Impedance Design.................................................................................................................... 36 4.5 Antenna Design..................................................................................................................................37 4.5.1 Antenna Design Requirements..................................................................................................... 37 5 Structure Specification............................................................................................................38 5.1 Product Appearance..........................................................................................................................38 5.2 Dimension of Structure..................................................................................................................... 39 5.3 Recommended Design for PCB Bonding Pad.............................................................................. 40 5.4 SMT Paster.........................................................................................................................................41 5.5 Storage................................................................................................................................................42 5.5.1 Storage Life...................................................................................................................................... 42 5.5.2 Workshop Life.................................................................................................................................. 42 5.5.3 Recommended baking standards:................................................................................................42 5.6 Packing................................................................................................................................................42 5.6.1 Tray Package....................................................................................................................................42 Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 5 of 42 1 Foreword 1.1 Introduction The document describes the electrical characteristics, RF performance, dimensions and application environment, etc. of L816-AM-00 (hereinafter referred to as L816-AM). With the assistance of the document and other instructions, the developers can quickly understand the hardware functions of L816-AM modules and develop products. 1.2 Reference Standard The design of the product complies with the following standards:

3GPP TS 51.010-1 V10.5.0: Mobile Station (MS) conformance specification; Part 1:

Conformance specification 3GPP TS 34.121-1 V10.8.0: User Equipment (UE) conformance specification; Radio transmission and reception (FDD);Part 1: Conformance specification 3GPP TS 36.521-1 V10.6.0: User Equipment (UE) conformance specification; Radio transmission and reception; Part 1: Conformance testing 3GPP TS 21.111 V10.0.0: USIM and IC card requirements 3GPP TS 51.011 V4.15.0: Specification of the Subscriber Identity Module -Mobile Equipment

(SIM-ME) interface 3GPP TS 31.102 V10.11.0: Characteristics of the Universal Subscriber Identity Module (USIM) application 3GPP TS 31.11 V10.16.0: Universal Subscriber Identity Module (USIM) Application Toolkit(USAT) 3GPP TS 36.124V10.3.0: ElectroMagnetic Compatibility (EMC) requirements for mobile terminals and ancillary equipment 3GPP TS 27.007 V10.0.8: AT command set for User Equipment (UE) 3GPPTS27.005 V10.0.1: Use of Data Terminal Equipment - Data Circuit terminating Equipment

(DTE - DCE) interface for Short Message Service (SMS) and Cell Broadcast Service (CBS) Related Documents 1.3 RF Antenna Application Design Specification FIBOCOM_L8 Family System Driver Integration and Application Guidance L816-AM AT Commands Manual L816-AM SMT Application Design Specification Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 6 of 42 2 Overview 2.1 Introduction The L816-AM module are highly integrated 4G wireless communication LGA modules, which supports LTE FDD/WCDMA/GSM systems (3 modes and 7 bands). 2.2 Specification Specification LTE FDD: Band II,IV, XII Operating Band WCDMA/HSPA+: Band I,II,V(VI),VIII GSM/GPRS/EDGE: 850/900/1800/1900MHz LTE FDD Rel.9, 10Mbps DL/5Mbps UL (Cat 1) Data Transmission WCDMA / HSDPA /

HSUPA:

UMTS:384 kbps DL/384 kbps UL HSDPA CAT 7:7.2 Mbps Down;HSUPA CAT 6:5.76 Mbps Up GPRS/EDGE GPRS:MSC 10, CS-4 80 Kbps Down/20Kbps Up Power Supply DC 3.3V4.5V Temperature Physical characteristics Interfaces Antenna Function Interface Operating: -10C +55C Storage: -40C +85C Package: LGA 115 pins Dimension:30.0 x 21.0 x 1.55mm Weight:~2.4g WWAN Main Antenna x 1 WWAN Diversity Antenna x 1 USIM 3V/1.8V USB 2.0 x 1 EINT, GPIO USIM x 1 RF MIPI,RF GPO Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 7 of 42 Software AT commands 3GPP TS 27.007 and 27.005, and proprietary FIBOCOM AT commands Firmware update USB 2.3 Warnings 2.3.1 CE Statement EU Regulatory Conformance:

Hereby, We, FIBOCOM Wireless Inc. declares that this device L816-AM is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC. CE 0560 R&TTE Regulation:

In all cases assessment of the final product must be mass against the Essential requirements of the R&TTE Directive Articles 3.1(a) and (b), safety and EMC respectively, as well as any relevant Article 3.2 requirements. The maximum antenna gain for frequency 900 is 3dBi; for frequency 1800 is 5dBi and the antenna separation distance is 20cm. 2.3.2 FCC Statement Federal Communication Commission Interference Statement 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. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 8 of 42 installation. be determined by turning the equipment off and on, interference by one of the following measures:

If this equipment does cause harmful interference to radio or television reception, which can the the user is encouraged to try to correct Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. FCC Caution:

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator &

your body. This device is intended only for OEM integrators under the following conditions:

1) The antenna must be installed such that 20 cm is maintained between the antenna and users, and the maximum antenna gain allowed for use with this device is 5dBi. 2) The transmitter module may not be co-located with any other transmitter or antenna. As long as 2 conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 9 of 42 End Product Labeling This transmitter module is authorized only for use in device where the antenna may be installed such that 20 cm may be maintained between the antenna and users. The final end product must be labeled in a visible area with the following: Contains FCC ID: ZMOL816AM and IC:21374-L816AM. The grantee's FCC ID & IC ID can be used only when all FCC&IC compliance requirements are met. Manual Information To the End User The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the users manual of the end product which integrates this module. The end user manual shall include all required regulatory information/warning as show in this manual. 2.3.3 IC Statement Industry Canada statement This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:

1) 2) this device may not cause interference, and this device must accept any interference, operation of the device. including interference that may cause undesired Le prsent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes:

1) 2) l'appareil ne doit pas produire de brouillage, et l'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numrique de la classe B est conforme la norme NMB-003 du Canada. This device complies with RSS-310 of Industry Canada. Operation is subject to the condition that this device does not cause harmful interference. Cet appareil est conforme la norme RSS-310 d'Industrie Canada. L'opration est soumise la condition que cet appareil ne provoque aucune interfrence nuisible. This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter, except tested built-in radios. Cet appareil et son antenne ne doivent pas tre situs ou fonctionner en conjonction avec une autre antenne ou un autre metteur, exception faites des radios intgres qui ont t testes. The County Code Selection feature is disabled for products marketed in the US/ Canada. La fonction de slection de l'indicatif du pays est dsactive pour les produits commercialiss aux tats-Unis et au Canada. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 10 of 42 Radiation Exposure Statement:

This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. Dclaration d'exposition aux radiations:

Cet quipement est conforme aux limites d'exposition aux rayonnements IC tablies pour un environnement non contrl. Cet quipement doit tre install et utilis avec un minimum de 20 cm de distance entre la source de rayonnement et votre corps. 2.4 Application Framework The peripheral applications for L816-AM module are shown in Figure 2-1:

Figure2-1 Application Framework Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 11 of 42 2.5 Hardware Framework The hardware framework in Figure 2-2 shows the main hardware functions of L816-AM module, including base band and RF functions. Baseband contains the followings:

GSM/UMTS/LTE FDD controller/Power supply NAND+LPDDR2 RAM Application interface RF contains the followings:

RF Transceiver RF Power/PA RF Front End RF Filter Figure 2-2 Hardware Framework Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 12 of 42 3 Application Interface 3.1 LGA Interface The L816-AM module applies LGA packaging, with a total of 115 pins. 3.1.1 Pin Distribution Figure 3-1 Pin Map (TOP Perspective View) Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 13 of 42 3.1.2 Pin Definition The L816-AM pin definition is as follows:

Pin Pin Name USB2.0 I/O Reset Value Pin Description Type 0.3---3V 0.3---3V 2.0---5.25V 1.8V/3V 1.8V/3V 1.8V/3V 1.8V/3V USB_DP USB_DN VBUS I/O T I/O T PI USB Data Positive USB Data Negative USB VBUS Supply SIM1_DATA I/O L USIM data, internal 4.7K pull-up SIM1_RST SIM1_CLK VSIM1 SIM1_CD Wakeup_Modem W_Disable#

BodySar FW_Ready SMS_Ready USB_En/Disable PA_Blanking GPIO_Modem Wakeup_Host L L O O PO USIM reset USIM clock USIM power supply I I I I O O O O PD PD PD PD PD PD PD I/O PD O PD USIM card detection with 390K pull-

up, active high 1.8V Reserved Disable WWAN Body SAR detection FW_Ready output SMS_Ready output CMOS 1.8V CMOS 1.8V CMOS 1.8V CMOS 1.8V CMOS 1.8V Enable_Disable-USB Signal Output CMOS 1.8V PA_Blanking output Reserved Wakeup_Host output CMOS 1.8V CMOS 1.8V Main_ANT DIV_ANT I/O I Main antenna Diversity antenna ANT Tunable Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 14 of 42 13 14 15 SIM 17 18 19 20 26 EINT 31 40 27 GPIO 28 29 30 33 42 39 ANT 61 68 Pin Pin Name 9 10 11 RFE_RFFE2_VIO RFE_RFFE2_SCLK RFE_RFFE2_SDATA RF GPO 4 5 7 GPIO_RF1 GPIO_RF2 ASM_2V5 Module Control Reset_N Power_On/Off VBAT_BB VBAT_PA VBAT_PA VBAT_TR 32 41 Power 45 46 47 48 GND 1 2 3 6 8 12 16 21 22 23 24 GND GND GND GND GND GND GND GND GND GND GND I/O PO O I/O O O PO I I PI PI PI PI

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Reset Value Pin Description RFFE2 VIO for tunable ANT Reserved Reserved RF_GPIO_1 RF_GPIO_2 ASM_2V5 Type 1.8V 1.8V 1.8V 2.3V 2.3V 2.5V Module reset input with 100K pull-up 1.8V Module power on/off signal. Advise the customer to increase the 200K pull-down 1.8V

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Power input Power input Power input Power input GND GND GND GND GND GND GND GND GND GND GND Power supply Power supply Power supply Power supply Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 15 of 42 Pin Pin Name I/O Reset Value Pin Description 25 34 35 36 37 38 43 44 49 50 51 52 53 54 55 56 57 58 59 60 62 63 64 65 66 67 69 70 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND

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GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND Type Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 16 of 42 Pin Pin Name I/O Reset Value TG1 TG2 TG3 TG4 TG5 TG6 TG7 TG8 TG9 GND GND GND GND GND GND GND GND GND TG10 GND TG11 GND TG12 GND TG13 GND TG14 GND TG15 GND TG16 GND TG17 GND TG18 GND TG19 GND TG20 GND TG21 GND TG22 GND TG23 GND TG24 GND TG25 GND TG26 GND TG27 GND TG28 GND

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Pin Description Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Type Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 17 of 42 Type Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Ground Pin Description Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Thermal Ground Pin Pin Name I/O Reset Value TG29 GND TG30 GND TG31 GND TG32 GND TG33 GND TG34 GND TG35 GND TG36 GND TG37 GND TG38 GND TG39 GND TG40 GND TG41 GND TG42 GND TG43 GND TG44 GND TG45 GND

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H: High Voltage Level L:

Low Voltage Level PD: Pull-Down PU: Pull-Up T: Tri-State OD: Open Drain PP: Push-Pull PI: Power Input PO: Power Output Note:

The unused pins can be left floating. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 18 of 42 3.2 Power Supply The power interface for L816-AM module is as follows:

Pin Pin Name I/O Pin Description DC Parameters V Minimum Value Typical Value Maximum Value 45 46 47 48 15 20 VBAT_BB VBAT_PA VBAT_PA VBAT_TR VBUS VSIM1 PI PI PI PI PI Power input to BB Power input to RF PA DC-DC Power input to RF PA DC-DC Power input to transceiver USB power supply 3.3 3.3 3.3 3.3 2.0 3.8 3.8 3.8 3.8 3.8 PO SIM1 power supply 1.8V/3V 4.5 4.5 4.5 4.5 5.25 3.2.1 Power Supply The L816-AM module should be powered through the VBAT pins, and the power supply design is shown in Figure 3-2:

Figure 3-2 Power Supply Design Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 19 of 42 The filter capacitor design for power supply is shown in the following table:

Recommended capacitance Description Application 220uF x 2 Voltage-stabilizing capacitors 1uF,100nF Digital signal noise Reduce power fluctuations of the module in operation, requiring capacitors with low ESR LDO or DC/DC power supply requires the capacitor of no less than 440uF The capacitor for battery power supply can be reduced to 100220uF Filter out the interference generated from the clock and digital signals 39pF,33pF 850/900 MHz frequency band Filter out low frequency band RF interference 18pF,8.2pF,6.8pF 1800/1900,2100MHz frequency band Filter out medium/high frequency band RF interference The stable power supply can ensure the normal operation of L816-AM module; and the ripple of the power supply should be less than 165mV in design. When the module operates under GSM mode (Burst transmit), the maximum operating current can reach 2A, so the power source should be not lower than 3.135V, or the module may shut down or reboot. The power supply limits are shown in Figure 3-3:

Figure 3-3 Power Supply Limit Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 20 of 42 3.2.2 Power Consumption In the case of 3.8V power supply, the power consumption for L816-AM module is shown in the following table:

Parameter Condition Average Mode Ioff IIdle Power off Power supply, module power off GPRS MFRMS=5 WCDMA LTE FDD DRX=8 DRX=8 Radio Off AT+CFUN=4, Flight mode GPRS ISleep WCDMA MFRMS=2 MFRMS=5 MFRMS=9 DRX=6 DRX=8 DRX=9 LTE FDD Paging cycle #64 frames (0.64 sec DRx cycle) Radio Off AT+CFUN=4,Flight mode IGPRS-RMS CS4 GPRS 1Rx slot nTX slot IEGPRS-RMS MCS9 EDGE IWCDMA-RMS WCDMA GPRS Data transfer GSM850; PCL=5; 1Rx/2Tx GPRS Data transfer GSM900; PCL=5; 1Rx/2Tx GPRS Data transfer DCS1800; PCL=0; 1Rx/2Tx GPRS Data transfer PCS1900; PCL=0; 1Rx/2Tx EDGE Data transfer GSM850; PCL=8; 1Rx/2Tx EDGE Data transfer GSM900; PCL=8; 1Rx/2Tx EDGE Data transfer DCS1800; PCL=2; 1Rx/2Tx EDGE Data transfer PCS1900; PCL=2; 1Rx/2Tx WCDMA Data transfer Band I @+23dBm WCDMA Data transfer Band II @+23dBm Current(mA) TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 21 of 42 Parameter Mode Condition WCDMA Data transfer Band V(VI) @+23dBm WCDMA Data transfer Band VIII @+23dBm LTE FDD Data transfer Band 2 @+23dBm ILTE-RMS LTE FDD LTE FDD Data transfer Band 4 @+23dBm LTE FDD Data transfer Band 12 @+23dBm Average Current(mA) TBD TBD TBD TBD TBD 3.3 Control Signal The L816-AM module provides two control signals to execute the power on/off and reset operations, the pin definition is as follows:

Pin Pin Name Reset Value Functions Type I/O Power on/off signal with internal 200K pull-down. High: Power on Low or floating: Power off Reset signal with 100K internal pull-up, active low. 1.8V 1.8V 41 Power_On/Off 32 Reset_N I I 3.3.1 Module Start-up 3.3.1.1 Start-up Circuit The VRTC output from the module can be used as the pull up voltage and the module has two start-up modes:

AP (Application Processor) controls the module start-up, and the circuit design is shown in Figure 3-4:

Automatically start-up when powered on, and the circuit design is shown in Figure 3-5:

Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 22 of 42 Figure 3-4 Circuit for Module Start-up Controlled by AP Figure 3-5 Circuit for Automatic Start-up 3.3.1.2 Start-up Timing After powering on, the module will start-up by pulling up the Power_On/Off signal for more than 20ms

(100ms is recommended).The start-up timing is shown in Figure 3-6:

Figure 3-6 Timing Control for Start-up Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 23 of 42 Note:

The Reset_N is required to pull high with a 1s delay after the VBAT, because it takes some time to charge the capacitors for +3.3V power supply. If the VBAT power supply is already stable before starting up the module, the delay time can be ignored. 3.3.2 Module Shutdown The L816-AM module can be shut down by software or hardware control. Control mode Action Condition Software Sending AT+CPWROFF command Normal shutdown. Hardware Pull down Power_On/Off pin Only used when a hardware exception occurs and the software control cannot be used. The module can be shut down by sending AT+CPWROFF command. When the module receives the shutdown command, the module will plug Low the FW_Ready and start the finalization process (the reverse process of initialization), and it will be completed after 3s. In the finalization process, the module will save the network, SIM card and some other parameters from memory, then clear the memory and PMU will be powered off. The control timing is shown in Figure 3-7:

Figure 3-7 Software Shutdown Timing Control After the software shutdown, the Power_On/Off pin will remain high which prevents the module from restarting again. To enable the next restart, the Power_On/Off pin should be pulled low after shutting down. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 24 of 42 3.3.3 Module Reset The L816-AM module can reset to its initial status by pulling down the Reset_N signal for more than 10ms

(100ms is recommended), and the module will restart after the Reset_N signal is released. When the customer executes Reset_N function, the PMU remains its power inside the module. The recommended circuit design is shown in the Figure 3-8:

The reset control timing is shown in Figure 3-9:

Figure 3-8 Recommended Design for Reset Circuit Figure 3-9 Reset Timing Control Note:

Reset_N is a sensitive signal, its recommended to add a filter capacitor close to the module. In case of PCB layout, the Reset_N signal lines should keep away from the RF interference and protected by GND. Also, the Reset_N signal lines shall neither near the PCB edge nor route on the surface planes to avoid module from reset caused by ESD problems. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 25 of 42 3.4 USB Interface The L816-AM module supports USB 2.0 which is compatible with USB High-Speed (480 Mbit/s) and USB Full-Speed (12 Mbit/s). For the USB timing and electrical specification of L816-AM module, please refer to Universal Serial Bus Specification 2.0. 3.4.1 USB Interface Definition Pin Pin Description Reset Value Pin Name Type I/O 15 14 13 VBUS USB_DN USB_DP PI IO IO USB power supply 2.0---5.25V T T USB Data Negative USB Data Positive 0.3---3V 0.3---3V The VBUS power supply is used as the detection of the USB port; after VBUS is powered on, the USB function of the module will be enabled and the enumeration will begin. The VBUS pin is only used for the detection of USB port, and the supply current is about 1mA. When USB_DN & USB_DP are disconnected, the module will not enter sleep mode for the case if VBUS power is supplied. The USB driver will map 3 COM ports and 4 NCM ports, which are described as follows:

2 COM ports are used to send AT Commands. 1 COM port is used to capture LOG information with debugging softwares. 4 NCM ports are virtual network ports, which are used to initiate the data service. Note:

One COM port can be used as the Modem COM port to initiate the data service. Since the speed of the Modem COM port is not sufficient for the 150 Mbps peak downlink speed requirement for LTE, so it is not recommended to be used. 3.4.2 USB Interface Application The reference circuit is shown in Figure 3-10:

Figure 3-10 Reference Circuit for USB Interface Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 26 of 42 Since the module supports USB 2.0 High-Speed, it is required to use TVS diodes with equivalent capacitance of 1pF or smaller ones on the USB_DN/DP differential signal lines, it is recommended to use 0.5pF TVS diodes. There is no special requirement for TVS diodes on VBUS pin, normally the 8 ~ 10pF TVS diodes can be used. USB_DN and USB_DP are high speed differential signal Mbit/s, so the following rules shall be followed carefully in the case of PCB layout:

lines with the maximum transfer rate of 480 USB_DN and USB_DP signal lines should have the differential impedance of 90 ohms. USB_DN and USB_DP signal lines should be parallel and have the equal length, the right angle routing should be avoided. USB_DN and USB_DP signal lines should be routed on the layer that is next to the ground layer, and be wrapped with GND on both sides and layers. 3.5 USIM Interface The L816-AM module has a built-in USIM card interface, which supports 1.8V and 3V SIM cards. 3.5.1 USIM Pins The USIM pins are described as follows:

Pin Pin Name I/O Reset Value Pin Description 20 18 19 17 VSIM1 SIM1_RST SIM1_CLK SIM1_DATA PO O O I/O L L L 26 SIM1_CD I USIM power supply USIM reset USIM clock USIM data with internal 4.7K pull-up USIM card detection with 390K pull up. Active-high, and high level means SIM card is inserted; and low level means SIM card is detached. Type 1.8V/3V 1.8V/3V 1.8V/3V 1.8V/3V 1.8V Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 27 of 42 3.5.2 USIM Interface Circuit 3.5.2.1 N.C. SIM Card Slot The reference circuit design for N.C. (Normally Closed) SIM card slot is shown in Figure 3-11:

Figure 3-11 Reference Circuit for N.C. SIM Card Slot The principles for N.C. SIM card slot design are described as follows:

When the SIM card is detached, it connects the short circuit between CD and SW pins, and drives the SIM1_CD pin low. When the SIM card is inserted, it connects an open circuit between CD and SW pins, and drives the SIM1_CD pin high. Suggested SIM1_CD pin increase TVS to protect the pin. 3.5.2.2 N.O. SIM Card Slot The reference circuit design for N.O. (Normally Open) SIM card slot is shown in Figure 3-12:

Figure 3-12 Reference Circuit for N.O. SIM Card Slot Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 28 of 42 The principles for N.O. SIM card slot design are described as follows:

When the SIM card is detached, it connects an open circuit between CD and SW pins, and drives the SIM1_CD pin low. When the SIM card is inserted, it connects the short circuit between CD and SW pins, and drives the SIM1_CD pin high. Suggested SIM1_CD pin increase TVS to protect the pin. 3.5.3 USIM Hot-Plugging The L816-AM module supports the SIM card hot-plugging detection function, which determines whether the SIM card is inserted or detached by detecting the SIM1_CD pin state of the SIM card slot. The SIM card hot-plugging detection function can be configured by AT+MSMPD command, and the description for AT command is as follows:

AT Command Hot-plugging Detection AT+MSMPD=1 Enable AT+MSMPD=0 Disable Function Description Default value, the SIM card hot-plugging detection function is enabled. The module can detect whether the SIM card is inserted or not through the SIM1_CD pin state. The SIM card hot-plugging detection function is disabled. The module reads the SIM card when starting up, and the SIM1_CD status will not be detected. After the SIM card hot-plugging detection function is enabled, the module detects that the SIM card is inserted when the SIM1_CD pin is high, then executes the initialization program and finish the network registration after reading the SIM card information. When the SIM1_CD pin is low, the module determines that the SIM card is detached and does not read the SIM card. Note:

By default, SIM1_CD is active-high, which can be switched to active-low by the AT command. Please refer to the AT Commands Manual for the AT command. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 29 of 42 3.5.4 USIM Design The SIM card circuit design shall meet the EMC standards and ESD requirements with the improved capability to resist interference, to ensure that the SIM card can work stably. The following guidelines should be noted in case of design:

The SIM card slot placement should near the module as close as possible, and away from the RF antenna, DC/DC power supply, clock signal lines, and other strong interference sources. The SIM card slot with a metal shielding housing can improve the anti-interference ability. The trace length between the SIM card slot and the module should not exceed 100mm, or it could reduce the signal quality. The SIM1_CLK and SIM1_DATA signal lines should be isolated by GND to avoid crosstalk interference. If it is difficult for the layout, the whole SIM signal lines should be wrapped with GND as a group at least. The filter capacitors and ESD devices for SIM card signals should be placed near to the SIM card slot, and the ESD devices with 22~33pF capacitance should be used. 3.6 GPIO The L816-AM module provides four signals to indicate the operating status of the module, the status indicator pins are as follows:

Pin Pin Description Reset Value Pin Name Type I/O 28 29 30 39 33 42 FW_Ready SMS_Ready USB_En/Disable Wakeup_Host PA_Blanking GPIO_Modem O O O O O O PD PD PD PD PD PD Modem SMS Ready Inform HOST 1.8V Modem FW Ready HOST 1.8V Inform Reserved Module wakes up Host (AP). PA Blanking output, external GPS control signal. Reserved CMOS 1.8V CMOS 1.8V CMOS 1.8V CMOS 1.8V CMOS 1.8V CMOS 1.8V Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 30 of 42 3.6.1 FW_Ready Firmware ready is a modem driven GPIO, which on power on reset, it should be low. Once the firmware in the modem is ready after boot, it should assert (high) GPIO. In an unlikely event of a firmware/modem crash, if a crash/exception handler is to be run, FW ready GPIO should be de-asserted. FW_Ready timing is shown in Figure 3-63-73-9 3.6.2 SMS_Ready SMS ready is a modem driven GPIO, which should be low while power up/off and reset sequences. Whenever modem receives an SMS from the network, it should assert (high) GPIO during 100msec, then de-assert (low). SMS ready GPIO should be triggered by non-class 2 SIM card data messages regardless message storage status (even the storage is full and not be able to store new received message). SMS_Ready timing is shown in Figure 3-13:

Figure 3-13 SMS_Ready Timing 3.6.3 Wakeup_Host The Wakeup_Host signal is used to wake the Host (AP) when there is an incoming call, SMS or other data requests. The definition of Wakeup_Host signal is as follows:

Operating Mode Wakeup_Host Signal Ringing /SMS or data requests Pull high 100ms then pull low (pulse signal). Idle/Sleep low level Wakeup_Host timing is shown in Figure 3-14:

Figure 3-14 Wakeup_Host Timing Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 31 of 42 3.6.4 PA_Blanking While the module works in GSM frequency band, the PA_Blanking pin will output the pulse signals that synchronize with the GSM burst TX timing. As the GSM TX may interfere the receiving of the GPS signal, AP can disable GPS or stop receiving GPS data when it detects the PA_Blanking pulse signals, to avoid GPS working abnormally. Operating modes PA_BLANKING signal Default Low level GSM burst TX Output the pulse signals that synchronize with the GSM burst TX. PA_BLANKING timing is shown in Figure 3-15:

Figure 3-15 PA_Blanking Timing 3.7 Interrupt Control The L816-AM module provides four interrupt signals, and the pin definition is as follows:

Pin Pin Name I/O Reset Value Pin Description 31 Wakeup_Modem 40 W_Disable#

27 BodySar I I I PD PD PU Reserved Enable/Disable RF network Body SAR detection Type CMOS 1.8V CMOS 1.8V CMOS 1.8V 3.7.1 W_Disable#

The module provides a hardware pin to enable/disable WWAN RF function, and the function can also be controlled by the AT command. The module enters the Flight mode after the RF function is disabled. The definition of W_Disable# signal is as follows:

W_Disable# signal Function High/Floating WWAN enable, the module exits the Flight mode. Low WWAN disable, the module enters Flight mode. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 32 of 42 3.7.2 BodySar The L816-AM module supports the BodySar detection function. The voltage level is high by default for BodySar, and when the SAR sensor detects the closing human body, the BodySar signal will be pulled down. As the result, the module then lowers down its emission power to its default threshold value, thus reducing the RF radiation on the human body. The threshold of emission power can be set by the AT Commands. The definition for BodySar function is as follows:

BodySar signal Function High/Floating The module keeps the default emission power. Low Lower the maximum emission power to the threshold value of the module. 3.8 Other Interfaces ANT Tunable, and RF_GPO. Pin Pin Name 9 10 11 RFE_RFFE2_VIO RFE_RFFE2_SCLK RFE_RFFE2_SDATA I/O I/O PO O Reset Value Pin Description PD PD PD RF LOGIC SWITCH Reserved Reserved Pin Pin Name 4 5 GPIO_RF1 GPIO_RF2 I/O O O Reset Value Pin Description PD PD RF LOGIC SWITCH RF LOGIC SWITCH Type 1.8V 1.8V 1.8V Type 2.3V 2.3V The RFFE port will be re-purposed to be GPO, with GPO1/GPO2, they can be used control external DPDT, SPxT. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 33 of 42 4 RF Interface 4.1 Operating Band The L816-AM module provides main and diversity antenna interfaces; main antenna is used to transmit and receive RF signals, and the diversity antenna is only used to receive RF signals. The operating bands of the antennas are as follows:

Operating Band Description Rx (MHz) Tx (MHz) Mode Band 1 Band 2 Band 3 Band 4 Band 5 Band 6 Band 8 Band 12 IMT 2100MHz WCDMA 1920 - 1980 2110 - 2170 PCS 1900MHz LTE FDD/WCDMA/GSM 1850 - 1910 1930 - 1990 DCS 1800MHz GSM 1710 - 1785 1805 - 1880 AWS 1700MHz LTE FDD 1710 - 1755 2110 - 2155 CLR 850MHz WCDMA/GSM 850MHz WCDMA E-GSM 900MHz WCDMA/GSM 824 - 849 830 - 840 880 - 915 869 - 894 875 -885 925 - 960 Lower SMH/LSMH blocks A/B/C LTE FDD 699 - 716 729 - 746 4.2 Transmitting Power The transmitting power for each band of the L816-AM module is as follows:

Mode Tx Power(dBm) Band Note GPRS

(1 slot Tx) WCDMA GSM850 GSM900 DCS1800 PCS1900 Band I Band II Band V Band VI 32.51dBm 32.51dBm 29.51dBm 29.51dBm 231dBm 231dBm 231dBm 231dBm Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 34 of 42 Mode LTE FDD Band Band VIII Band 2 Band 4 Band 12 Tx Power(dBm) Note 231dBm 231dBm 231dBm 231dBm 10MHz Bandwidth, 1 RB 10MHz Bandwidth, 1 RB 10MHz Bandwidth, 1 RB 4.3 Receiver Sensitivity The receiver sensitivity for each band of the L816-AM module is as follows:

Mode Rx Sensitivity(dbm)-typical Band GPRS WCDMA LTE FDD GSM850 GSM900 DCS1800 PCS1900 Band I Band II Band V Band VI Band VIII Band 2 Band 4 Band 12 TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD TBD Note BLER<10%

BLER<10%

BLER<10%

BLER<10%

BER<0.1%

BER<0.1%

BER<0.1%

BER<0.1%

BER<0.1%

10MHz Bandwidth 10MHz Bandwidth 10MHz Bandwidth Note:

The above LTE values are measured for the Dual-Antenna situation (Main + Diversity). For single main antenna (without Diversity), the sensitivity will drop around 3dBm for each band of LTE. The WCDMA and GSM have not diversity function. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 35 of 42 4.4 RF PCB Design 4.4.1 Trace Routing Principle The L816-AM module supports dual antennas, which meets the requirements for LTE of 3GPP. The MAIN_ANT is used to transmit and receive RF signals, while the DIV_ANT is used to receive RF signals. Using diversity antenna to improve the receiving sensitivity of RF antenna and double the download rate. Since L816-AM is an LTE module, dual antennas should be applied to meet the performance requirements. The L816-AM module does not provide RF connector itself, so routing RF traces are required for the connection with RF connectors or antenna feed points on the application mainboard. It is recommended to use the microstrip line for RF trace, with the insertion loss controlled within 0.2dB and impedance controlled at 50. It is recommended to reserve a circuit (the parallel inductors should connect to the RF trace) between the L816-AM module and the antenna connectors (or the feed points). The parallel devices are directly across the RF lines and no branch is allowed. Figure 4-1 L816-AM Antenna Circuit 4.4.2 RF Impedance Design The RF traces impedance of the antenna interface shall be controlled at 50. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 36 of 42 4.5 Antenna Design 4.5.1 Antenna Design Requirements The L816-AM module provides Main and Diversity antenna interfaces, and the antenna design requirements are as follows Main antenna requirements for L816-AM module Frequency range The most proper antenna to adapt the frequencies should be used. Bandwidth

(GPRS/EDGE Bandwidth (WCDMA) Bandwidth (LTE) GSM850 : 70 MHz GSM900 : 80 MHz GSM1800(DCS) : 170 MHz GSM1900(PCS) : 140 MHz WCDMA band I(2100) : 250 MHz WCDMA band II(1900) : 140 MHz WCDMA band V(850) : 70 MHz WCDMA band VI(850): 55MHz WCDMA band VIII(900) : 80 MHz LTE band 2(1900):

LTE Band 4(1700):

LTE band 12(700):

140 MHz 445 MHz 50 MHz Impedance 50 Ohm Input power Recommended standing-wave ratio

(SWR)

> 35dBm(2W) peak power GSM

> 25dBm average power WCDMA & LTE 2:1 Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 37 of 42 5 Structure Specification 5.1 Product Appearance The product appearance for L816-AM module is shown in Figure 5-1:

Figure 5-1 Module Appearance Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 38 of 42 5.2 Dimension of Structure The structural dimension of the L816-AM module is shown in Figure 5-2:

Figure 5-2 Dimension of Structure Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 39 of 42 5.3 Recommended Design for PCB Bonding Pad Recommended Design for PCB Bonding Pad of the L816-AM module is shown in Figure 5-3 Figure5-3 Recommended Design for PCB Bonding Pad (Unit: mm) Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 40 of 42 5.4 SMT Paster SMT Paster of the L816-AM module is shown in Figure Figure5-4 Please refer to L816-AM SMT Application Design Specification Stencil thickness0.12mm Figure5-4 Recommended Design for stencil (Unit: mm) Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 41 of 42 5.5 Storage 5.5.1 Storage Life Storage Conditions (recommended): Temperature is 23 5 , relative humidity is RH 35-70%. Storage period (sealed vacuum packing): Under the recommended storage conditions, the storage life is 12 months. 5.5.2 Workshop Life For the module integrated some components for Class 3 humidity-sensitive ,the workshop life need 24hours. After unpacking and under the environment with the room temperature of 235 and the relative humidity of less than 60%, the reflow production or other high-temperature operations shall be conducted within 24 hours for products, or products shall be stored in the environment with the relative humidity of less than 10%, in order to keep products dry. 5.5.3 Recommended baking standards:

Continuous baking time: 24 hours. Temperature: 1255. Oven: Heat convection oven. Component tray can NOT be baked on high temperature, Need use high temperature tray baking 5.6 Packing The L816-AM module uses the tray sealed vacuum packing, combined with the outer packing method using the hard cartoon box, so that the storage, transportation and the usage of modules can be protected to the greatest extent. Note:

The vacuum package bag includes the humidity card and a desiccant. The module is the humidity sensitive device, and the humidity sensitivity level is Class 3, which meets the requirements of the American Electronic Component Industry Association (JEDEC). Please read the relevant application guidance and precautions referred to herein, to avoid the permanent damage to the product caused by humidity. 5.6.1 Tray Package Please read the L816-AM packing instructions of Fibocom company FIBOCOM-SAL-WI-63 L816-AM Packing Instruction A0. Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved. L816-AM Hardware User Manual Page 42 of 42