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.
Applicability Table No. Product model Description 1 L816-AM N/A Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved.
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.
Contents 1 Foreword....................................................................................................................................... 6 1.1 Introduction........................................................................................................................................... 6 1.2 Reference Standard............................................................................................................................ 6 1.3 Related Documents..........................
3.6 GPIO.................................................................................................................................................... 30 3.6.1 FW_Ready........................................................................................................................................ 31 3.6.2 SMS_Ready......................................................................................................................................31 3.6.3 Wakeup_Host.............................
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.
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 Operating Band II,IV, XII 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 WCDMA / HSDPA / UMTS:384 kbps DL/384 kbps UL Transmission HSUPA: HSDPA CAT 7:7.2 Mbps Down;HSUPA CAT 6:5.
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.
installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
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.
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. Déclaration d'exposition aux radiations: Cet équipement est conforme aux limites d'exposition aux rayonnements IC établies pour un environnement non contrôlé.
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.
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.
3.1.2 Pin Definition The L816-AM pin definition is as follows: Pin Pin Name I/O 13 USB_DP I/O 14 USB_DN I/O 15 VBUS PI 17 SIM1_DATA I/O 18 SIM1_RST 19 Reset Pin Description Type T USB Data Positive 0.3---3V T USB Data Negative 0.3---3V USB VBUS Supply 2.0---5.25V L USIM data, internal 4.7KΩ pull-up 1.8V/3V O L USIM reset 1.8V/3V SIM1_CLK O L USIM clock 1.8V/3V 20 VSIM1 PO USIM power supply 1.8V/3V 26 SIM1_CD I 31 Wakeup_Modem I PD Reserved CMOS 1.
Pin Pin Name I/O 9 RFE_RFFE2_VIO 10 11 Reset Pin Description Type PO RFFE2 VIO for tunable ANT 1.8V RFE_RFFE2_SCLK O Reserved 1.8V RFE_RFFE2_SDATA I/O Reserved 1.8V 4 GPIO_RF1 O RF_GPIO_1 2.3V 5 GPIO_RF2 O RF_GPIO_2 2.3V 7 ASM_2V5 PO ASM_2V5 2.5V I Module reset input with 100KΩ pull-up 1.8V Value RF GPO Module Control 32 Reset_N Module power on/off signal. 41 Power_On/Off I Advise the customer to increase the 200KΩ pull-down 1.
Pin Pin Name I/O 25 GND - 34 GND 35 Reset Pin Description Type - GND Ground - - GND Ground GND - - GND Ground 36 GND - - GND Ground 37 GND - - GND Ground 38 GND - - GND Ground 43 GND - - GND Ground 44 GND - - GND Ground 49 GND - - GND Ground 50 GND - - GND Ground 51 GND - - GND Ground 52 GND - - GND Ground 53 GND - - GND Ground 54 GND - - GND Ground 55 GND - - GND Ground 56 GND - - GND Ground 57 GND - -
Pin Pin Name I/O TG1 GND - TG2 GND TG3 Reset Pin Description Type - Thermal Ground Ground - - Thermal Ground Ground GND - - Thermal Ground Ground TG4 GND - - Thermal Ground Ground TG5 GND - - Thermal Ground Ground TG6 GND - - Thermal Ground Ground TG7 GND - - Thermal Ground Ground TG8 GND - - Thermal Ground Ground TG9 GND - - Thermal Ground Ground TG10 GND - - Thermal Ground Ground TG11 GND - - Thermal Ground Ground TG12 GND - - The
Pin Pin Name I/O TG29 GND - TG30 GND TG31 Reset Pin Description Type - Thermal Ground Ground - - Thermal Ground Ground GND - - Thermal Ground Ground TG32 GND - - Thermal Ground Ground TG33 GND - - Thermal Ground Ground TG34 GND - - Thermal Ground Ground TG35 GND - - Thermal Ground Ground TG36 GND - - Thermal Ground Ground TG37 GND - - Thermal Ground Ground TG38 GND - - Thermal Ground Ground TG39 GND - - Thermal Ground Ground TG40 GND
3.2 Power Supply The power interface for L816-AM module is as follows: DC Parameters （V） Pin Pin Name I/O Pin Description 45 VBAT_BB PI 46 VBAT_PA PI 47 VBAT_PA PI 48 VBAT_TR PI 15 VBUS PI USB power supply 20 VSIM1 PO SIM1 power supply 3.2.1 Power input to BB Power input to RF PA DC-DC Power input to RF PA DC-DC Power input to transceiver Minimum Typical Maximum Value Value Value 3.3 3.8 4.5 3.3 3.8 4.5 3.3 3.8 4.5 3.3 3.8 4.5 2.0 3.8 5.25 1.
The filter capacitor design for power supply is shown in the following table: Recommended capacitance Application Description Reduce power fluctuations of the module in operation, requiring capacitors with low ESR 220uF x 2 Voltage-stabilizing capacitors LDO or DC/DC power supply requires the capacitor of no less than 440uF The capacitor for battery power supply can be reduced to 100～220uF Filter out the interference generated from the 1uF,100nF Digital signal noise 39pF,33pF 850/900 MHz fr
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 Mode Condition Average Current(mA) Ioff IIdle Power off Power supply, module power off TBD GPRS MFRMS=5 TBD WCDMA DRX=8 TBD LTE FDD DRX=8 TBD Radio Off AT+CFUN=4, Flight mode TBD MFRMS=2 TBD MFRMS=5 TBD MFRMS=9 TBD DRX=6 TBD DRX=8 TBD DRX=9 TBD LTE FDD Paging cycle #64 frames (0.
Parameter Mode Condition Average Current(mA) ILTE-RMS LTE FDD WCDMA Data transfer Band V(VI) @+23dBm TBD WCDMA Data transfer Band VIII @+23dBm TBD LTE FDD Data transfer Band 2 @+23dBm TBD LTE FDD Data transfer Band 4 @+23dBm TBD LTE FDD Data transfer Band 12 @+23dBm TBD 3.
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.
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 Software Hardware Action Condition Sending AT+CPWROFF command Pull down Power_On/Off pin Normal shutdown.
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.
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 Name I/O 15 VBUS PI 14 USB_DN IO 13 USB_DP IO Reset Value Pin Description Type USB power supply 2.0---5.25V T USB Data Negative 0.3---3V T USB Data Positive 0.
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.
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.
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.
3.5.4 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.
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 3-6，3-7，3-9。 3.6.2 SMS_Ready SMS ready is a modem driven GPIO, which should be low while power up/off and reset sequences.
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.
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.
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.
Mode Band LTE FDD 4.3 Tx Power(dBm) Note Band VIII 23±1dBm Band 2 23±1dBm 10MHz Bandwidth, 1 RB Band 4 23±1dBm 10MHz Bandwidth, 1 RB Band 12 23±1dBm 10MHz Bandwidth, 1 RB Receiver Sensitivity The receiver sensitivity for each band of the L816-AM module is as follows: Mode Band GPRS WCDMA LTE FDD Rx Sensitivity(dbm)-typical Note GSM850 TBD BLER<10% GSM900 TBD BLER<10% DCS1800 TBD BLER<10% PCS1900 TBD BLER<10% Band I TBD BER<0.1% Band II TBD BER<0.
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.
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.
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.
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.
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.
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 thickness≥0.12mm Figure5-4 Recommended Design for stencil (Unit: mm) Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved.
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.
