Huawei MG323 Hardware Manual
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Huawei MG323 Hardware Manual

Huawei MG323 Hardware Manual

Gsm m2m module
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HUAWEI MG323 GSM M2M Module
Hardware Guide
Issue
04
Date
2011-08-22

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Summary of Contents for Huawei MG323

  • Page 1 HUAWEI MG323 GSM M2M Module Hardware Guide Issue Date 2011-08-22...
  • Page 2 E-mail: mobile@huawei.com Please refer color and shape to product. Huawei reserves the right to make changes or improvements to any of the products without prior notice. Copyright © Huawei Technologies Co., Ltd. 2011. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.
  • Page 3 HUAWEI MG323 GSM M2M Module Hardware Guide About This Document About This Document History Version Date Chapter Descriptions Creation Deleted “1.2 Related Documents” 2010-10-25 Deleted “Charging Interface (TBD)” Revised “Table 3-5 UART1 interface signals” 3.6.1 Deleted “Charging Interface (TBD)” Added “Audio Interface”...

  • Page 4: Table Of Contents

    HUAWEI MG323 GSM M2M Module Hardware Guide Contents Contents 1 Introduction............................ 6 1.1 Overview ............................6 2 Overall Description ........................7 2.1 About This Chapter ........................... 7 2.2 Function Overview ........................... 7 2.3 Application Block Diagram ....................... 9 2.4 Circuit Block Diagram ........................9 3 Description of the Application Interfaces ................
  • Page 5 6.1 Overview ............................42 6.2 Dimensions ............................. 42 6.3 Dimensions of the B2B Connector ....................44 6.4 MG323 Module Installation Description ..................45 6.5 Specification Selection for Fasteners ..................... 47 7 Appendix A Circuits of Typical Interfaces ................49 8 Appendix B Acronyms and Abbreviations ................50...

  • Page 6: Introduction

    1.1 Overview This document describes the hardware application interfaces and air interfaces that are provided when the Huawei MG323 GSM M2M module (hereinafter referred to as the MG323 module) is used. This document helps you to understand the interface specifications, electrical features, and related product information of the MG323 module.

  • Page 7: Overall Description

    HUAWEI MG323 GSM M2M Module Hardware Guide Overall Description Overall Description 2.1 About This Chapter This chapter gives a general description of the MG323 module and provides:  Function Overview  Application Block Diagram  Circuit Block Diagram 2.2 Function Overview...
  • Page 8 < 2.0 mA GPRS Class 10 (maximum): 460 mA Protocols GSM/GPRS Phase2/2+ AT commands See the HUAWEI MG323 GSM M2M Module AT Command Interface Specification. Application UART1 (supporting 8-wire UART) interface (50- One standard Subscriber Identity Module (SIM) card interface (3 pin B2B V or 1.8 V)

  • Page 9: Application Block Diagram

    On / Off Reset UART Handset or card earphone 2.4 Circuit Block Diagram The circuit block diagram and major functional units of the MG323 module contain the following parts:  GSM baseband controller  Power management  Multi-chip package (MCP) memory...
  • Page 10 Overall Description  Radio frequency (RF) transceiver  26 MHz reference clock  RF front-end modules  Receive filter Figure 2-2 Circuit block diagram of the MG323 module Huawei Proprietary and Confidential Issue 04 (2011-08-22) Copyright © Huawei Technologies Co., Ltd.

  • Page 11: Description Of The Application Interfaces

     Audio Interface 3.2 B2B Connector Interface The MG323 module uses a 50-pin B2B connector as its external interface. For details about the model and dimensions of the B2B connector, see “6.3 Dimensions of the B2B Connector." Figure 3-1 shows the sequence and definitions of pins on the 50-pin B2B signal interface of the MG323 module.
  • Page 12 HUAWEI MG323 GSM M2M Module Hardware Guide Description of the Application Interfaces PIN NO. Signal name PIN NO. Signal name SIM_CLK INTEAR_N VSIM INTEAR_P SIM_DATA EXTEAR_P SIM_RST EXTEAR_N INTMIC_N INTMIC_P EXTMIC_P EXTMIC_N TERM_ON RESET BATT_THERM UART1_DCD LED_STATUS UART1_CTS UART1_RD UART1_DTR...

  • Page 13: Power Interface

    2.0 A due to the differences in actual network environments. In this case, the VBAT voltage drops. Make sure that the voltage does not decrease below 3.3 V in any case. Otherwise, exceptions such as restart of the MG323 module may occur.

  • Page 14: Vcoin Interface

    VBAT interface is ready for power supply, it on priority supplies the RTC with power. If the VBAT interface is not ready, the VCOIN interface provides standby power input for the RTC. In this case, the MG323 module needs 5 µA to maintain the RTC function.

  • Page 15: Power-On And Power-Off Time Sequence

    3.4 Power-On and Power-Off Time Sequence 3.4.1 Overview The power-on, power-off, and reset control parts of the B2B interface of the MG323 module includes power-on/power-off interface signal (TERM_ON) and the hardware reset interface signal (RESET). Table 3-2 lists the definitions of the interface pins.

  • Page 16: Power-Off Time Sequence

    Hardware Guide Description of the Application Interfaces Figure 3-3 Power-on time sequence Fetch Ext Code in the figure is a file system in the MG323 module. 3.4.3 Power-Off Time Sequence The MG323 module supports power-off through the TERM_ON interface or the AT^SMSO command.

  • Page 17: Signal Control Interface

    ^SYSSTART. In this case, the external VIO interface is enabled and supplies 2.8 V power. 3.5 Signal Control Interface 3.5.1 Overview The signal control part of the B2B interface in the MG323 module consists of:  Power-on/off (TERM_ON) pin ...

  • Page 18: Output Signal Control Pin

    Figure 3-5 Connections of the TERM_ON and RESET pins 3.5.3 Output Signal Control Pin The MG323 module provides a network status LED pin LED_STATUS. The pulse signal output through this pin controls the status LED on the user interface board to display the network status.

  • Page 19: Uart Interface

    Figure 3-6 Driving circuit 3.6 UART Interface 3.6.1 Overview The MG323 module provides the RS-232 UART1 (8-wire UART) interface for one asynchronous communication channel. As the UART1 interface supports signal control through standard modem handshake, AT commands are entered and serial communication is performed through the UART1 interface.

  • Page 20: Circuit Recommended For The Uart Interface

    A data link is set DCE to DTE Detect 3.6.2 Circuit Recommended for the UART Interface Figure 3-7 shows the connection of the UART1 interface in the MG323 module (DCE) with the host (DTE). Huawei Proprietary and Confidential Issue 04 (2011-08-22)
  • Page 21 Figure 3-8 The signal through the RING after the MG323 receives an SM When an MG323 Module receives a voice call, a periodical low level signal for 1s and a high level signal for 4s are output by RING, as shown in Figure 3-9 .

  • Page 22: Sim Card Interface

    Ground signal of the SIM card 3.7.2 Circuit Recommended for the SIM Card Interface As the MG323 module is not equipped with a SIM card socket, you need to place a SIM card socket on the user interface board. The SIM card signals are transmitted outwards through the 50-pin B2B connector interface.

  • Page 23: Esd Protection For The Sim Card Interface

    (TVS) diode is placed as near as possible to the SIM card socket, and the GND pin of the ESD protection component is well connected to the power GND pin that supplies power to the MG323 module. Huawei Proprietary and Confidential Issue 04 (2011-08-22) Copyright ©...

  • Page 24: Audio Interface

    3.8 Audio Interface 3.8.1 Overview The MG323 module provides two types of audio interfaces: one is for handsets, the other is for headsets. The audio interfaces of the MG323 module support input from handset microphones and headset microphones, and provide output that supports 32 Ω...

  • Page 25: Microphone Interface

    HUAWEI MG323 GSM M2M Module Hardware Guide Description of the Application Interfaces Figure 3-12 External circuit for 32 Ω handsets/16 Ω headsets Table 3-7 Required speaker power for 32 Ω handsets/16 Ω headsets Speaker Load Total Harmonic Distortion Power (Typical) 32 Ω...
  • Page 26 HUAWEI MG323 GSM M2M Module Hardware Guide Description of the Application Interfaces Figure 3-13 External circuit for the microphone interface Total Harmonic Internal Settings of the Supported Input from Distortion Module Microphones THD < 1% F = 1kHz, pre-amp gain = 15.4 mV (typical)

  • Page 27: Antenna Interface

    An RF connector or an antenna pad can be used as the connection method of an antenna interface. When the MG323 module works properly, only one of the preceding connection methods is used. In addition, the antenna interface must be used with coaxial cables with 50 ohm characteristic impedance.

  • Page 28: Coaxial Cable And Rf Connector

    HUAWEI MG323 GSM M2M Module Hardware Guide Antenna Interface The properties of major materials of the MG323 module are as follows:  PCB: FR4  Antenna pad: cheminal nickel-gold pad 4.3 Coaxial Cable and RF Connector The U.FL-R-SMT-1(80) RF connector manufactured by Hirose is used as the antenna interface in the MG323 module.
  • Page 29 HUAWEI MG323 GSM M2M Module Hardware Guide Antenna Interface You can visit http://www.hirose.com for more information about the specifications of the U.FL-R-SMT-1(80) RF connector. It is recommended that you use the Hirose coaxial cable with the RF connector. Figure 4-2 shows the specifications of the coaxial cable working with the RF connector.

  • Page 30: Esd Protection For The Antenna Interface

    4.4 ESD Protection for the Antenna Interface In practical application, pay attention to the ESD protection for the antenna interface of the MG323 module. Incorrect operation may result in permanent damage to the RF components. Figure 4-4 shows the ESD protection circuit recommended for the antenna interface.
  • Page 31 HUAWEI MG323 GSM M2M Module Hardware Guide Antenna Interface Specification Minimum Typical Maximum Unit Value Value Value (Mobile station to base transceiver EGSM-900 station) GSM-1800 1710 1785 GSM-1900 1850 1910 Downlink frequency range GSM-850 (Base transceiver station to mobile EGSM-900...

  • Page 32: Specifications Of The Antenna Interface

    HUAWEI MG323 GSM M2M Module Hardware Guide Antenna Interface 4.6 Specifications of the Antenna Interface Table 4-3 lists the recommended specifications of the antenna interface. Table 4-3 Recommended specifications of the antenna interface Working bands 824 MHz–960 MHz and 1710 MHz–1990 MHz...

  • Page 33: Electrical And Reliability Features

     ESD Features 5.2 Extreme Working Conditions Table 5-1 lists the extreme working conditions for the MG323 module. Using the MG323 module beyond these conditions may result in permanent damage to the module. Table 5-1 Extreme working conditions for the MG323 module...

  • Page 34: Working And Storage Temperatures And Humidity

    ° C storage Moisture [1]: When the MG323 module works at this temperature, all its RF indexes comply with the 3GPP TS 45.005 specifications. [2]: When the MG323 module works at this temperature, certain RF indexes do not comply with the 3GPP TS 45.005 specifications.
  • Page 35 VBAT VBAT VBAT Table 5-4 lists electrical features (typical values) measured when no external device is connected to the MG323 module through the 50-pin B2B interface. Table 5-4 Electrical features of application interfaces Function Signal Name I/O Waveform and Remarks...
  • Page 36 If the MG323 module is in Sleep mode, the VIO pin is in the enabled low consumption state (< 500 uA). If the MG323 module is in Power Down mode, the VIO pin is in the disabled state. This pin can be left floating if it is not used.
  • Page 37 HUAWEI MG323 GSM M2M Module Hardware Guide Electrical and Reliability Features Function Signal Name I/O Waveform and Remarks Level VSIM = 3.00 V Power voltage of the SIM card oHmax = 2.90 V otype = 2.75 V oHmin GND of the SIM card...

  • Page 38: Power Supply Features

    AI indicates pins for analog signal input; AO indicates pins for analog signal output. 5.5 Power Supply Features 5.5.1 Input Power Supply Table 5-5 lists the requirements for input power of the MG323 module. Table 5-5 Requirements for input power of the MG323 module Parameter...

  • Page 39: Reliability Features

    Electrical and Reliability Features 5.6 Reliability Features Table 5-7 lists the test conditions and results of the mechanical reliability of the MG323 module. Table 5-7 Test conditions and results of the mechanical reliability of the MG323 module Item Test Condition Standard Temperature: –40 º...
  • Page 40 Six surfaces should be tested. Second case: 0.8 m in height. Drop the MG323 module on the marble terrace with one surface facing downwards twice. Six surfaces should be tested. Huawei Proprietary and Confidential Issue 04 (2011-08-22) Copyright ©...

  • Page 41: Esd Features

    Electrical and Reliability Features 5.7 ESD Features Pay great attention to ESD protection when using the MG323 module. To ensure that the working reference GND is connected to the MG323 module and user interface board properly, you are recommended not to spray a coated insulation on the...

  • Page 42: Structure

    HUAWEI MG323 GSM M2M Module Hardware Guide Structure Structure 6.1 Overview This chapter describes the dimensions of the MG323 module, including:  Dimensions  Dimensions of the B2B Connector  MG323 Module Installation Description  Specification Selection for Fasteners 6.2 Dimensions Dimensions (L x W x H): 35 mm ...
  • Page 43 HUAWEI MG323 GSM M2M Module Hardware Guide Structure Figure 6-1 Dimensions of the MG323 module (unit: mm) Huawei Proprietary and Confidential Issue 04 (2011-08-22) Copyright © Huawei Technologies Co., Ltd.

  • Page 44: Dimensions Of The B2B Connector

    Hirose). For specific models, access http://www.hirose.com. Figure 6-2 DF12C (manufactured by Hirose) used on the MG323 module Figure 6-3 DF12E (manufactured by Hirose) recommended to be used with the MG323 module on the user interface board Table 6-1 Ordered connector model and DF12 product series working with the MG323...

  • Page 45: Mg323 Module Installation Description

    You can insert machine screws through the structure fixing holes and metal fasteners and fasten with nuts to firmly connect the MG323 module to the user interface board [1]. The metal fastener is placed between the MG323 module and user interface...
  • Page 46 Figure 6-6 shows the MG323 module installation. Figure 6-6 MG323 module installation [1]: Pay great attention to ESD protection when using the MG323 module. To ensure that the working reference GND is connected to the MG323 module and user interface board properly,...

  • Page 47: Specification Selection For Fasteners

    Structure 6.5 Specification Selection for Fasteners To ensure that the MG323 module is firmly fixed on the interface board when using the MG323 module, you are recommended to you use the M1.6 or M1.8 machine screw. You can also customize the screws. The fastener components in the following figures are recommended.
  • Page 48 HUAWEI MG323 GSM M2M Module Hardware Guide Structure Figure 6-8 Nut dimensions Figure 6-9 Metal fastener dimensions Huawei Proprietary and Confidential Issue 04 (2011-08-22) Copyright © Huawei Technologies Co., Ltd.

  • Page 49: Appendix A Circuits Of Typical Interfaces

    HUAWEI MG323 GSM M2M Module Hardware Guide Appendix A Circuits of Typical Interfaces Appendix A Circuits of Typical Interfaces Figure 7-1 Circuits of typical interfaces in the MG323 module Huawei Proprietary and Confidential Issue 04 (2011-08-22) Copyright © Huawei Technologies Co., Ltd.

  • Page 50: Appendix B Acronyms And Abbreviations

    HUAWEI MG323 GSM M2M Module Hardware Guide Appendix B Acronyms and Abbreviations Appendix B Acronyms and Abbreviations Acronym or Abbreviation Expansion Board-to-Board European Conformity Coding Scheme Circuit Switched Data Direct Current Data Circuit-terminating Equipment Direct Memory Access Data Terminal Equipment...
  • Page 51 HUAWEI MG323 GSM M2M Module Hardware Guide Appendix B Acronyms and Abbreviations Acronym or Abbreviation Expansion Negative Temperature Coefficient PBCCH Packet Broadcast Control Channel Printed Circuit Board Protocol Data Unit Radio Frequency RoHS Restriction of the Use of Certain Hazardous...

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