Huawei manual 2Circuit block diagram of the MG323 module

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HUAWEI MG323 GSM M2M Module
Hardware Guide	Overall Description

Power management

Multi-chip package (MCP) memory

Radio frequency (RF) transceiver

26 MHz clock

32 kHz clock

RF front-end modules

Receive filter

Figure 2-2Circuit block diagram of the MG323 module

	Issue 06 (2013-06-13)	Huawei Proprietary and Confidential	12
		Copyright © Huawei Technologies Co., Ltd.

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Contents Issue Date Hardware GuideNo Warranty About This Document HistoryVersion Date Chapter Descriptions CreationVersion Date Chapter Descriptions Updated .8 Audio Interface Updated -3 RecommendedSpecifications of the antenna interface Contents Electrical and Reliability Features Introduction OverviewFeature Description Overall DescriptionAbout This Chapter Function OverviewDRX=2 DRX=5 DRX=9SMS Gprs Gprs ClassApplication Block Diagram Circuit Block Diagram2Circuit block diagram of the MG323 module B2B Connector Interface Description of the Application InterfacesPin Pin Name Description DC Characteristics Normal Min Tpy MaxReset TermonUART1DCD LedstatusPower Interface OverviewVIO VbatPin No Signal Name Description Vbat InterfaceGND Vcoin DCEPower-On and Power-Off Time Sequence Vcoin InterfaceVIO Interface Power-On Time Sequence Pin for controlling power-on and power-offPin for resetting the hardware Signal Control Interface Power-Off Time SequenceReset Input Signal Control Pins Pin for network status LEDOutput Signal Control Pin Application DeviceWorking or Network Status Pin No Signal Name Description Feature Direction Uart InterfaceCircuit Recommended for the Uart Interface DCE receive DTE transmits DTE to DCE Data Serial dataDCE data DTE is ready DTE to DCE Terminal ready DCE data set DCE is ready DCE to DTE ReadyClock signal of the SIM card Power supply of the SIM cardData signal of the SIM card Reset signal of the SIM cardGround signal of the SIM card Circuit Recommended for the SIM Card Interface12External circuit for 32 Ω handsets/16 Ω headsets Audio Interface13External circuit for the microphone interface Antenna Installation Antenna InterfaceCoaxial Cable and RF Connector Environmental Type Material ConditionHuawei MG323 GSM M2M Module Hardware Guide Antenna Interface RF Specifications of the Antenna Interface Specification Minimum Typical Maximum Unit ValueESD Protection for the Antenna Interface Uplink frequency range GSM 824 849 MHzSpecification Minimum Typical Maximum Unit Value Specifications of the Antenna Interface Polarization Linear polarization Pattern OmnidirectionalElectrical and Reliability Features Symbol Specification Minimum Value Maximum Value UnitExternal power voltage Extreme Working ConditionsOperating and Storage Temperatures and Humidity Specification Minimum Value Maximum Value UnitPin No Signal Name Electrical Criteria of Application InterfacesFunction Signal Name Waveform Remarks Level Power supplyVoltage great drop. The Vbat power voltage Than 3.3Pins 41, 43, 45, 47, and 49 are power GND External Power pinVBAT=0 LedstatuUART1 UART1RD UART1RINUART1DSR UART1RTS UART1DTR UART1CTS UART1DCD Power Supply Features Input Power SupplyWorking Current Parameter Minimum Value Typical Value Maximum Value UnitWorking Mode Typical value Unit Remark ConfigurationBand Typical Unit Reliability Features Configuration ValueUp/1 Down 123 Test Condition StandardTest Condition Standard ESD Features ESD Test Standard Contact Discharge Air DischargeEN61000-4-2 ±4 kV ±8 kV Mechanical Specifications DimensionsDimensions L x W x H 35 mm x 32.5 mm x 3.05 mm Dimensions of the B2B Connector 1Dimensions of the MG323 module unit mmModel Stacking HRS Number Height mm MG323 Module Installation Description 5Structure fixing hole6MG323 module installation Specification Selection for Fasteners 7Machine screw dimensions8Nut dimensions Appendix a Circuits of Typical Interfaces 1Circuits of typical interfaces in the MG323 moduleAppendix B Acronyms and Abbreviations Acronym or Abbreviation ExpansionPbcch PCBPDU RTC

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