Huawei MG323 manual Appendix a Circuits of Typical Interfaces

Page 52

HUAWEI MG323 GSM M2M Module
Hardware Guide	Appendix A Circuits of Typical Interfaces

7 Appendix A Circuits of Typical Interfaces

Figure 7-1Circuits of typical interfaces in the MG323 module

VGPIO

UART1_DTR_MCU

UART1_TD_MCU

UART1_RD_MCU

UART1_RTS_MCU


	100nf	1uf

VGPIO	VCCA	VCCB	VIO
	VCCA	VCCB
UART1_DTR_MCU	A1	B1	UART1_DTR
	A1	B1
UART1_TD_MCU	A2	B2	UART1_TD
UART1_RD_MCU	A3	B3	UART1_RD
UART1_RTS_MCU	A4	B4	UART1_RTS
	A4	B4
	GND	OE
			10K
			VGPIO
		c
	b		nF
			nF
		e
		c
	b		nF
		e

									F err ite bea d
				+	+	+	+	+
330 pF	100 nF	1 μ F	22 μ F	220 μ F	220 μ F	220 μ F	220 μ F	220 μ F	0
VIO
UA R T1_DTR
UA R T1_TD
UA R T1_RD									0.1u
UA R T1_ R TS
RESET
					VBAT
LED _ST AT U S
					470Ω
		LED _ST AT U S
			2.2K		b	c
					b
						e

	Issue 06 (2013-06-13)	Huawei Proprietary and Confidential	52
		Copyright © Huawei Technologies Co., Ltd.

Image 52

Contents Issue Date Hardware GuideNo Warranty About This Document HistoryVersion Date Chapter Descriptions CreationVersion Date Chapter Descriptions Updated -3 Recommended Updated .8 Audio InterfaceSpecifications 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 DCEVcoin Interface Power-On and Power-Off Time SequenceVIO Interface Pin for controlling power-on and power-off Power-On Time SequencePin for resetting the hardware Power-Off Time Sequence Signal Control InterfaceReset Input Signal Control Pins Pin for network status LEDApplication Device Output Signal Control PinWorking 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 LedstatuUART1RIN UART1 UART1RDUART1DSR UART1RTS UART1DTR UART1CTS UART1DCD Power Supply Features Input Power SupplyWorking Current Parameter Minimum Value Typical Value Maximum Value UnitConfiguration Working Mode Typical value Unit RemarkBand Typical Unit Reliability Features Configuration ValueUp/1 Down 123 Test Condition StandardTest Condition Standard ESD Test Standard Contact Discharge Air Discharge ESD FeaturesEN61000-4-2 ±4 kV ±8 kV Dimensions Mechanical SpecificationsDimensions 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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