Huawei MG323 manual Contents

HUAWEI MG323 GSM M2M Module
Hardware Guide	Contents

Contents

1 Introduction				8
1.1	Overview			8
2 Overall Description				9
2.1 About This Chapter				9
2.2	Function Overview			9
2.3 Application Block Diagram			..............................................................................................................	11
2.4	Circuit Block Diagram			11
3 Description of the Application Interfaces				13
3.1 About This Chapter				13
3.2	B2B Connector Interface			13
3.3	Power Interface			16
	3.3.1 Overview			16
	3.3.2 VBAT Interface			17
	3.3.3 VCOIN Interface			18
	3.3.4 VIO Interface			18
3.4	Power-On and Power-Off Time Sequence			18
	3.4.1 Overview			18
	3.4.2 Power-On Time Sequence			19
	3.4.3 Power-Off Time Sequence			20
	3.4.4 RESET			20
3.5	Signal Control Interface			20
	3.5.1 Overview			20
	3.5.2 Input Signal Control Pins			21
	3.5.3 Output Signal Control Pin			22
3.6	UART Interface			23
	3.6.1 Overview			23
	3.6.2 Circuit Recommended for the UART Interface			24
3.7	SIM Card Interface			25
	3.7.1 Overview			25
	3.7.2 Circuit Recommended for the SIM Card Interface			26
3.8 Audio Interface				27
4 Antenna Interface				29
			Huawei Proprietary and Confidential
Issue 06 (2013-06-13)				6
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