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

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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

 

 

Copyright © Huawei Technologies Co., Ltd.

 

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Huawei MG323 manual Contents