Table Of Contents; Contents - Quectel RM520N-GL Hardware Design

Contents

Safety Information ....................................................................................................................................... 3
About the Document ................................................................................................................................... 4
Contents ....................................................................................................................................................... 5
Table Index ................................................................................................................................................... 8
Figure Index ............................................................................................................................................... 10
1 Introduction ........................................................................................................................................ 11
1.1. Introduction ............................................................................................................................... 11
1.2. Reference Standard .................................................................................................................. 11
1.3. Special Mark ............................................................................................................................. 12
2 Product Concept ................................................................................................................................ 16
2.1. General Description .................................................................................................................. 16
2.2. Key Features ............................................................................................................................. 17
2.3. Evaluation Board ....................................................................................................................... 19
2.4. Functional Diagram ................................................................................................................... 20
2.5. Pin Assignment ......................................................................................................................... 20
2.6. Pin Description .......................................................................................................................... 21
3 Operating Characteristics ................................................................................................................. 27
3.1. Operating Modes ....................................................................................................................... 27
3.1.1. Sleep Mode .................................................................................................................... 27
3.1.2. Airplane Mode ................................................................................................................ 29
3.2. Communication Interface with a Host ....................................................................................... 29
3.3. Power Supply ............................................................................................................................ 30
3.3.1. Decrease Voltage Drop .................................................................................................. 30
3.3.2. Reference Design for Power Supply .............................................................................. 31
3.3.3. Monitor the Power Supply .............................................................................................. 32
3.4. Turn on ...................................................................................................................................... 32
3.5. Turn off ...................................................................................................................................... 34
3.6. Reset ......................................................................................................................................... 35
4 Application Interfaces ....................................................................................................................... 39
4.1. (U)SIM Interface ........................................................................................................................ 39
4.1.1. Pin definition of (U)SIM .................................................................................................. 39
4.1.2. (U)SIM Hot-Plug ............................................................................................................. 40
4.1.3. Normally Closed (U)SIM Card Connector...................................................................... 41
4.1.4. Normally Open (U)SIM Card Connector ........................................................................ 42
4.1.5. (U)SIM Card Connector Without Hot-Plug ..................................................................... 42
4.1.6. (U)SIM2 Card Compatible Design ................................................................................. 43
4.1.7. (U)SIM Design Notices................................................................................................... 44
4.2. USB Interface ............................................................................................................................ 44
4.3. PCIe Interface ........................................................................................................................... 46
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