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FIBOCOM FG621-LA Series Hardware Guide
Page 4 of 57
Contents
1 Foreword ........................................................................................................................... 7
1.1 Document Introduction ......................................................................................................... 7
1.2 Safety Precautions ............................................................................................................... 7
2 Product Overview ............................................................................................................. 9
2.1 Product Introduction ............................................................................................................. 9
2.2 Product Specification ............................................................................................................ 9
2.3 Functional Diagram ............................................................................................................ 11
2.4 Development Board ........................................................................................................... 12
3 Pin Description ............................................................................................................... 13
3.1 Pin Distribution ................................................................................................................... 13
3.2 Pin Function ....................................................................................................................... 14
4 Electrical Characteristics ............................................................................................... 21
4.1 Power ................................................................................................................................. 21
4.2 Power Supply ..................................................................................................................... 21
4.3 Power Output ..................................................................................................................... 23
4.4 Power Consumption ........................................................................................................... 23
5 Functional Interface........................................................................................................ 26
5.1 Control Interface................................................................................................................. 26
5.1.1 Power-on/Off ....................................................................................................................... 26
5.1.1.1 Power-on ........................................................................................................................................ 26
5.1.1.2 Shutdown ....................................................................................................................................... 27
5.1.2 Reset................................................................................................................................... 28
5.2 Network Status Indication Interface .................................................................................... 29
5.3 (U)SIM Card Interface ........................................................................................................ 31
5.3.1 (U)SIM Pin Definition .......................................................................................................... 31
5.3.2 (U)SIM Interface Circuit ...................................................................................................... 31
5.3.2.1 (U)SIM Card Connector with Card Detection Signal ....................................................................... 31
5.3.2.2 (U)SIM Card Connector without Detection Signal .......................................................................... 33
5.3.3 (U)SIM Hot Plug.................................................................................................................. 33
5.3.4 (U)SIM Design Requirements ............................................................................................ 34
5.4 USB Interface ..................................................................................................................... 34
5.5 UART Interface .................................................................................................................. 35