Ublox SARA-G340 ATEX - Contents; Table of Contents

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SARA-G3 and SARA-U2 series - System Integration Manual

UBX-13000995 - R26 Contents

Page 5 of 217

Contents

Preface ................................................................................................................................ 4

Contents .............................................................................................................................. 5

1 System description ..................................................................................................... 10

1.1 Overview ............................................................................................................................................ 10

1.2 Architecture ........................................................................................................................................ 13

1.2.1 Internal blocks ............................................................................................................................. 15

1.3 Pin-out ............................................................................................................................................... 17

1.4 Operating modes ................................................................................................................................ 22

1.5 Supply interfaces ................................................................................................................................ 24

1.5.1 Module supply input (VCC) ......................................................................................................... 24

1.5.2 RTC supply input/output (V_BCKP) .............................................................................................. 33

1.5.3 Generic digital interfaces supply output (V_INT) ........................................................................... 34

1.6 System function interfaces .................................................................................................................. 35

1.6.1 Module power-on ....................................................................................................................... 35

1.6.2 Module power-off ....................................................................................................................... 39

1.6.3 Module reset ............................................................................................................................... 41

1.6.4 External 32 kHz signal input (EXT32K) ......................................................................................... 42

1.6.5 Internal 32 kHz signal output (32K_OUT) .................................................................................... 42

1.7 Antenna interface ............................................................................................................................... 43

1.7.1 Antenna RF interface (ANT) ......................................................................................................... 43

1.7.2 Antenna detection interface (ANT_DET) ...................................................................................... 44

1.8 SIM interface ...................................................................................................................................... 44

1.8.1 (U)SIM card interface ................................................................................................................... 44

1.8.2 SIM card detection interface (SIM_DET) ....................................................................................... 44

1.9 Serial interfaces .................................................................................................................................. 45

1.9.1 Asynchronous serial interface (UART) .......................................................................................... 46

1.9.2 Auxiliary asynchronous serial interface (AUX UART) ..................................................................... 59

1.9.3 USB interface .............................................................................................................................. 63

1.9.4 DDC (I

C) interface ...................................................................................................................... 66

1.10 Audio interface ............................................................................................................................... 68

1.10.1 Analog audio interface ................................................................................................................ 68

1.10.2 Digital audio interface ................................................................................................................. 70

1.10.3 Voice-band processing system ..................................................................................................... 72

1.11 General Purpose Input/Output (GPIO) ............................................................................................. 76

1.12 Reserved pins (RSVD) ...................................................................................................................... 80

1.13 System features............................................................................................................................... 81

1.13.1 Network indication ...................................................................................................................... 81

1.13.2 Antenna detection ...................................................................................................................... 81

1.13.3 Jamming detection ...................................................................................................................... 81