Ublox SARA-R422 - Contents; Table of Contents

SARA-R4 series - System integration manual
UBX-16029218 - R20 Contents Page 3 of 128
C1-Public
Contents
Document information ................................................................................................................................ 2
Contents .......................................................................................................................................................... 3
1 System description ............................................................................................................................... 6
1.1 Overview ........................................................................................................................................................ 6
1.2 Architecture ...............................................................................................................................................10
1.3 Pin-out .........................................................................................................................................................13
1.4 Operating modes .......................................................................................................................................18
1.5 Supply interfaces ......................................................................................................................................21
1.5.1 Module supply input (VCC) .............................................................................................................21
1.5.2 Generic digital interfaces supply output (V_INT) .......................................................................27
1.6 System function interfaces ....................................................................................................................28
1.6.1 Module power-on ..............................................................................................................................28
1.6.2 Module power-off ..............................................................................................................................29
1.6.3 Module reset ......................................................................................................................................31
1.7 Antenna interfaces ...................................................................................................................................32
1.7.1 Cellular antenna RF interface (ANT) .............................................................................................32
1.7.2 GNSS antenna RF interface (ANT_GNSS) ...................................................................................33
1.7.3 Antenna detection interface (ANT_DET).....................................................................................34
1.8 SIM interface ..............................................................................................................................................34
1.8.1 SIM interface .....................................................................................................................................34
1.8.2 SIM detection interface ...................................................................................................................34
1.9 Data communication interfaces ............................................................................................................35
1.9.1 UART interfaces ................................................................................................................................35
1.9.2 USB interface .....................................................................................................................................37
1.9.3 SPI interface ......................................................................................................................................38
1.9.4 SDIO interface ...................................................................................................................................38
1.9.5 DDC (I2C) interface ...........................................................................................................................38
1.10 Audio ............................................................................................................................................................39
1.11 General Purpose Input/Output ...............................................................................................................39
1.12 GNSS peripheral input output ................................................................................................................40
1.13 Reserved pins (RSVD) ..............................................................................................................................40
2 Design-in ................................................................................................................................................ 41
2.1 Overview ......................................................................................................................................................41
2.2 Supply interfaces ......................................................................................................................................42
2.2.1 Module supply (VCC) ........................................................................................................................42
2.2.2 Generic digital interfaces supply output (V_INT) .......................................................................58
2.3 System functions interfaces ..................................................................................................................59
2.3.1 Module PWR_ON / PWR_CTRL input ............................................................................................59
2.3.2 Module RESET_N input ...................................................................................................................60
2.4 Antenna interfaces ...................................................................................................................................61