Ublox SARA-R4 Series - Contents; Table of Contents

SARA-R4/N4 series - System Integration Manual
UBX-16029218 - R11 Page 3 of 157
Contents
Document Information ............................................................................................................................ 2
Contents...................................................................................................................................................... 3
1 System description ............................................................................................................................ 7
1.1 Overview ........................................................................................................................................................................................... 7
1.2 Architecture ................................................................................................................................................................................... 11
1.3 Pin-out ............................................................................................................................................................................................. 12
1.4 Operating modes ....................................................................................................................................................................... 17
1.5 Supply interfaces ........................................................................................................................................................................ 21
1.5.1 Module supply input (VCC) ......................................................................................................................................... 21
1.5.2 Generic digital interfaces supply output (V_INT) .............................................................................................. 28
1.6 System function interfaces ..................................................................................................................................................... 30
1.6.1 Module power-on ............................................................................................................................................................ 30
1.6.2 Module power-off ............................................................................................................................................................ 31
1.6.3 Module reset ...................................................................................................................................................................... 33
1.7 Antenna interface ....................................................................................................................................................................... 35
1.7.1 Antenna RF interface (ANT) ......................................................................................................................................... 35
1.7.2 Antenna detection interface (ANT_DET) ................................................................................................................ 36
1.8 SIM interface................................................................................................................................................................................. 36
1.8.1 SIM interface ...................................................................................................................................................................... 36
1.8.2 SIM detection interface ................................................................................................................................................. 37
1.9 Data communication interfaces ........................................................................................................................................... 38
1.9.1 UART interface ................................................................................................................................................................... 38
1.9.2 USB interface ...................................................................................................................................................................... 40
1.9.3 SPI interface ........................................................................................................................................................................ 42
1.9.4 SDIO interface .................................................................................................................................................................... 42
1.9.5 DDC (I
2
C) interface........................................................................................................................................................... 42
1.10 Audio ................................................................................................................................................................................................ 42
1.11 General Purpose Input/Output ............................................................................................................................................ 44
1.12 Reserved pins (RSVD) ............................................................................................................................................................... 44
1.13 System features ........................................................................................................................................................................... 45