Integration Manual

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SARA-R4/N4 series - System Integration Manual

UBX-16029218 - R13 Page 3 of 119

Contents

Document Information ................................................................................................................................. 2

Contents........................................................................................................................................................ 3

1 System description ................................................................................................................................. 6

1.1

Overview .................................................................................................................................................................. 6

1.2

Architecture ............................................................................................................................................................. 9

1.3

Pin-out ................................................................................................................................................................... 10

1.4

Operating modes ................................................................................................................................................... 14

1.5

Supply interfaces ................................................................................................................................................... 17

1.5.1

Module supply input (VCC) ........................................................................................................................... 17

1.5.2

Generic digital interfaces supply output (V_INT) .......................................................................................... 22

1.6

System function interfaces .................................................................................................................................... 23

1.6.1

Module power-on ......................................................................................................................................... 23

1.6.2

Module power-off ......................................................................................................................................... 24

1.6.3

Module reset ................................................................................................................................................. 25

1.7

Antenna interface .................................................................................................................................................. 27

1.7.1

Antenna RF interface (ANT) .......................................................................................................................... 27

1.7.2

Antenna detection interface (ANT_DET) ...................................................................................................... 27

1.8

SIM interface ......................................................................................................................................................... 28

1.8.1

SIM interface ................................................................................................................................................. 28

1.8.2

SIM detection interface ................................................................................................................................ 28

1.9

Data communication interfaces ............................................................................................................................ 29

1.9.1

UART interface .............................................................................................................................................. 29

1.9.2

USB interface ................................................................................................................................................ 30

1.9.3

SPI interface .................................................................................................................................................. 32

1.9.4

SDIO interface ............................................................................................................................................... 32

1.9.5

DDC (I

C) interface ........................................................................................................................................ 32

1.10

Audio...................................................................................................................................................................... 32

1.11

General Purpose Input/Output .............................................................................................................................. 33

1.12

Reserved pins (RSVD) ............................................................................................................................................. 33

1.13

System features ..................................................................................................................................................... 34

1.13.1

Network indication ....................................................................................................................................... 34

1.13.2

Antenna supervisor ....................................................................................................................................... 34

1.13.3

Dual stack IPv4/IPv6 ...................................................................................................................................... 34

1.13.4

TCP/IP and UDP/IP ........................................................................................................................................ 34

1.13.5

FTP ................................................................................................................................................................ 34

1.13.6

HTTP .............................................................................................................................................................. 34

1.13.7

Firmware update Over AT (FOAT) ................................................................................................................. 35

1.13.8

Firmware update Over The Air (uFOTA) ....................................................................................................... 35

1.13.9

Power saving ................................................................................................................................................. 35

2 Design-in .............................................................................................................................................. 38

2.1

Overview ................................................................................................................................................................ 38

2.2

Supply interfaces ................................................................................................................................................... 39