u-blox ZED-F9T - Default Chapter; Table of Contents

ZED-F9T-Integration Manual
Contents
1 Integration manual structure............................................................................................ 6
2 System description...............................................................................................................7
2.1 Overview.................................................................................................................................................... 7
2.1.1 Differential timing.......................................................................................................................... 7
2.2 Architecture..............................................................................................................................................7
2.2.1 Block diagram..................................................................................................................................8
3 Receiver functionality.......................................................................................................... 9
3.1 Receiver configuration........................................................................................................................... 9
3.1.1 Changing the receiver configuration..........................................................................................9
3.1.2 Default GNSS configuration.........................................................................................................9
3.1.3 Default interface settings..........................................................................................................10
3.1.4 Basic receiver configuration...................................................................................................... 10
3.1.5 Differential timing mode configuration...................................................................................12
3.1.6 Legacy configuration interface compatibility........................................................................ 15
3.1.7 Navigation configuration............................................................................................................15
3.2 Geofencing..............................................................................................................................................20
3.2.1 Introduction................................................................................................................................... 20
3.2.2 Interface......................................................................................................................................... 21
3.2.3 Geofence state evaluation......................................................................................................... 21
3.2.4 Using the geofence pin state output...................................................................................... 21
3.3 Interfaces................................................................................................................................................21
3.3.1 UART interfaces........................................................................................................................... 23
3.3.2 SPI interface..................................................................................................................................23
3.3.3 USB interface................................................................................................................................23
3.3.4 D_SEL interface............................................................................................................................ 24
3.3.5 RESET_N interface...................................................................................................................... 24
3.3.6 SAFEBOOT_N interface..............................................................................................................24
3.3.7 TIMEPULSE interface..................................................................................................................25
3.3.8 Display data channel (DDC)....................................................................................................... 25
3.3.9 Antenna supervisor..................................................................................................................... 25
3.3.10 EXTINT......................................................................................................................................... 28
3.3.11 Communication ports...............................................................................................................28
3.4 Multiple GNSS assistance (MGA)..................................................................................................... 33
3.4.1 AssistNow Online......................................................................................................................... 33
3.4.2 Host software............................................................................................................................... 34
3.4.3 AssistNow Online sequence...................................................................................................... 34
3.4.4 Flow control................................................................................................................................... 35
3.4.5 Authorization................................................................................................................................ 35
3.4.6 Service parameters......................................................................................................................35
3.4.7 Multiple servers............................................................................................................................37
3.5 Clocks and time.....................................................................................................................................37
3.5.1 Receiver local time.......................................................................................................................37
3.5.2 Navigation epochs....................................................................................................................... 37
3.5.3 iTOW timestamps........................................................................................................................38
UBX-19005590 - R01
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