Ublox ZED-F9R User Manual

ZED-F9R-Integration manual
3.6 Communication interfaces................................................................................................................. 49
3.6.1 UART............................................................................................................................................... 50
3.6.2 I2C interface..................................................................................................................................51
3.6.3 SPI interface..................................................................................................................................54
3.6.4 USB interface................................................................................................................................ 55
3.7 Predefined PIOs.....................................................................................................................................56
3.7.1 D_SEL..............................................................................................................................................56
3.7.2 RESET_N........................................................................................................................................ 56
3.7.3 SAFEBOOT_N................................................................................................................................56
3.7.4 TIMEPULSE................................................................................................................................... 57
3.7.5 TX_READY..................................................................................................................................... 57
3.7.6 EXTINT............................................................................................................................................57
3.7.7 WT and DIR inputs...................................................................................................................... 58
3.7.8 GEOFENCE_STAT interface....................................................................................................... 58
3.7.9 RTK_STAT interface.....................................................................................................................59
3.8 Antenna supervisor.............................................................................................................................. 59
3.8.1 Antenna voltage control - ANT_OFF........................................................................................60
3.8.2 Antenna short detection - ANT_SHORT_N............................................................................ 61
3.8.3 Antenna short detection auto recovery.................................................................................. 61
3.8.4 Antenna open circuit detection - ANT_DETECT................................................................... 62
3.9 Multiple GNSS assistance (MGA)..................................................................................................... 62
3.9.1 Authorization................................................................................................................................ 63
3.9.2 Preserving MGA and operational data during power-off..................................................... 63
3.9.3 Save-on-shutdown feature........................................................................................................ 63
3.9.4 Advanced calibration handling..................................................................................................64
3.10 Clocks and time.................................................................................................................................. 65
3.10.1 Receiver local time.................................................................................................................... 65
3.10.2 Navigation epochs.....................................................................................................................66
3.10.3 iTOW timestamps..................................................................................................................... 67
3.10.4 GNSS times.................................................................................................................................67
3.10.5 Time validity................................................................................................................................67
3.10.6 UTC representation...................................................................................................................68
3.10.7 Leap seconds..............................................................................................................................68
3.10.8 Real-time clock...........................................................................................................................69
3.10.9 Date...............................................................................................................................................69
3.10.10 Time pulse................................................................................................................................ 70
3.10.11 Time mark.................................................................................................................................73
3.11 Security.................................................................................................................................................74
3.11.1 Spoofing detection / monitoring............................................................................................ 75
3.11.2 Jamming interference-Detection and Monitoring............................................................. 75
3.11.3 UBX-SEC-SIG message description.......................................................................................75
3.11.4 UBX-SEC-SIGLOG message description...............................................................................76
3.11.5 GNSS receiver integrity............................................................................................................76
3.12 u-blox protocol feature descriptions.............................................................................................. 77
3.12.1 Broadcast navigation data...................................................................................................... 77
3.13 Forcing a receiver reset.....................................................................................................................84
3.14 Firmware upload................................................................................................................................. 84
4 Design..................................................................................................................................... 86
4.1 Pin assignment......................................................................................................................................86
4.2 Power supply..........................................................................................................................................88
UBX-20039643 - R06
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Contents Page 4 of 119
C1-Public

Ublox ZED-F9R Specifications

General

Brand	Ublox
Model	ZED-F9R
Category	Receiver
Language	English