u-blox ANTARIS 4 - Power Saving Modes; Operating Modes

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your position is our focus
4.2.4 Power Saving
rating Mo
The ANTARIS
®
4 GPS tec
functions.Thereceiverus thepowerconsumptionatanygiven
ge k
speeds,theCPU
canstillrespondtointerruptsandgearupCPUclockquicklyifrequiredbythecomputingtask.
ntlym w consumption.Furthermore,theclock
supplytounusedperipher
TheANTARIS
®
4GPSTech finesthefollowingOperatingModes:
Modes
4.2.5 Ope des
hnology offers ultra-low power architecture with built-in autonomous power save
esAutonomousPowerManagementtominimize
time.TheCPUclockis areddowneverytimethefullCPUperformanceisnotneeded.Evenatverylowcloc
Thesoftwarefreque akesuseofthisfeaturetoreduceaveragepo
alon-chipblocksisshutdownbysoftware.
nologyde
er
Operating Modes Descriptio n
Continuous Tracking M
isoptimizedforpositionaccuracy.
dforminimalpowerconsumptionbasedon
Management.
odeisthedefaultsettingofthe
ANTARIS
®
4GPSreceiver.Thereisnospecificconfigurationneeded.
ode (CTM)
TheContinuousTrackingMode
Thismodeisoptimize
theAutonomous Power
TheContinuousTrackingM
Power Saving Mode:
FixNOW™ Mode (FXN)
FixNOW™Modeallowsanapplicationtorequestanavigation
solutionasrequired.Itincludesadditionalpowersavefunctionsand
isthebestmodeforanymobile,trackingunitapplicationwherelow
powerconsumptionisofprimaryconsideration.
suitablefor
DRenabledGPSreceivers!
Thismodecanbeconfiguredfordifferentapplicationrequirements.
 Note Not
Table 9: Operating Modes
er
alwaysrunsinthemost icpowerstateandswitchesoffinternalmodulesthatarenotinuse.(E.g.ifno
in ut prot is sel  for  the respective gates on the ASIC
 will not be clocked
a itchedof ydefaul
 N eupdatera influenc thepo
 N tialacquisit nandre uisitio 
consumption about 5% higher ition compared to typical operation
(tracking)
Choosing an Operation Strategy
The ANTARIS
®
4 GPS receivers offer different features to optimize theoverall power consumption.The receiv
econom
put and/oroutp ocol ected a serial port,
ndtheSPIissw fb t).
ote Th te es werconsumptionandpositionaccuracy.
ote Ini io acq nneedsmaximumpowerasspecifiedinthedatasheet.Thepower
is during initial acquis
status.
GPSModules-SystemIntegrationManual(SIM)(incl.ReferenceDesign) ReceiverDescription
GPS.G4-MS4-05007-A1
  Page 63