u-blox ANTARIS 4 - GPSMODE Pin Configuration (ROM Only; Low Cost Receivers)

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4.8.2 GPSMODE Pin Configuration (ROM only / Low Cost Receivers)
This section only applies to TIM-4A/LEA-4A and TIM-4S/LEA-4S.
4.8.2.1 Start-Up Pin Configuration (GPSMODE Pins)
Thestart-upconfigurationofROMbasedreceiverslikeTIM-4A/LEA-4Aor TIM-4S/LEA-4Sisdefinedbythestatus
of the GPSMODE pins after system reset. The default configuration can by altered by pulling up or down a
number of so-called GPSMODE pins (see Section 4.8.2.1 and Table 47) Alternatively, the system can be
configuredthrough
messagecommandspassedthroughtheserialinterfaceafterstart-up. re 93depictsthe
start-upprocedureofANTARIS
®
4GPSreceivers.
Figu
FirmwareStart
BBRorFLASH
a
Configuration
vailable?
GPSMODE
Configuration
enabled?
Revert to default
Firmware Setting
Use Custom
Settings
No
No
Yes
Yes

Figure 93: ANTARIS
®
4 GPS Technology Start-Up Procedure
 canbechangedatanytimesendingappropriateconfigurationcommands
TIM and LE MODE configurationsof  the ANTARIS
4 Chipset dueto
limitedpinsavailableonthemodule.
Note Thestart-upconfiguration
overserialport.
Areceivers support onlya subset ofall GPS
®
Pin Function
TIM-4A/ TIM-4S LEA-4A LEA-4S
GPSMODE2
z z

GPSMODE3
z

GPSMODE23
GPSsensitivitysettings

z
GPSMODE5
z z z
GPSMODE6
SerialI/Oconfiguration
z z z
GPSMODE7
USBPowerMode
18

z z
GPSMODE12
SerialI/Oconfiguration
z

z:Available
Table 47: Available GPSMODE’s

18
RedefinedGPSMODEfunctionforANTARIS
®
4–caution whenimplementingintoANTARIS
®
designse.g.LEA-LA
GPSModules-SystemIntegrationManual(SIM)(incl.ReferenceDesign) ReceiverDescription
GPS.G4-MS4-05007-A1
  Page 118