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D Migration to ANTARIS
®
Migrating ANTARIS
to an ANTARIS
some points to be considered
D.1 Software Changes
< Firmware 5.00 or
< ROM5
UBX-CFG-NAV
UBX-TIM-TM
UBX-CFG-TM
N/A
UBX-RXM-RAW
UBX-RXM-SFRB
D.2 Migration from LEA-LA to LEA-4A/LEA-4S
The pin-outs of LEA-LA and LEA-4A/LEA-4S modules do not differ significantly. Table 79 compares the modules
and highlights the differences to be considered.
LEA-LA
Pin Name
Typical Assignment
1
TXD2
VDDIO level I/O
VDDIO level I/O;
2
RXD2
pull up if not used
3
TXD1
VDDIO level I/O
VDDIO level I/O;
4
RXD1
pull up if not used
5
VDDIO
1.65 – 3.60V
6
VCC
2.70 – 3.30V
7
GND
GND
8
VDD18OUT
Not connected
Connected to GND
9
GPSMODE6
or VDD_18OUT
10
RESET_N
1.8V
11
V_BAT
1.95 – 3.6V
12
BOOT_INT
NC
GND
13
GND
14
GND
GND
15
GND
GND
16
RF_IN
RF_IN
17
G
ND
GND
18
VCC_RF
VCC - 0.1V
19
V_ANT
3.0V –5.0V
20
AADET_N
Connected to GND
Connected to GND
21
GPSMODE5
or VDD_18OUT
GPS Modules - System Integration Manual (SIM) (incl. Reference Design)
GPS.G4-MS4-05007-A1
®
4 GPS receiver is a very straightforward procedure. Nevertheless there are
during the migration.
Firmware 5.00 or
ROM5
UBX-CFG-NAV2
N/A
UBX-TIM-TM2
UBX-CFG-TM2
UBX-RXM-RAW
UBX-RXM-SFRB
LEA-4A / LEA -4S
Pin Name
TXD2
RXD2
TXD1
RXD1
VDDIO
VCC
GND
VDD18OUT
GPSMODE6
RESET_N
V_BAT
BOOT_INT
GND
GND
GND
RF_IN
GND
VCC_RF
V_ANT
AADET_N
GPSMODE5
®
4 receivers
Remarks
To ease the navigation configuration u-blox has introduced a new message. It
has also additional features. UBX-CFG-NAV is not supported anymore on
®
ANTARIS
4. See also Section 4.6.
Time mark feature
Starting with firmware version 5.0, these messages are not longer supported!
Improved Time Mark feature.
Only supported on LEA-4T.
Satellite RAW and subframe data.
These messages have the same format as on ANTARIS
receivers they are only supported on LEA-4T receivers.
Typical Assignment
VDDIO level I/O
No difference.
VDDIO level I/O;
Do not add an external pull up resistor; there is
not connected
one built-in to V_BAT. Leave open if not used.
VDDIO level I/O
No difference
Do not add an external pull up resistor; there is
VDDIO level I/O
one built-in to V_BAT. Leave open if not used.
To be compatible to LEA-LA, VDDIO has to be set
to Vcc to assure a 3.0V level at the serial ports.
1.65 – 3.60V
The GPSMODE pins do recognize 1.8V and 3.0V
as "high" value at VDDIO.
2.70 – 3.30V
No difference
GND
No difference
Not connected
No difference
Backward compatible: This pin can be connected
Not connected
to GND, VDD18OUT or VCC. An external pull up
resistor is not required as there is one built-in.
1.8V
No difference (see Section 4.9.2).
1.50 – 3.6V
Wider voltage range. Uncritical for migration.
N
C
No difference
GND
No difference
GND
No difference
GND
No difference
RF_IN
No difference
GND
No di
VCC - 0.1V
No difference
3.0V -5.0V
No difference
No external pull down resistor required, as there is
already an internal pull down resistor. Please check
Not connected
resistor values in Section 4.3.3.2
Backward compatible: This pin can be connected
to GND, VDD18OUT or VCC. An external pull up
Not connected
resistor is not required as there is one built-in.
your position is our focus
®
but on ANTARIS
Remarks for Migration
fference
Migration to ANTARISP®P4 receivers
®
4
Page 167
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