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A Migration to u-blox 5 receivers
®
Migrating ANTARIS
4 to a u-blox 5 GPS/GALILEO receiver is a straightforward procedure. Nevertheless there are
some points to be considered during the migration.
Not all of the functionalities available with ANTARIS
•
FixNow Mode
•
Low Power Modes
•
RTCM
•
UTM
A.1 Migration from NEO-4S to NEO-5
The pin-outs of NEO-4S and NEO-5M/NEO-5Q differ slightly. Table 5 compares the modules and highlights the
differences to be considered.
NEO-4S
Pin Name
Typ. Assignment
1
BOOT_INT
NC
VDDIO level I/O;
2
SELECT
not connected
3
TIMEPULSE
VDDIO level I/O
4
EXTINT0
NC
5
USB_DM
NC
NC
6
USB_DP
Connected to
7
VDDUSB
GND or
VDD_USB
8
Reserved
NC
9
VCC_RF
VCC-0.1V
10
GND
GND
11
RF_IN
RF_IN
12
GND
GND
13
GND
GND
NC
14
MOSI
15
MISO
NC
SCK/
16
RF_IN
CFG_USB
17
NCS
NC
18
Reserved
NC
19
Reserved
NC
20
TXD1
VDDIO level I/O
VDDIO level I/O
21
RXD1
22
V_BAT
1.5-3.6V
23
VCC
2.7-3.3V
24
GND
GND
: Pins to be checked carefully; NC: Not connected
Table 5: Pin-out comparison NEO-4S vs. NEO-5
NEO-5 - Hardware Integration Manual
GPS.G5-MS5-08003-A2
NEO-5
Pin Name
Typ. Assignment
Reserved
NC
NC/
NC
SS_N
TIMEPULSE
Output
EXTINT0
NC
USB_DM
NC
NC
USB_DP
Connected to
VDDUSB
GND or
VDD_USB
Reserved
NC
VCC_RF
VCC-0.1V
GND
GND
RF_IN
RF_IN
GND
GND
GND
GND
NC
MOSI/CFG_COM0
MISO/NC
NC
SCK/CFG_GPS0/
NC
NC
SCS1_N/
NC
NC
SDA2
NC
SCL2
NC
TxD1
Output
Input
RxD1
V_BCKP
1.4-4.8V
VCC
2.7-3.6V
GND
GND
Preliminary
u-blox proprietary
®
4 are supported by u-blox 5. These include:
Remarks for Migration
do not drive low.
NEO-5M: NC
NEO-5Q: SS_N
Do not leave open. (VDD_USB is 3.3V regulated
power supply from VBUS.)
Pins 8 and 9 must be connected.
No difference
No difference
No difference
No difference
No difference
Leave open if not used.
No difference
Leave open if not used.
Wider voltage range but needs more current.
Check your backup supply, regarding the higher
consumption.
Higher peak supply current
No difference
Product Testing
Page 37
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