EVK-M10QSAM - User guide
Figure 2: EVK-M10QSAM front and back side
4.1.1 Interface switch
Use the interface switch on the front side of the evaluation kit to choose between the RS-232 and
USB communication ports.
CAUTION
Changing the interface switch position while the EVK is powered on may damage the
GNSS receiver chip. Power off the EVK before changing the interface switch setting.
• RS-232 – In this selection, the EVK operates with the RS-232 (DB9 – back side).
• USB – In this selection, the EVK operates only with the USB interface. RS-232 (DB9) is switched
off.
4.1.2 14-pin connector
The EVK-M10QSAM front side has a 14-pin connector that provides programmable input/output
signals, communication interfaces and supply options. All these pins are ESD protected. The 14-pin
connector can be used for communicating with the receiver through the UART and I2C interfaces.
In addition, the 14-pin connector provides flexibility for evaluating other advanced scenarios.
Pin no.
Pin name
I/O
Level
Description
14
V5_IN
I
4.75 - 5.25 V
Power input – can be used instead of USB.
13
GND
I
-
Common ground pin.
12
P1A (VCC)
O
3.3 V
Power output – max. current supply 100 mA.
1 Ω 5% resistor for over-all current measurement to pin 11
(P1B).
11
P1B
O
-
Second connection for overall current measurement as shown
in
10
P2A
O
3.0 V
Battery output (unloaded).
100 Ω 5% resistor for battery backup current measurement
to pin 9 (P2B).
NOTE: There is a current protection to 3 mA. See circuit in
UBX-22026860 - R01
4 Device description
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