EVK-M10QSAM - User guide
4.1.4.1 RS-232
The EVK can be connected to a PC using a maximum 3 m straight RS-232 serial cable with male and
female connectors. The RS-232 port needs to be configured to connect to the PC. To do this, use
the UBX-CFG-VALSET command and select the CFG-UART1 Configuration group in the u-center
2 evaluation tool. The maximum operating baud rate is 230400 baud. Note, if a USB-to-RS-232
adapter cable is used, it can be connected directly to the RS-232 port of the evaluation kit. The
RS-232 port also provides a TIMEPULSE output signal.
The 9-pin RS-232 female connector is assigned as listed below:
Pin no.
Assignment
1 & 6
Time pulse
2
TXD (GNSS Transmit Data)
3
RXD (GNSS Receive Data)
4
not connected
5
GND
7, 8 & 9
not connected
Table 5: EVK-M10QSAM RS-232 connector pin description
4.1.4.2 UART through 14-pin connector
The EVK also provides UART communication through the 14-pin connector on pins TxD and RxD.
See section
for more information.
4.1.5 I2C
The 14-pin connector contains pins for evaluating I2C bus communication. By default, the I2C pull-
up resistors are populated on the EVK board which help if fast communication speed with long cable
length is needed.
4.2 GNSS input signal
The SAM-M10Q module is embedded with a GNSS patch antenna and the signal is further
filtered and amplified by the internal SAW filter and internal Low Noise Amplifier (LNA). For more
information, see the SAM-M10Q Hardware Integration Manual [
External antenna connectivity through SMA connector is not available in the EVK-M10QSAM.
4.3 Time pulse
u-blox receivers include a time pulse function that provides pulses with a configurable pulse period,
pulse length and polarity (rising or falling edge). The u-center 2 evaluation tool can be used to
configure the time pulse parameters. The time pulse signal is available at the 14-pin and RS-232
connectors. In addition, the time pulse signal is inverted and connected to the LED on the front side
of the EVK.
The time pulse signal from the 14-pin connector has 50 ohms output and thus, no fast slope
output signal is possible.
4.4 Reset button
The RST button on the front side resets the SAM-M10Q module.
UBX-22026860 - R01
4 Device description
Page 11 of 29
C1-Public
