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Document MT0513P.C
© Xsens Technologies B.V.
User Manual MTi 1-series DK
4.1.1 Connections and peripheral switch
The MTi Development Board has the following connections and switches:
24-pins dual row header with a pitch of 2.54 mm: The table below shows the connections: For information
on the connections, refer to the pin description in section 4.2. Refer to Table 3 on how to enable the various
interfaces on the Development Board.
Table 1. Connections on 24-pins header
Pin nr
Pin nr
1
VDD
2
VDDIO
3
GND
4
GND
5
nRST
6
NC
7
NC
8
NC
9
UART TX or I
2
C SCL
10
RS232-TX
11
UART RX or I
2
C SDA
12
RS232-RX
13
UART-RTS
14
RS232-RTS
15
UART-CTS or DRDY
16
RS232-CTS
17
SPI-SCK or ADD0
18
GND
19
SPI-MISO or ADD1
20
RESERVED
21
SPI-MOSI or ADD2
22
SYNC_IN
23
SPI-nCS
24
GND
Micro USB: the MTi-1 Development Board has a micro USB connection that can be used to connect directly
to a USB port on a PC or laptop. To enable the communication via USB, make sure to have the peripheral
selection set to UART (full duplex).
Peripheral switch: This switch sets the interface configuration of the 12.1 x 12.1 mm module in the socket of
the MTi-1 Development Board.
Table 2. Settings for switch
Lever nr
Description
Comments
1
VDDIO_3.0V
Sets the VDDIO of UART, SPI and I
2
C to 3.0V, if VDDIO is
not supplied to pin nr 2 of the 24-pins connector. Setting a
VDDIO, either external or with this lever, is required to
properly define the voltage levels of SYNC_IN.
2
VDDIO_1.8V
Sets the VDDIO of UART, SPI and I
2
C to 1.8V, if VDDIO is
not supplied to pin nr 2 of the 24-pins connector. When
VDDIO_3.0V is selected as well, VDDIO will be 3.0V. Setting
a VDDIO, either external or with this lever, is required to
properly define the voltage levels of SYNC_IN.
3
PSEL0
PSEL0
PSEL1
Peripheral
2
0
0
UART_FD
1
0
UART_HD
0
1
SPI
1
1
I
2
C
4
PSEL1
5
RS232
Set this lever to 1 (high) to enable RS232 communication.
Also, PSEL0 and PSEL1 must be set to UART. This lever
must be set to 0 to enable I
2
C. RTS/CTS need to be
connected when set to UART_FD. Setting to UART_HD
when leaving RTS/CTS unconnected.
6
NC
N/A
2
Note that the values for the peripheral selection on the switch are inverted with respect to the values on the module
