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Document MT1503P.A
© Xsens Technologies B.V.
Hardware Integration Manual MTi 1-series
3.2.1 PSEL serial host communication interface selection
The MTi 1-series modules has four modes of peripheral interfacing. Only one mode can be used at a
time and this is determined by the state of peripheral selection pins PSEL0 and PSEL1 at start up. Table
5 specifies how the PSEL lines select the peripheral interface. Note that the module has internal pull-ups
(30 kΩ – 50 kΩ). Not connecting PSEL results in a value of 1, connecting PSEL to GND results in a
value of 0.
Table 5: Serial host interface selection
Interface
PSEL1
PSEL0
I
2
C
1
1
SPI
1
0
UART half-duplex
0
1
UART full-duplex
0
0
