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User's Manual l MBa335x UM 0202 l © 2018, TQ-Systems GmbH
Page 46
4.3.2
Navigation buttons
Three navigation buttons are available on the MBa335x for development purposes. They are routed to a port expander and can
be read out via I2C0. The port expander registers the push button signal at interrupt output GPIO1_28, which makes debouncing
unnecessary.
Illustration 39:
Block diagram navigation buttons
Illustration 40:
Position of navigation buttons S5, S6, S7, and S10
Table 81:
Navigation buttons, component
Manufacturer / Number
Description
Knitter switch / TSS 61N
Push button
4.3.3
Power-On and Reset-button
For further information see section 4.1.5.
4.3.4
CAN and RS-485 termination
For further information see section 4.2.4 and 4.2.5.
S5 S6 S7 S10