NXP Semiconductors
S32K344
White Board
Figure 9. External crystals for MCU
8.1.3 MCU reset control
The MCU RESET pin is bidirectional. When acting as input, MCU can be reset either by
push button “SW1” on the board or SBC RESET signal. When acting as output, some
MCU internal failures (such as watchdog timeout) will pull RESET pin low and SBC can
sense the MCU reset event and react accordingly.
8.1.4 MCU debug interface
The White Board provides two types of debug interface 10-pin connector (SWD/JTAG)
and 20-pin connector (JTAG with ETM). The pins used are listed in below table. JTAG
pins are necessary for debugging the MCU and the TRACE pins are optional.
JTAG_TMS PTA4
JTAG_TCLK PTC4
JTAG_TDO PTA10
JTAG_TDI PTC5
JTAG
RESET PTA5
TRACE_CLKOUT PTG6
TRACE_D0 PTG7
TRACE_D1 PTG15
TRACE_D2 PTG16
TRACE
TRACE_D3 PTF31
Table 9. Debug interface pins
UM11919 All information provided in this document is subject to legal disclaimers. © 2023 NXP B.V. All rights reserved.
User manual Rev. 1.0 — 11 April 2023
COMPANY PUBLIC 16 / 32
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