NXP Semiconductors
UM12036
MCX-N9XX-EVK Board User Manual
Part
identifier
Jumper type Description Reference section
Note: Default setting for LDO_CORE disable case.
JP19 1x2 pin header • Open (default setting): Enables serial port connection
(VCOM) between MCU-Link and the target MCU
(connected through pins P1_8 and P1_9)
• Shorted: Sends a low signal on HW_VER_6 to disable
serial port connection (VCOM) available between the
MCU-Link LPC55S69 and the MCX N94X MCU
Section 3.8
JP21 1x3 pin header • Pin 1-2 shorted (default setting): Port P1 pin 11 (P1_11)
connects to P3T1755DP temperature sensor if jumper
JP23 is shorted
• Pin 2-3 shorted: Port P1 pin 11 (P1_11) connects to the
FlexIO header
For more information
on this jumper, see
MCX-N9XX-EVK
schematic
JP22 1x2 pin header MCU-Link debug probe target selection jumper:
• Open (default setting): The MCU-Link debug probe
or an external debug probe can be connected to the
onboard target MCU. Use this setting when the target
MCU operates in Normal mode (its SWD interface is
enabled).
• Shorted: The MCU-Link debug probe can be connected to
an external target MCU. Use this setting when using the
MCU-Link debug probe for debugging an external target
MCU.
Section 3.3
JP23 1x2 pin header • Open (default setting): To disable external pull-up
resistance on the I3C SDA
• Shorted: To enable external pull-up resistance on I3C SDA
Section 2.8
JP24 1x2 pin jumper MCU-Link (LPC55S69) force ISP mode jumper:
• Open (default setting): MCU-Link follows the normal
boot sequence (MCU-Link boots from internal flash if a
boot image is found). With the internal flash erased, the
MCU-Link normal boot sequence falls through to ISP boot
mode.
• Shorted: MCU-Link is forced to ISP mode (USB). Use this
setting to reprogram the MCU-Link internal flash with a
new image or use the MCUXpresso IDE with the CMSIS-
DAP protocol.
Note: By default, MCU-Link flash is preprogrammed with a
version of CMSIS-DAP firmware.
Installing device
drivers and updating
MCU-Link firmware
JP25 1x2 pin header USB-to-I2C bridge enable/disable jumper
• Open: The USB-to-I2C bridge between MCU-Link and the
target MCU is disabled
• Shorted (default setting): MCU-Link is connected to the
target MCU through a USB-to-I2C bridge
Section 3.9
JP26 1x2 pin header Pin 1-2 shorted (default setting): VDD_BRD is sourced
from MCU_PWR_SRC supply
For more information
on this jumper, see
MCX-N9XX-EVK
schematic
JP27 2x3 pin header • Pin 1-2 shorted (default setting): VDD_DCDC is sourced
from the MCU_PWR power supply
• Pin 3-4 shorted: VDD_DCDC is pulled down to GND
Section 2.1.1
Table 3. MCX-N9XX-EVK jumpers...continued
UM12036 All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved.
User manual Rev. 1 — 20 January 2024
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