NXP Semiconductors UM12012FRDM-MCXA153 Board User Manual3 MCU-Link OB debug probeMCU-Link is a debug probe architecture jointly developed by NXP and Embedded Artists. The MCU-Linkarchitecture is based on the LPC55S69 MCU, which is based on the Arm Cortex-M33 core.The MCU-Link architecture is configurable to support different debug feature options. The architecture is usedboth in standalone debug probes (such as MCU-Link Pro) and for onboard debug probes in evaluation boards(such as FRDM-MCXA153). The onboard implementation of MCU-Link is referred to as MCU-Link OB.The FRDM-MCXA153 board implements a subset of the MCU-Link architecture features, as mentioned inSection 3.1. For more details on the MCU-Link architecture, visit the MCU-Link Debug Probe Architecture page.The MCU-Link OB on the FRDM-MCXA153 board is factory-programmed with the firmware based on the NXPCMSIS-DAP protocol. The firmware also supports all other features supported in the hardware. A customversion of the J-Link firmware to make MCU-Link OB compatible with J-Link LITE is also available. However,this firmware version supports only limited features, including debug/SWO and VCOM. For information on howto update the firmware, see Section 3.4.3.1 Supported MCU-Link featuresMCU-Link includes several mandatory and optional features. Table 15 summarizes the MCU-Link featuressupported on the FRDM-MCXA153 board.Feature DescriptionSerial wire debug (SWD) / serial wire debugtrace output (SWO)MCU-Link allows SWD-based debugging with SWO for profiling and/orlow overhead debug standard I/O communication.Virtual communication (VCOM) serial port MCU-Link adds a serial COM port on the host computer and connects itto the target MCU while working as a USB-to-UART bridge.External debug probe support The MCU-Link interface supports debugging the target MCU (MCXA1xx)using an external debug probe, instead of MCU-Link. Support for anexternal debug probe is enabled by disabling the SWD feature.External target support[1] MCU-Link can also be used to debug an external target.Table 15. Supported MCU-Link features[1] J-Link firmware does not support this feature.3.2 Supported debug scenariosTable 16 describes the debug scenarios supported on the FRDM-MCXA153 board.Debug scenario Feature support Required jumper/connector settingsMCU-Link SWD disable jumper JP20 is open.SWD: EnabledTarget MCU external debugger connector J18 (DNP) is notused for external connection.Use MCU-Link for debugging theMCXA1xx MCUVCOM: Enabled MCU-Link VCOM port disable jumper JP19 is open.Short JP20.SWD: Not supportedPopulate J18 and connect the external debugger to it.Use an external debugger fordebugging the MCXA1xx MCUVCOM: Supported JP19 is open.Table 16. Supported debug scenariosUM12012 All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved.User manual Rev. 1 — 25 January 202419 / 29