SLAU928A May   2024  – September 2025 MSPM0L1227 , MSPM0L1227-Q1 , MSPM0L1228 , MSPM0L1228-Q1 , MSPM0L2227 , MSPM0L2227-Q1 , MSPM0L2228 , MSPM0L2228-Q1

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Hardware Overview
    2. 2.2 Power Requirements
    3. 2.3 XDS110 Debug Probe
      1. 2.3.1 Isolation Jumper Block
      2. 2.3.2 Application (Backchannel) UART
    4. 2.4 Measure Current Draw of the MSPM0L2228
    5. 2.5 Clocking
    6. 2.6 BoosterPack Plug-in Module Pinout
    7. 2.7 Liquid Crystal Display (LCD)
    8. 2.8 SuperCap
  9. 3Software
    1. 3.1 Software Development Options
    2. 3.2 CCS Cloud
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layers
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1. 5.1 Trademarks
  12. 6Related Documentation
    1. 6.1 Supplemental Content
  13. 7Revision History

2.3.1 Isolation Jumper Block

The isolation jumper block J101 allows the user to connect or disconnect signals that cross from the XDS110 domain into the MSPM0L2228 target domain. This includes XDFS110 SWD signals, application UART signals, 3.3V and 5.5V power, reset, and a VBAT source.

Table 2-2 Isolation Jumper Block
Jumper Description
5V 5V rail from the USB
3V3 3.3V rail from the LDO
RXD<< Backchannel UART: The target MSPM0L2228 receives data through this signal. The arrows indicate the direction of the signal.
TXD>> Backchannel UART: The target MSPM0L2228 sends data through this signal. The arrows indicate the direction of the signal.
NRST Reset signal
SWDIO Serial Wire Debug: SWDIO data signal.
SWCLK Serial wire debug: SWCLK clock signal.
BSL Invoke pin for bootstrap loader. Allows the XDS110 to invoke BSL.
VBAT VBAT connection between the LDO on the XDS110 side and the MSPM0L2228's VBAT pin.
CAP CAP connection to the SuperCap.

During normal prototyping most shunts are populated. However, there are some scenarios where a user needs to open these connections:

  • To remove any and all influence from the XDS110 debug probe for high accuracy target power measurements
  • To control 3.3V and 5V power flow between the XDS110 and target domains
  • To expose the target MCU pins for other use than onboard debugging and application UART communication.
  • To expose the programming and UART interface for the XDS110 so that the XDS110 can be used for devices other than the onboard MCU.
  • To utilize other VBAT options