TIDUFE6A September   2025  – December 2025

 

  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Key System Specifications
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
      1. 2.2.1 Control Pilot
        1. 2.2.1.1 Signals
        2. 2.2.1.2 Duty Cycle
        3. 2.2.1.3 Signal State
        4. 2.2.1.4 Control Pilot Signal Circuit
        5. 2.2.1.5 EV Simulation Circuit
      2. 2.2.2 HomePlug Green PHY - Powerline Communication
        1. 2.2.2.1 HomePlug Green PHY Circuit
      3. 2.2.3 Proximity Pilot
        1. 2.2.3.1 Type 1 and NACS
        2. 2.2.3.2 Type 2
        3. 2.2.3.3 Proximity Detection Circuit
      4. 2.2.4 GB/T – ChaoJi
        1. 2.2.4.1 Signals
        2. 2.2.4.2 GB/T
        3. 2.2.4.3 ChaoJi
        4. 2.2.4.4 Schematics
        5. 2.2.4.5 EV Simulation
      5. 2.2.5 CHAdeMO
        1. 2.2.5.1 Signals
        2. 2.2.5.2 Standard
        3. 2.2.5.3 Schematics
          1. 2.2.5.3.1 High-Side Switch (CS1)
          2. 2.2.5.3.2 Low-Side Switch (CS2)
          3. 2.2.5.3.3 Proximity Detection
          4. 2.2.5.3.4 Vehicle Charge Permission
        4. 2.2.5.4 EV Simulation
      6. 2.2.6 Pluck Lock
        1. 2.2.6.1 Signals
        2. 2.2.6.2 Schematics
        3. 2.2.6.3 Motor Driver
        4. 2.2.6.4 Solenoid Driver
      7. 2.2.7 Temperature Sensing
        1. 2.2.7.1 Signals
        2. 2.2.7.2 Schematics
        3. 2.2.7.3 Calculation
      8. 2.2.8 Connectivity
        1. 2.2.8.1 RS-485
        2. 2.2.8.2 RS-232
        3. 2.2.8.3 CAN
      9. 2.2.9 General Purpose Input/Output
        1. 2.2.9.1 Digital Input
        2. 2.2.9.2 Analog Input
        3. 2.2.9.3 Digital Output
    3. 2.3 Highlighted Products
      1. 2.3.1 MSPM0G3507
      2. 2.3.2 AM62L
  9. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Required Hardware and Software
    2. 3.2 Test Setup
      1. 3.2.1 Power Supply Options
      2. 3.2.2 XDS110 Debug Probe
        1. 3.2.2.1 Application (or Back Channel) UART
        2. 3.2.2.2 Using an External Debug Probe Instead of the Onboard XDS110
      3. 3.2.3 Connecting to the AM62L-EVM
      4. 3.2.4 Connector, Pin Header, and Jumper Settings
    3. 3.3 Test Results
      1. 3.3.1 Control Pilot
        1. 3.3.1.1 TLV1805 Output Rise and Fall Time
        2. 3.3.1.2 Control Pilot Signal Voltage Accuracy in Different States
      2. 3.3.2 GB/T ChaoJi
        1. 3.3.2.1 GB/T Signal Voltage Accuracy
        2. 3.3.2.2 ChaoJi Signal Voltage Accuracy in Different States
      3. 3.3.3 Digital and Analog Input
        1. 3.3.3.1 Digital In
        2. 3.3.3.2 Analog In
  10. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  11. 5About the Author
  12. 6Revision History

3.2.2.1 Application (or Back Channel) UART

The back-channel UART allows communication with the USB host that is not part of the main functionality of the target application. This is very useful during development and also provides a communication channel to the PC host side.

The back-channel UART is the UART on UART1 (PA8, PA9) on the MSPM0. On the host side, a virtual COM port for the application back-channel UART is generated when the TIDA-010939 enumerates on the host. Use any PC application that interfaces with COM ports, including terminal applications like Hyperterminal® or Docklight, to open this port and communicate with the target application. Identify the COM port for the back channel. On Microsoft® Windows® PCs, use the Device Manager to find the COM ports.

TIDA-010939 Application Back-Channel UART in Device Manager Figure 3-2 Application Back-Channel UART in Device Manager

The back-channel UART is the XDS110 Class Application/User UART port. In this case, Figure 3-2 shows COM14, but this port can vary from one host PC to the next. After identifying the correct COM port, configure in the host application according to the documentation. The user can then open the port and begin communication from the host.

On the target MSPM0G3507 side, the back channel is connected to the UART1 module. The XDS110 has a configurable baud rate; therefore, it is important that the PC application configuring the baud rate is the same as what is configured on the UART1.