SLVUDF6 September   2025

 

  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 System Description
      1. 1.3.1 Key System Specifications
      2. 1.3.2 End Equipment
      3. 1.3.3 Electricity Meter
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 System Overview
      1. 2.1.1 Block Diagram
      2. 2.1.2 Design Considerations
        1. 2.1.2.1 Voltage Measurement - Analog Front End
        2. 2.1.2.2 Current Measurement - Analog Front End
        3. 2.1.2.3 Input Voltage
  9. 3Software
    1. 3.1 Metrology Overview
      1. 3.1.1 Metrology Formulas
      2. 3.1.2 UART for PC GUI Communication
      3. 3.1.3 Direct Memory Access (DMA)
      4. 3.1.4 ADC Setup
      5. 3.1.5 Foreground Process
      6. 3.1.6 Background Process
      7. 3.1.7 Software Function per_sample_dsp ()
      8. 3.1.8 Frequency Measurement and Cycle Tracking
      9. 3.1.9 LED Pulse Generation
  10. 4Implementation Results
    1. 4.1 Evaluation Procedure
      1. 4.1.1 Equipment Setup
      2. 4.1.2 Test Procedure
        1. 4.1.2.1 Working with the Metrology GUI
        2. 4.1.2.2 Calibration
          1. 4.1.2.2.1 Voltage and Current Offset Calibration
          2. 4.1.2.2.2 Voltage and Current Gain Calibration
          3. 4.1.2.2.3 Active Power Gain Calibration
          4. 4.1.2.2.4 Offset Calibration
          5. 4.1.2.2.5 Phase Calibration
    2. 4.2 Performance Data and Results
      1. 4.2.1 Electricity Meter Metrology Accuracy Results
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  12. 6Additional Information
    1. 6.1 Trademarks
  13. 7Compliance Information
    1. 7.1 Compliance and Certifications
  14. 8Related Documentation

3.1.3 Direct Memory Access (DMA)

The MCU DMA module transfers data packets between the MSPM0C1105 MCU and AMC130M02 devices with minimal hardware resources and timing overhead over the SPI bus. Two DMA channels are utilized for the SPI data transfer: DMA Channel 0 sends SPI data (0x00) to the ADC and DMA Channel 1 receives the measurements data from ADC over the SPI bus. AMC130M02 transfers 12 bytes packet due to 2 analog input, once a complete SPI data packet has been received from the ADC, an DMA Ready interrupt is generated and the CRC16 verification of the data packet starts. After the CRC16 check was successful, the data packet is disassembled into voltage and current values for Phase A.