SPRADQ5 March   2025 AM2612 , AM2612-Q1 , AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1 , AM263P2-Q1 , AM263P4 , AM263P4-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction of AC or Servo Drive Hot-Side Control Architecture
  5. 2PRU and FSI Implementation for Time Synchronization and Data Transmitting
    1. 2.1 Importance of Clock in Industrial Systems With MCUs
    2. 2.2 IEP Timer Interface
    3. 2.3 PRU_ICSSG Task Manger
    4. 2.4 Fast Serial Interface
    5. 2.5 Two-Chip System Scheme for Time Synchronization and Data Transmitting
      1. 2.5.1 Device 1 Configuration
        1. 2.5.1.1 Pad Configuration
        2. 2.5.1.2 Clock Source Configuration
        3. 2.5.1.3 IEP Timer Configuration
        4. 2.5.1.4 Task Manager Configuration
      2. 2.5.2 Device 2 Configuration
        1. 2.5.2.1 Pad Configuration
        2. 2.5.2.2 Clock Configuration
        3. 2.5.2.3 IEP Timer Configuration
        4. 2.5.2.4 TSR Configuration
        5. 2.5.2.5 Task Manager Configuration
  6. 3Verification
  7. 4Summary
  8. 5References

2.5.1.1 Pad Configuration

AM243x pins and pads can be configured for multiple functions using pin multiplexing. In this application note, a specific pin is selected to output sync signal from ICSSG0 IEP0. Set MUXMODE bit field = 0x2 in the PADCONFIG107 register (0x000F41AC) to route the pin with ball name PRG0_PRU0_GPO19 to the signal PRG0_IEP0_EDC_SYNC_OUT0. This pin serves as the SYNC signal, generated by the IEP. Device 2 uses this signal as a reference to adjust the IEP counter, establishing synchronization with device 1.