SDAA194 November   2025 AM2431 , AM2432 , AM2434 , AM62P , AM6412 , AM6421 , AM6422 , AM6441 , AM6442

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 SysConfig CodeGen Tool
  5. 2Getting Started Guide
    1. 2.1 How to Launch SysConfig (GUI and Command-Line)
    2. 2.2 Integration with CCS and Makefile builds
    3. 2.3 Location of SysConfig file in MCU SDK
      1. 2.3.1 Using Existing SysConfig File
      2. 2.3.2 Creating New SysConfig File
  6. 3Example Sysconfig in CCS
    1. 3.1 Example I2C Read
  7. 4Common Application Configuration
    1. 4.1 RAT Configuration
    2. 4.2 MPU Configuration
    3. 4.3 MMU Configuration
    4. 4.4 System Initialization
      1. 4.4.1 DPL Initialization
      2. 4.4.2 Clock Initialization
      3. 4.4.3 PinMux Configuration
      4. 4.4.4 Driver Initialization
      5. 4.4.5 Board Peripheral Initialization
  8. 5Output File
    1. 5.1 Files Generated by CodeGen Tool
      1. 5.1.1 Debugging and Troubleshooting
    2. 5.2 Version Mismatch
    3. 5.3 Resource Conflict
      1. 5.3.1 Pin Conflict
      2. 5.3.2 Module Instance Conflict
      3. 5.3.3 Multicore Resource Conflict
    4. 5.4 Unsupported Drivers
    5. 5.5 Use of Reserve Peripheral
  9. 6Disclaimers and Intended Use
  10. 7Summary
  11. 8References

4.4.3 PinMux Configuration

The AM243x and AM6x family of devices share limited pins across multiple peripherals (UART, SPI, I2C, GPIO, etc.). Pin multiplexing (PinMux) selects which peripheral is connected to which physical ball and pin. Without correct PinMux setup, a peripheral cannot communicate with external devices. Conflicting assignments (for example, UART and I2C sharing the same pin) cause boot or runtime failures. All these conflicts can easily be avoided by using the CodeGen tool.

When a module and peripheral is added in the CodeGen tool, the pins required for the modules are exposed by the Sysconfig tool and corresponding code is generated. The user can also select the pin settings to be input enabled/disabled or can configure the pin to have pull up or down using the tool.

There are separate structures or sets of pins configured for MCU and MAIN domain peripherals.

Figure 4-7 shows the Pinmux Initialization generated code.

PinMux Initialization Figure 4-7 PinMux Initialization