SPAU024 April   2025 AM2612

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
      1.      Preface: Read This First
        1. 1.1.1.1 Sitara MCU+ Academy
        2. 1.1.1.2 Important Usage Notes
    2. 1.2 Kit Contents
    3. 1.3 Specification
      1. 1.3.1 Component Identification
      2. 1.3.2 Functional Block Diagram
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1  Setup
      1. 2.1.1 Configuration 1: Standalone Configuration
      2. 2.1.2 Configuration 2: AM26x controlCARD Backward Compatibility Configuration
      3. 2.1.3 Configuration 3: Baseboard Configuration
    2. 2.2  Power Requirements
      1. 2.2.1 Power Tree
      2. 2.2.2 Power Sequence
      3. 2.2.3 Power Status LEDs
      4. 2.2.4 PMIC
    3. 2.3  Header Information
      1. 2.3.1 Baseboard Headers (J1, J2, J3)
      2. 2.3.2 XDS Debug Header (J4)
      3. 2.3.3 MIPI-60 Header (J5)
    4. 2.4  Push Buttons
    5. 2.5  Reset
    6. 2.6  Clock
    7. 2.7  Boot Mode Selection
    8. 2.8  GPIO Mapping
    9. 2.9  Interfaces
      1. 2.9.1 Memory Interface
        1. 2.9.1.1 OSPI
        2. 2.9.1.2 Board ID EEPROM
      2. 2.9.2 I2C
      3. 2.9.3 SPI
      4. 2.9.4 UART
      5. 2.9.5 JTAG
      6. 2.9.6 TRACE
      7. 2.9.7 ADC and DAC
      8. 2.9.8 Off-SOM Peripherals
        1. 2.9.8.1 MCAN
        2. 2.9.8.2 LIN
        3. 2.9.8.3 FSI
        4. 2.9.8.4 USB
        5. 2.9.8.5 Ethernet
          1. 2.9.8.5.1 RGMII
          2. 2.9.8.5.2 PRU-ICSS
    10. 2.10 Test Points
    11. 2.11 Best Practices
  8. 3Software
  9. 4Hardware Design Files
  10. 5Additional Information
    1. 5.1 Trademarks
  11. 6References

2.1.1 Configuration 1: Standalone Configuration

The standalone configuration can be used for most software development use cases that do not require the controlSOM to interface to other hardware. An XDS110 debug probe (XDS110ISO-EVM) is required for this configuration. Power is provided to the controlSOM through XDS110 debug-probe. The XDS110 debug probe is sold separately.

In this configuration, Code Composer Studio™ connects to the controlSOM by JTAG and enables software development. The XDS110 debug-probe also enumerates a virtual COM port (VCP) for communication with the MCU by UART.

Follow these steps to enable this configuration:

  1. Collect the required equipment:
    1. AM261x controlSOM (AM261-SOM-EVM)
    2. XDS110 isolated debug probe (XDS110ISO-EVM)
    3. USB Type-C® cable
  2. Verify that the switch settings are correct on each EVM.
    1. AM261-SOM-EVM:
      1. Use SW1 to select the desired boot mode (Section 2.7).
      2. Use S1, S2, S4 to select the desired ADC voltage reference mode (if applicable for the application) (Section 2.9.7).
    2. XDS110ISO-EVM: No switch configuration is necessary.
  3. Connect the XDS110ISO-EVM to connector J1 of the controlSOM.
  4. Connect the USB cable into connector J5 on the XDS110 isolated debug probe. The XDS110 isolated probe and the controlSOM are powered on.
  5. Verify the power status LEDs (D5, D6, D7) on the controlSOM are turned on
  6. The controlSOM is ready for use. Follow the steps in Section 3 to get started on developing software.
AM261-SOM-EVM AM261-SOM-EVM Standalone Configuration with XDS110ISO-EVM Figure 2-1 AM261-SOM-EVM Standalone Configuration with XDS110ISO-EVM

In the standalone configuration, the 12-pin prototype header (J2) on the XDS110ISO-EVM provides access to a few ADC and GPIO pins on the AM261x device. Table 2-1 lists the ADC and GPIO pins which can be accessed on this prototype header.

Table 2-1 XDS110ISO-EVM Prototype Header (J2) Pinout
MCU Signal SOM Standard Pin Pin SOM Standard MCU Signal
GND GND 12 11 GND GND
EPWM2_B, GPIO48 J1.5 10 9 J1.11 EPWM1_A, GPIO45
EPWM2_A / GPIO47 J1.7 8 7 J1.13 EPWM0_B, GPIO44
EPWM1_B, GPIO46 J1.9 6 5 J1.15 EPWM0_A, GPIO43
ADC0_AIN3 J1.118 4 3 J1.117 ADC0_AIN1
ADC0_AIN2 J1.120 2 1 J1.119 ADC0_AIN0, DAC_OUT