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

TRACE

The AM261x controlSOM has up to 16-bit TRACE debug capability. To enable TRACE on the MIPI-60 header (J5), the following resistor modifications must be made. Table 2-12 details what resistors must be removed and populated to enable the correct paths on the EVM.

Table 2-12 AM261-SOM-EVM Resistor Modifications for Trace Debug
Designator Value (Ω) Action AM261x Signal Disabled Trace Signal Enabled
R149 0 REMOVE PR0_PRU1_GPIO0
R150 0 REMOVE PR0_PRU1_GPIO1
R151 0 REMOVE PR0_PRU1_GPIO2
R152 0 REMOVE PR0_PRU1_GPIO3
R153 0 REMOVE PR0_PRU1_GPIO4
R154 0 REMOVE PR0_PRU1_GPIO5
R155 0 REMOVE PR0_PRU1_GPIO6
R156 0 REMOVE PR0_PRU1_GPIO8
R159 0 REMOVE PR0_PRU1_GPIO9
R161 0 REMOVE PR0_PRU1_GPIO10
R163 0 REMOVE PR0_PRU1_GPIO11
R164 0 REMOVE PR0_PRU1_GPIO12
R167 0 REMOVE PR0_PRU1_GPIO13
R169 0 REMOVE PR0_PRU1_GPIO14
R170 0 REMOVE PR0_PRU1_GPIO15
R171 0 REMOVE PR0_PRU1_GPIO16
R172 0 REMOVE GPIO120
R173 0 REMOVE GPIO119
R86 10 POPULATE TRC_DATA6
R87 10 POPULATE TRC_DATA7
R88 10 POPULATE TRC_DATA8
R89 10 POPULATE TRC_DATA9
R90 10 POPULATE TRC_DATA10
R91 10 POPULATE TRC_DATA11
R92 10 POPULATE TRC_DATA12
R93 10 POPULATE TRC_CLK
R94 10 POPULATE TRC_DATA13
R95 10 POPULATE TRC_DATA14
R96 0 POPULATE TRC_CTL
R97 10 POPULATE TRC_DATA15
R98 10 POPULATE TRC_DATA0
R99 10 POPULATE TRC_DATA1
R100 10 POPULATE TRC_DATA2
R101 10 POPULATE TRC_DATA3
R102 10 POPULATE TRC_DATA4
R103 10 POPULATE TRC_DATA5

Figure 2-20 shows the resistors that are to be removed. Figure 2-21 shows the resistors to populate.

AM261-SOM-EVM Resistors to Remove to enable
                    TRACE Figure 2-20 Resistors to Remove to enable TRACE
AM261-SOM-EVM Resistors to Populate to
                    enable TRACE Figure 2-21 Resistors to Populate to enable TRACE