SPRUJ63C September   2022  – February 2026

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Device Information
    4. 1.4 EVM Revisions and Assembly Variants
    5. 1.5 Specification
    6. 1.6 Functional Block Diagram
  7. 2Hardware
    1. 2.1 Additional Images
    2. 2.2 Power
      1. 2.2.1 Power-On/Off Procedures
      2. 2.2.2 Power-On Procedure
      3. 2.2.3 Power-Off Procedure
      4.      19
      5. 2.2.4 Power Input
      6. 2.2.5 Reverse Polarity Protection
      7. 2.2.6 Current Monitoring
      8. 2.2.7 Power Supply
      9. 2.2.8 Power Sequencing
      10. 2.2.9 AM64x/AM243x Power
    3. 2.3 Peripheral and Major Component Description
      1. 2.3.1  Configuration
        1. 2.3.1.1 Boot Modes
      2. 2.3.2  Clocking
        1. 2.3.2.1 Ethernet PHY Clock
        2. 2.3.2.2 AM64x/AM243x Clock
        3. 2.3.2.3 PCIe Clock
      3. 2.3.3  Reset
      4. 2.3.4  JTAG
      5. 2.3.5  Test Automation
      6. 2.3.6  UART Interfaces
      7. 2.3.7  Memory Interfaces
        1. 2.3.7.1 DDR4 Interface
        2. 2.3.7.2 MMC Interfaces
          1. 2.3.7.2.1 Micro SD Interface
          2. 2.3.7.2.2 eMMC Interface
        3. 2.3.7.3 OSPI Interface
        4. 2.3.7.4 SPI EEPROM Interface
        5. 2.3.7.5 Board ID EEPROM Interface
      8. 2.3.8  Ethernet Interface
        1. 2.3.8.1 DP83867 PHY Default Configuration
        2. 2.3.8.2 DP83869 PHY Default Configuration
        3. 2.3.8.3 Ethernet LED
      9. 2.3.9  Display Interface
      10. 2.3.10 USB 2.0 Interface
      11. 2.3.11 PCIe Interface
      12. 2.3.12 High Speed Expansion Interface
      13. 2.3.13 CAN Interface
      14. 2.3.14 Interrupt
      15. 2.3.15 ADC Interface
      16. 2.3.16 Safety Connector
      17. 2.3.17 SPI Interfaces
      18. 2.3.18 I2C Interfaces
      19. 2.3.19 FSI Interface
  8. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  9. 4Compliance Information
    1. 4.1 EMC, EMI, and ESD Compliance
  10. 5Additional Information
    1. 5.1 Known Issues and Modifications
      1. 5.1.1 Issue 1 - Embedded XDS110 Connection to AM64x Target in CCS
      2. 5.1.2 Issue 2 - DC Barrel Jack Warning when Hot-Plugging
      3. 5.1.3 Issue 3 - uSD Card Boot Not Working
      4. 5.1.4 Issue 4 - Damage LM5140 after Hot Plug DC Jack
      5. 5.1.5 Issue 5 - CPTS0 PTP Jitter Issue
    2.     Trademarks
  11. 6Related Documentation
  12. 7References
  13. 8Revision History

2.3.18 I2C Interfaces

There are five I2C interfaces used in the EVM board.

  1. MAIN_I2C0: This interface is used by the software to identify the EVM and to control the power supply circuit. MAIN_I2C0 is interfaced to detect the latch and to identify the daughter cards, which are presently installed. Board ID memory device, and board ID memories are of the daughter cards and HSE connector. This I2C is also connected to a test header J5 for AM64x/AM243x processor slave operation. Pin outs of I2C test header is given in Table 2-30.
    Table 2-30 I2C Test Header (J5) Pin-out
    Pin No. Signal
    1 DGND
    2 SoC_I2C0_SDA
    3 SoC_I2C0_SCL
  2. MAIN_I2C1: This is interfaced to 16 bit GPIO expanders that are being used for all control signals and LED controls, 8bit LED Driver with part number TPIC2810, Current Monitors with part number INA226 to monitor current of VDD_CORE, VDDAR_CORE, SoC_DVDD3V3, SoC_DVDD1V8, VDDA_1V8, VDD_DDR4, Temperature sensor with part number TMP100, Display Interface with part number OSD9616P0992-10, and Test automation connector via voltage isolation. This I2C is also connected to a test header J4 for AM64x processor slave operation. Pinouts of I2C test header are given in Table 2-31.
    Table 2-31 I2C Test Header (J4) Pin-out
    Pin No. Signal
    1 SoC_I2C1_SCL
    2 SoC_I2C0_SDA
    3 DGND
    4 INA_ALERT
    5 NC
  3. MAIN_I2C3: This is connected to the expansion board connector from a mux. I2C3 is muxed with the MCAN signals. The default state of the mux is MCAN.
  4. MCU_I2C0: This is connected to the safety connector.
  5. MCU_I2C1: This is connected to the safety connector.

Figure 2-31 depicts the I2C tree.

TMDS243EVM TMDS64EVM AM64x/AM243x I2C Interfaces and Address Assignment of PeripheralsFigure 2-31 AM64x/AM243x I2C Interfaces and Address Assignment of Peripherals