SPRUJ12F August   2021  – January 2024 AM2431 , AM2432 , AM2434

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Preface: Read This First
    1. 1.1 If You Need Assistance
    2. 1.2 Important Usage Notes
  5. 2Kit Overview
    1. 2.1 Kit Contents
    2. 2.2 Key Features
    3. 2.3 Component Identification
    4. 2.4 BoosterPacks
    5. 2.5 Compliance
    6. 2.6 Security
  6. 3Board Setup
    1. 3.1 Power Requirements
      1. 3.1.1 Power Input Using USB Type-C Connector
      2. 3.1.2 Power Status LED's
      3. 3.1.3 Power Tree
      4. 3.1.4 Power Sequence
    2. 3.2 Push Buttons
    3. 3.3 Boot Mode Selection
  7. 4Hardware Description
    1. 4.1  Functional Block Diagram
    2. 4.2  BoosterPack Headers
      1. 4.2.1 Pinmux for BoosterPack
    3. 4.3  GPIO Mapping
    4. 4.4  Reset
    5. 4.5  Clock
    6. 4.6  Memory Interface
      1. 4.6.1 QSPI Interface
      2. 4.6.2 Board ID EEPROM
    7. 4.7  Ethernet Interface
      1. 4.7.1 Ethernet PHY Strapping
      2. 4.7.2 Ethernet PHY - Power, Clock, Reset, Interrupt
      3. 4.7.3 LED indication in Ethernet RJ45 Connector
    8. 4.8  USB 2.0 Interface
    9. 4.9  I2C Interface
    10. 4.10 Industrial Application LEDs
    11. 4.11 UART Interface
    12. 4.12 eQEP Interface
    13. 4.13 CAN Interface
    14. 4.14 FSI Interface
    15. 4.15 JTAG Emulation
    16. 4.16 Test Automation Interface
    17. 4.17 SPI Interface
  8. 5References
    1. 5.1 Reference Documents
    2. 5.2 Other TI Components Used in This Design
  9.   A E3 Design Changes
  10.   B Revision A Design Changes
  11.   Revision History

4.9 I2C Interface

The AM243x SoC supports two I2C interfaces that are used to connect BoosterPack headers, test automation header, LED driver for ethernet LEDs, and Board ID EEPROM to the LaunchPad.

  • SoC_I2C0 Interface: SoC_I2C0 is connected to each of the following:
    • I2C0 interface is used by the software to identify the LaunchPad through the Board ID memory device (AT24CM01-XHD-T) which is configured to respond to the address 0x50.
    • I2C0 on the LaunchPad is also used to control the 8 bit LED driver (TPIC2810) configured to respond to address 0x60 which is used to conrol the Industrial LEDs.
    • I2C0 is also connected to the BoosterPack (J5.9, J5.10) expansion connector.
  • SoC_I2C1 Interface: SoC_I2C1 is connected to each of the following:
    • Test automation header (687140183622 from Wurth)
    • I2C1 is also connected to the BoosterPack (J1.9, J1.10) expansion connector

GUID-20210719-CA0I-MPBF-WJHN-KZF4C6JTM1C7-low.png Figure 4-14 I2C Interface