SPRUJ85 April   2024

ADVANCE INFORMATION  

  1.   1
  2.   Description
  3.   Key Features
  4. 1LaunchPad Module Overview
    1. 2.1 Introduction
    2. 2.2 Preface: Read This First
      1. 2.2.1 If You Need Assistance
      2. 2.2.2 Important Usage Notes
    3. 2.3 Kit Contents
    4. 2.4 Device Information
      1. 2.4.1 System Architecture Overview
      2. 2.4.2 Security
      3. 2.4.3 Compliance
      4. 2.4.4 BoosterPacks
      5. 2.4.5 Component Identification
  5. 2Hardware Description
    1. 3.1  Board Setup
      1. 3.1.1 Power Requirements
        1. 3.1.1.1 Power Input Using USB Type-C Connector
        2. 3.1.1.2 Power Status LEDs
        3. 3.1.1.3 Power Tree
      2. 3.1.2 Push Buttons
      3. 3.1.3 Boot mode Selection
      4. 3.1.4 IO Expander
    2. 3.2  Functional Block Diagram
    3. 3.3  GPIO Mapping
    4. 3.4  Reset
    5. 3.5  Clock
    6. 3.6  Memory Interface
      1. 3.6.1 OSPI
      2. 3.6.2 Board ID EEPROM
    7. 3.7  Ethernet Interface
      1. 3.7.1 Ethernet PHY #1 - CPSW RGMII/ICSSM
      2. 3.7.2 Ethernet PHY #2 - CPSW RGMII/ICSSM
      3. 3.7.3 LED Indication in RJ45 Connector
    8. 3.8  I2C
    9. 3.9  Industrial Application LEDs
    10. 3.10 SPI
    11. 3.11 UART
    12. 3.12 MCAN
    13. 3.13 FSI
    14. 3.14 JTAG
    15. 3.15 TIVA and Test Automation Header
    16. 3.16 LIN
    17. 3.17 MMC
    18. 3.18 ADC and DAC
    19. 3.19 EQEP and SDFM
    20. 3.20 EPWM
    21. 3.21 BoosterPack Headers
    22. 3.22 Pinmux Mapping
  6. 3Additional Information
    1.     Trademarks
    2. 4.1 Sitara MCU+ Academy
  7. 4References
    1. 5.1 Reference Documents
    2. 5.2 Other TI Components Used in This Design
  8. 5Revision History

2.8 I2C

The AM263Px LaunchPad uses two AM263Px SoC inter-integrated circuit (I2C) ports to operate as a controller for various targets. I2C data and clock lines needs to be pulled up to the 3.3V system voltage supply to enable communication.

GUID-20240423-SS0I-QDFS-QXMJ-ZRQ2KZ9PMGFJ-low.png Figure 2-17 I2C Targets
Table 2-14 I2C Addressing
TargetI2C InstanceI2C Addres Bit DescriptionDevice AddressingLaunchPad Config.I2C Address
Board ID EEPROMI2C1The first 4 bits of the device address are set to 1010, the next two are set by the A2 and A1 pins, the seventh bit, a16, is the most significant internal address bit0b10110[A2][A1][a16]
A1 is connected to 3.3V supply
A2 is connected to ground		0b10100100x52
LED DriverI2C1The first four bits of the target address are 1100, the following three are determined by A2, A1, and A00b1100[A2][A1][A0]
A2/A1 are connected to ground
A0 is connected to 3.3V supply		0b11000010x61
BoosterPack HeadersI2C1,

I2C3

Dependent on target
Boot mode IO ExpanderI2C1The first 6 bits of the target address are set to 010000, the next bit is determined by the addr pin of the IO expanderIO_ADDR pin connected to 3.3V supply0b01000010x21

IO Expander

I2C1The first 6 bits of the target address are set to 010000, the next bit is determined by the addr pin of the IO expanderIO_ADDR pin connected to 3.3V supply0b01000010x20
Note: Underlined address bits are fixed based on the device addressing and cannot be configured.