SPRUJ93 august   2023

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1.     Preface: Read This First
      1. 1.1.1 Sitara™ MCU+ Academy
      2. 1.1.2 If You Need Assistance
      3. 1.1.3 Important Usage Notes
    2. 1.1 Introduction
    3. 1.2 Kit Contents
    4. 1.3 Specification
    5. 1.4 Device Information
    6. 1.5 HSEC 180-pin Control Card Docking Station
    7. 1.6 Security
  6. 2Hardware
    1. 2.1  Functional Block Diagram
    2. 2.2  Component Identification
    3. 2.3  Power Requirements
      1. 2.3.1 Power Input Using USB Type-C Connector
      2. 2.3.2 Power Status LEDs
      3. 2.3.3 Power Tree
      4. 2.3.4 Power Sequence
      5. 2.3.5 PMIC
    4. 2.4  Reset
    5. 2.5  Clock
    6. 2.6  Boot Mode Selection
    7. 2.7  JTAG Path Selection
    8. 2.8  Header Information
    9. 2.9  GPIO Mapping
    10. 2.10 Push Buttons
    11. 2.11 Test Points
    12. 2.12 Interfaces
      1. 2.12.1  Memory Interface
        1. 2.12.1.1 QSPI
        2. 2.12.1.2 Board ID EEPROM
      2. 2.12.2  Ethernet Interface
        1. 2.12.2.1 RGMII
        2. 2.12.2.2 PRU-ICSS
        3. 2.12.2.3 LED Indication in RJ45 Connector
      3. 2.12.3  I2C
      4. 2.12.4  Industrial Application LEDs
      5. 2.12.5  SPI
      6. 2.12.6  UART
      7. 2.12.7  MCAN
      8. 2.12.8  FSI
      9. 2.12.9  JTAG
      10. 2.12.10 Test Automation Header
      11. 2.12.11 LIN
      12. 2.12.12 MMC
      13. 2.12.13 ADC and DAC
    13. 2.13 HSEC Pinout and Pinmux Mapping
  7. 3Software
    1. 3.1 SDK Installation
  8. 4Hardware Design Files
  9. 5Additional Information
    1. 5.1 Trademarks
    2. 5.2 E1 Design Hardware Modifications
  10. 6References
    1. 6.1 Reference Documents
    2. 6.2 Other TI Components Used in This Design

2.12.3 I2C

The AM263x Control Card uses three AM263x SoC inter-integrated circuit (I2C) ports to operate as a controller for various targets. TI recommends that all I2C data and clock lines are pulled up to the 3.3V IO voltage supply to enable communication.

GUID-20230515-SS0I-F7SK-PFCQ-Q8HBKTFLWLVS-low.png Figure 2-23 I2C Instances Tree
Table 2-22 I2C Addressing
Target I2C Instance I2C Address Bit Description Device Configuration CC Config. I2C Address
Board ID EEPROM I2C0 The 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 bit 0b10110[A2][A1][a16]
A1/A2 are connected to ground		 0b1010000 0x50
GPIO Expander I2C2 The first 6 bits of the target address are set to 010000, the next bit is determined by the addr pin of the IO expander 0b010000[ADDR]
ADDR pin connected to ground		 0b0100000 0x20
BOOTMODE IO Expander I2C2/I2C1_TA The first 6 bits of the target address are set to 010000, the next bit is determined by the addr pin of the IO expander 0b010000[ADDR]
ADDR pin connected to 3.3V IO supply		 0b0100001 0x21
Current Monitor I2C2 The first three bits of the target address are 100, the following four bits are determined by what is hooked up to A1 and A0 Refer to Address pin table from Device Data Sheet. 0b1000000 0x40
Current Monitor I2C2 The first three bits of the target address are 100, the following four bits are determined by what is hooked up to A1 and A0 Refer to Address pin table from Device Data Sheet. 0b1000001 0x41
Temperature Sensor I2C2 Fixed value of 1001100 for part number TMP411Ax N/A 0b1001100 0x4C
LED Driver I2C2 The first four bits of the target address are 1100, the following three are determined by A2, A1, and A0 0b1100[A2][A1][A0]
A2/A1/A0 all connected to ground		 0b1100000 0x60
Note: Underlined address bits are fixed based on the device addressing and cannot be configured.