SPRUJ09D March   2022  – September 2023 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Preface: Read This First
    1. 2.1 Sitara MCU+ Academy
    2. 2.2 If You Need Assistance
    3. 2.3 Important Usage Notes
  5. 2Control Card Overview
    1. 3.1 Kit Contents
    2. 3.2 Key Features
    3. 3.3 Component Identification
    4. 3.4 HSEC 180-pin Control Card Docking Station
    5. 3.5 Compliance
  6. 3Board Setup
    1. 4.1 Power Requirements
      1. 4.1.1 Power Input Using USB Type-C Connector
      2. 4.1.2 Power Status LEDs
      3. 4.1.3 Power Tree
      4. 4.1.4 Power Sequence
    2. 4.2 Push Buttons
    3. 4.3 Boot Mode Selection
    4. 4.4 JTAG Path Selection
  7. 4Hardware Description
    1. 5.1  Functional Block Diagram
    2. 5.2  GPIO Mapping
    3. 5.3  Reset
    4. 5.4  Clock
    5. 5.5  Memory Interface
      1. 5.5.1 QSPI
      2. 5.5.2 Board ID EEPROM
    6. 5.6  Ethernet Interface
      1. 5.6.1 RGMII
      2. 5.6.2 PRU-ICSS
      3. 5.6.3 LED Indication in RJ45 Connector
    7. 5.7  I2C
    8. 5.8  Industrial Application LEDs
    9. 5.9  SPI
    10. 5.10 UART
    11. 5.11 MCAN
    12. 5.12 FSI
    13. 5.13 JTAG
    14. 5.14 Test Automation Header
    15. 5.15 LIN
    16. 5.16 MMC
    17. 5.17 ADC and DAC
    18. 5.18 HSEC Pinout and Pinmux Mapping
  8. 5References
    1. 6.1 References
    2. 6.2 Other TI Components Used in This Design
  9.   Revision History
  10.   A E2 Design Changes
  11.   B E1 HSEC Pinout Table

4.7 I2C

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

GUID-20220426-SS0I-J7DP-LPBG-VDKFXLMZTMHP-low.png Figure 4-14 I2C Instances Tree
Table 4-12 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-Specific Datasheet. 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-Specific Datasheet. 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.