SPRUJ86A October   2023  – January 2024 AM263P4

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
      1.      Preface: Read This First
        1. 1.1.1.1 Sitara MCU+ Academy
        2. 1.1.1.2 Important Usage Notes
    2. 1.2 Kit Contents
    3. 1.3 Device Information
      1. 1.3.1 HSEC 180-pin Control Card Docking Station
      2. 1.3.2 Security
  6. 2Hardware
    1. 2.1  Component Identification
    2. 2.2  Power Requirements
      1. 2.2.1 Power Input Using USB Type-C Connector
      2. 2.2.2 Power Status LEDs
      3. 2.2.3 Power Tree
      4. 2.2.4 Power Sequence
      5. 2.2.5 PMIC
    3. 2.3  Functional Block Diagram
    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 Interfaces
      1. 2.11.1  Memory Interface
        1. 2.11.1.1 OSPI/QSPI
        2. 2.11.1.2 Board ID EEPROM
      2. 2.11.2  Ethernet Interface
        1. 2.11.2.1 Control Card Ethernet Routing
        2. 2.11.2.2 On Board Ethernet PHY
        3. 2.11.2.3 LED Indication in RJ45 Connector
      3. 2.11.3  I2C
      4. 2.11.4  Industrial Application LEDs
      5. 2.11.5  SPI
      6. 2.11.6  UART
      7. 2.11.7  MCAN
      8. 2.11.8  FSI
      9. 2.11.9  JTAG
      10. 2.11.10 Test Automation Header
      11. 2.11.11 LIN
      12. 2.11.12 MMC
      13. 2.11.13 ADC and DAC
    12. 2.12 HSEC Pinout and Pinmux Mapping
  7. 3Hardware Design Files
  8. 4Additional Information
    1. 4.1 If You Need Assistance
    2. 4.2 Trademarks
  9. 5Related Documentation
    1. 5.1 Supplemental Content
      1.      5.1.A E1 Board Modifications
      2.      5.1.B E2 Design Changes
  10. 6References
    1. 6.1 Reference Documents
    2. 6.2 Other TI Components Used in This Design
  11. 7Revision History

2.11.1.2 Board ID EEPROM

The AM263Px Control Card has a I2C based 1Mbit EEPROM (CAT23M01WI-GT3) to store board configuration details. The Board ID EEPROM is connected to the I2C0 interface of the AM263Px via a 1:2 Mux (SN74CB3Q3257PWR). The default I2C address of the EEPROM is set to 0x50 by pulling down the address pins A1 and A2 to ground. The Write Protect pin for the EEPROM is by default pulled down to ground and therefore Write Protect is disabled. There is also the option to enable write protect by removing the 10 KΩ pull down resistor (R273) and mounting a pull up resistor (R268) to the 3.3 V IO voltage supply.

GUID-FB4776B7-EE9D-49F0-9667-0DA3980C4421-low.png Figure 2-19 Board ID EEPROM

The GPIO Expander is used to control the select signal (I2C0_MUX_SEL) of the 1:2 Mux.

Table 2-15 EEPROM Mux Table
Select Condition Mux Function
HIGH HSEC EQEP Selected A→B2 port
LOW I2C0 Selected A→B1 port