SPRUJ09D March   2022  – September 2023 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1 , AM263P2-Q1 , AM263P4 , AM263P4-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

4.5.2 Board ID EEPROM

The AM263x 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 AM263x 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 10KΩ pull down resistor (R273) and mounting a pull up resistor (R268) to the 3.3 V IO voltage supply.

GUID-20220421-SS0I-4HVH-RM5M-TJW71SKQ42CW-low.png Figure 4-8 Board ID EEPROM

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

Table 4-3 EEPROM Mux Table
Select Condition Mux Function
HIGH HSEC EQEP Selected A→B2 port
LOW I2C0 Selected A→B1 port