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

2.11.5 SPI

The AM263Px Control Card maps two SPI instances (SPI0,SPI1) from the AM263Px SoC to the HSEC 180 pin connector. Series termination resistors are placed near the SoC for each SPI clock signal.

There is 4-channel FET Switch that routes SPI1 between the PMIC and the HSEC Connector. This FET Switch has the select line driven by SPI1_MUX_SEL of the IO Expander. Additionally, there is an external pull-down resistor on the Select line such that the PMIC routing for the SPI signals is the default state.

GUID-4559947A-1AD2-441F-ABDA-67458D388E2B-low.png Figure 2-25 SPI