SPRUJ10D May   2022  – September 2023

 

  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. 2Kit Overview
    1. 3.1 Kit Contents
    2. 3.2 Key Features
    3. 3.3 Component Identification
    4. 3.4 BoosterPacks
    5. 3.5 Compliance
    6. 3.6 Security
  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
    2. 4.2 Push Buttons
    3. 4.3 Boot Mode 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 Ethernet PHY #1 - CPSW RGMII/ICSSM
      2. 5.6.2 Ethernet PHY #2 - CPSW RGMII/ICSSM
      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 EQEP and SDFM
    19. 5.19 EPWM
    20. 5.20 BoosterPack Headers
    21. 5.21 Pinmux Mapping
  8. 5References
    1. 6.1 Reference Documents
    2. 6.2 Other TI Components Used in This Design
  9. 6Revision History

4.9 SPI

The AM263x LauncPad maps two SPI instances (SPI0,SPI1) from the AM263x SoC to the BoosterPack Headers. Series termination resistors are placed near the SoC for each SPI clock and SPI D0 signal. There is a 2:1 Mux (SN74CB3Q3257PWR) that is responsible for selecting SPI signals for proper function. The Mux is driven by two GPIO signals that are generated from the AM263x SoC.

Table 4-9 SPI MUX
Output Enable (OE) Select (S) Input/Output Function
Low Low A ↔ B1 A port = B1 port
Low High A ↔ B2 A port = B2 port
High X Hi-Z Disconnect

GUID-20220502-SS0I-HQGJ-525Z-Z3LZLKVCKNZJ-low.png Figure 4-12 SoC SPI Interface to BoosterPack