SPRUJ10E May   2022  – May 2025

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Preface: Read This First
    1. 2.1 Sitara MCU+ Academy
    2. 2.2 If You Need Assistance
    3. 2.3 Important Usage Notes
  6. 2Kit Overview
    1. 3.1 Introduction
    2. 3.2 Kit Contents
    3. 3.3 Specification
      1. 3.3.1 Key Features
      2. 3.3.2 Component Identification
      3. 3.3.3 Functional Block Diagram
    4. 3.4 Device Information
    5. 3.5 BoosterPacks
    6. 3.6 Compliance
    7. 3.7 Security
  7. 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
  8. 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
  9. 5EVM Revision Design Changes
    1. 6.1 Rev A Design Changes
  10. 6Hardware Design Files
  11. 7References
    1. 8.1 Reference Documents
    2. 8.2 Other TI Components Used in This Design
  12.   Trademarks
  13. 8Revision History

4.16 MMC

The AM263x LaunchPad provides a micro SD card interface that is mapped to the MMC0 instance of the AM263x SoC.

Micro SD Card Connector Figure 4-19 Micro SD Card Connector

A load switch (TPS22918DBVR) is used to power the micro SD card connector. The load switch is driven by the output of a 2-input AND gate between WARMRESETn and the SD Card enable GPIO (GPIO122) in order to power cycle the card upon reset. The load switch uses quick output discharge (QOD) to ensure that the supply voltage reaches <10% of nominal value during reset.

Inline ESD protection is provided for the MMC signals in the form of a six channel transient voltage suppressor device (TPD6E001RSER) and two channel transient voltage suppressor device (TPD2E001DRLR).

The Write Protect (WP) and Card Detect (CD) signals of the SD card connector are pulled up to the 3.3V System voltage supply.

A series termination resistor is provided for all MMC signals besides CD.