SPRUIF3B May   2017  – March 2019 DRA790 , DRA791 , DRA793 , DRA797

 

  1.   DRA79x EVM CPU board
    1.     Trademarks
    2. 1 Introduction
    3. 2 Overview
      1. 2.1 EVM System Configurations
      2. 2.2 CPU Board Feature List
      3. 2.3 CPU Board Component Identification
    4. 3 Hardware
      1. 3.1 Hardware Architecture
      2. 3.2 DRA71x, DRA79x, TDA2E-17, and AM570x Processor
      3. 3.3 Power Architecture
      4. 3.4 Reset Structure
      5. 3.5 Clocks
      6. 3.6 Memory
        1. 3.6.1  SDRAM Memory
        2. 3.6.2  QSPI Flash Memory
        3. 3.6.3  EMMC Flash Memory
        4. 3.6.4  MicroSD Card Cage
        5. 3.6.5  GPMC NOR Flash Memory
        6. 3.6.6  GPMC NAND Flash Memory
        7. 3.6.7  Boot Modes
        8. 3.6.8  JTAG/Emulator and Trace
        9. 3.6.9  UART Terminal
        10. 3.6.10 DCAN and CAN Interfaces
        11. 3.6.11 Universal Serial Bus (USB)
        12. 3.6.12 Wired Ethernet
        13. 3.6.13 Video Output
          1. 3.6.13.1 HDMI Display
          2. 3.6.13.2 LCD Touch Panel
          3. 3.6.13.3 FPD-Link III Output/Panel
        14. 3.6.14 Video Input
          1. 3.6.14.1 Parallel Imaging
          2. 3.6.14.2 Serial Imaging
        15. 3.6.15 Mini-PCIe
        16. 3.6.16 Media Local Bus (MLB)
        17. 3.6.17 Audio
        18. 3.6.18 COM8 Module Interface
        19. 3.6.19 eFuse Programming Supply
        20. 3.6.20 User Interface LEDs
        21. 3.6.21 Power Monitoring
        22. 3.6.22 I2C Peripheral Map
        23. 3.6.23 GPIO List
        24. 3.6.24 I/O Expander List
        25. 3.6.25 Configuration EEPROM
    5. 4 Signal Multiplex Logic
      1. 4.1 GPMC and QSPI Selection (MUX A)
      2. 4.2 GPMC, VIN1, and VOUT3 Selection (MUX B)
      3. 4.3 GPMC and EMMC Selection (MUX C)
      4. 4.4 VIN2A and EMU Selection (MUX D, MUX E)
      5. 4.5 VIN2A and RGMII1 Selection (MUX F)
      6. 4.6 RGMII0 and VIN1B Selection (MUX J)
      7. 4.7 SPI2 and UART3 Selection (MUX K)
      8. 4.8 DCAN2 and I2C3 Selection (MUX L)
    6. 5 USB3 Supported Configurations
      1. 5.1 Option 1
      2. 5.2 Option 2
      3. 5.3 Option 3
    7. 6 References
  2.   Revision History

3.6.4 MicroSD Card Cage

For nonvolatile storage expansion, the EVM includes a microSD card cage. The cage is connected to the MMC1 port of the SoC. To support higher-speed cards that operate at lower voltages, the I/O supplies are changed from 3v3 to 1v8 by setting GPIO7_11 to low. The SD card power can be cycled using I/O expander (EXP2 and PP5). See the data manual for the SoC for specific information regarding supported card types, densities, and speeds.

Booting from the microSD card cage is supported on the EVM. No EVM configuration is required as the QSPI flash is enabled by default. Ensure the correct SoC boot mode is set using the SYS_BOOT switches (SW3 and SW4).