SPRACI9A October   2018  – July 2021 AM6526 , AM6528 , AM6546 , AM6548

 

  1.   Trademarks
  2. 1Introduction
  3. 2Recommendations Specific to the AM65x/DRA80x
    1. 2.1  EVM versus Data Sheet
    2. 2.2  Power
    3. 2.3  Reset
    4. 2.4  Boot Modes
    5. 2.5  Unused Signals
    6. 2.6  Clocking
    7. 2.7  System Issues
    8. 2.8  Low Power Considerations
    9. 2.9  DDR
    10. 2.10 MMC
    11. 2.11 OSPI and QSPI
    12. 2.12 GPMC NAND
    13. 2.13 I2C
    14. 2.14 CPSW Ethernet
    15. 2.15 ICSSG
    16. 2.16 USB
    17. 2.17 SERDES - USB3
    18. 2.18 SERDES - PCIe
    19. 2.19 JTAG and EMU
  4. 3References
  5. 4Revision History

Boot Modes

  • Do all BOOTMODE and MCU_BOOTMODE pins have external pulling resistors or a circuit to drive the desired bootmode? BOOTMODE and MCU_BOOTMODE pins do not have internal pull-up or pull-down resistors that are active during power up and reset. External pulling resistors can be used to set the bootmode. Alternatively, a buffer that is only driven when reset is active can be used to present the bootmode.
  • Is the expected bootmode present on the BOOTMODE and MCU_BOOTMODE pins when PORz or MCU_PORz are active? If the bootmode pins are redefined for another purpose during operation, they must be released and set back to the proper levels to select the boot mode whenever the AM654x enters the cold reset state.