SPRUJ28E November 2021 – September 2024 AM68 , AM68A , TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
Only single data rate with backward compatible interface timing is supported.
See Section 4.3.10, MMCSD Boot Device Configuration and Section 4.4.8, MMCSD Boot Parameter Table for the available configuration options.
If the card type is set to autodetect, then an initial discovery phase is performed:
The ROM Code will start reading from the MMCSD memory boot sector, or filesystem, as specified by the BOOTMODE pins. It will continue reading data from the memory and storing it in internal RAM until a complete image has been read. When the complete image has been read and found in good integrity, the ROM Code will branch to the address defined in the Boot Info field of the boot header.