Application-specific requirements tend
to be more lenient then the ROM code execution requirements as improper
configuration and lack of support won’t result in system boot failure. The following
requirements must be met for general flash applications:
- Flash device must operate in
the 3.3 V vicinity (typical range 2.3 V to 3.6 V).
- If the Flash memory is larger
than 16MB (128Mb), then a flash device package with support for a RESET
signal is required to prevent a device warm reset from affecting ROM code
execution.
Note: Even though there is not a
hard limit imposed on the Flash memory that can be used, AM263x only supports up
to 4-byte addressing communication mode. As a result, any address requiring over
32 bits to reach is virtually inaccessible.