Bootloader Basic Transfer Procedure - Texas Instruments Concerto F28M36 Series Technical Reference Manual

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Read first word (W1)
W1=
0x10AA
16-bit data size
Read EntryPoint address
Read BlockSize (R)
R=0
Read BlockAddress
Transfer R words of
data from source to
destination
8-bit and 16-bit transfers are not valid for all boot modes. If only one mode is valid, then this decision tree is skipped
and the key value is only checked for correctness. See the info specific to a particular bootloader for any limitations.
In 8-bit mode, the LSB of the 16-bit word is read first followed by the MSB.
SPRUHE8E – October 2012 – Revised November 2019
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Figure 6-15. Bootloader Basic Transfer Procedure
No
?
Yes
DataSize
Yes
Return
EntryPoint
?
No
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Read second word
(W2) and discard
upper 8-bits
No
W2:W1=
0x08AA
?
Yes
8-bit
C-Boot ROM Description
Data format error
Return flash
entry point
ROM Code and Peripheral Booting
643