Bootloader Basic Transfer Procedure - Texas Instruments Concerto F28M35 Series Technical Reference Manual

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C-Boot ROM Description
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.
600
ROM Code and Peripheral Booting
Figure 6-16. Bootloader Basic Transfer Procedure
No
?
Yes
DataSize
Yes
Return
EntryPoint
?
No
Copyright © 2012–2019, Texas Instruments Incorporated
Read second word
(W2) and discard
upper 8-bits
No
W2:W1=
0x08AA
?
Yes
8-bit
SPRUH22I – April 2012 – Revised November 2019
www.ti.com
Data format error
Return flash
entry point
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