Texas Instruments TMS320 2833 Series

SCI_Boot
Enable the SCI-A clock
set the LSPCLK to /4
functionality and pullups on
Enable the SCIA TX and RX pin
Setup SCI-A for
1 stop, 8-bit character,
no parity, use internal
SC clock, no loopback,
disable Rx/Tx interrupts
Disable SCI FIFOs
Prime SCI-A baud register
Enable autobaud detection
Autobaud
lock
?
No
Yes
Echo autobaud character
Read KeyValue
Yes
No
Valid
KeyValue
(0x08AA)
?
Return
FLASH_ENTRY_POINT
Read and discard 8
reserved words
Read EntryPoint address
Call CopyData
EntryPoint
Return
Set GetWord function pointer
to SCIA_GetWordData
TX and RX
Bootloader Features www.ti.com
190
SPRUI07–March 2020
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Boot ROM
Figure 2-16. Overview of SCI_Boot Function