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AN3324 датащи(PDF) 29 Page - STMicroelectronics

номер детали AN3324
подробное описание детали  Implementing power-on self tests
PDF  37 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3324 датащи(HTML) 29 Page - STMicroelectronics

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AN3324
CPU core initialization
Doc ID 18311 Rev 2
29/37
A.2
Example of SPC56EL60 boot file for Flash
In boot file user has to provide a reset vector in order to run the application from Flash
memory. The standard startup process of SPC56ELX processor consists in execution of the
special boot code which reads specific addresses in a Flash memory where reset
configuration half word is stored together with boot reset vector pointing to first valid
instruction of the code. Refer to “Boot Assist Module (BAM)” section in RM0032 (see B.1:
Reference documents in Appendix B).
In this boot sequence user must initialize SRAM and copy data section from Flash to SRAM
(this operation is made only when user runs code from Flash). As it may see in scratch code
below stated, this copy is split into two steps and between them it is inserted software
watchdog refresh to avoid device reset.
Table 3.
SPC56EL60 registers to initialize
Register ranges
r0 - r31
spr1
spr8-spr9
spr22
spr26 - spr27
spr54
spr58 - spr59
spr61-spr63
spr256
spr272 - spr279
spr284 - spr285
spr318 - spr319
spr340
spr400-spr415
spr512
spr528-spr530
spr562
spr570 - spr571
spr573 - spr575
spr604 - spr605
spr628
spr630
ACC
CR



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