F28M35H20B1_1110 Datasheet, PDF (40/104 Pages) Texas Instruments – Concerto Microcontrollers

F28M35H20B1, F28M35H20C1
F28M35H22B1, F28M35H22C1, F28M35H32B1, F28M35H32C1
F28M35H50B1, F28M35H50C1, F28M35H52B1, F28M35H52C1
SPRS742B – JUNE 2011 – REVISED OCTOBER 2011
www.ti.com
accordingly. The choices are, as above, to branch to already existing Control application code in Flash, to
branch to preloaded code in RAM (development mode), or to upload the Control application code from
one of several available peripherals (see Table 2-18). As before, once the Control application is in place
(in Flash or RAM), the C-Bootloader branches to it, and from that point on, the application code takes
over.
Control Subsystem
Boot Modes
BOOT_FROM_RAM
BOOT_FROM_FLASH
BOOT_FROM_SCI
BOOT_FROM_SPI
BOOT_FROM_I2C
BOOT_FROM_PARALLEL
Table 2-18. Control Subsystem Boot Mode Selection
MTOCIPCBOOTMODE
Register Value
0x0000 0001
0x0000 0002
0x0000 0003
0x0000 0004
0x0000 0005
0x0000 0006
Description
Upon receiving this command from the Master Subsystem, C-Boot
ROM will branch to the Control Subsystem RAM entry point location
and start executing code from there.
Upon receiving this command, C-Boot ROM will branch to the
Control Subsystem FLASH entry point and start executing code from
there.
Upon receiving this command, C-Boot ROM will boot from the
Control Subsystem SCI peripheral.
Upon receiving this command, C-Boot ROM will boot from the
Control Subsystem SPI interface.
Upon receiving this command, C-Boot ROM will boot from the
Control Subsystem I2C interface.
Upon receiving this command, C-Boot ROM will boot from the
Control Subsystem GPIO.
The boot process can be considered completed once the Cortex™-M3 and C28x are both running out of
their respective application programs. Note that following the boot sequence, the C-Bootloader is still
available to interpret and act upon an assortment of IPC commands that can be issued from the Master
Subsystem to perform a variety of configuration, housekeeping, and other functions. See the Concerto
F28M35x Technical Reference Manual (literature number SPRUH22) for additional information on
Concerto boot modes, IPC commands, and the underlying boot philosophy.
40
Device Overview
Submit Documentation Feedback
Copyright © 2011, Texas Instruments Incorporated