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| TMS320F28379S_16 Datasheet, PDF (193/213 Pages) Texas Instruments – Programmable Control Law Accelerator | |||
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www.ti.com
TMS320F28379S, TMS320F28377S
TMS320F28376S, TMS320F28375S, TMS320F28374S
SPRS881C â AUGUST 2014 â REVISED MAY 2016
6.9 Boot ROM and Peripheral Booting
The device boot ROM contains bootloading software. The device boot ROM is executed each time the
device comes out of reset. Users can configure the device to boot to flash (using GET mode) or choose to
boot the device through one of the bootable peripherals by configuring the boot mode GPIO pins.
Table 6-13 shows the possible boot modes supported on the device. The default boot mode pins are
GPIO72 (boot mode pin 1) and GPIO 84 (boot mode pin 0). Users may choose to have weak pullups for
boot mode pins if they use a peripheral on these pins as well, so the pullups can be overdriven. On this
device, customers can change the factory default boot mode pins by programming user-configurable Dual
Code Security Module (DCSM) OTP locations. This is recommended only for cases in which the factory
default boot mode pins do not fit into the customer design. More details on the locations to be
programmed is available in the TMS320F2837xS Delfino Microcontrollers Technical Reference Manual.
Table 6-13. Device Boot Mode
MODE NO.
CPU1 BOOT MODE
0
Parallel IO
1
SCI Mode
2
Wait Boot Mode
3
Get Mode
4-7
EMU Boot Mode (Emulator Connected)
TRST
0
0
0
0
1
GPIO72
(BOOT
MODE
PIN 1)
0
0
1
1
X
GPIO84
(BOOT
MODE
PIN 0)
0
1
0
1
X
NOTE
The default behavior of Get mode is boot-to-flash. On unprogrammed devices, using Get
mode will result in repeated watchdog resets, which may prevent proper JTAG connection
and device initialization. Use Wait mode or another boot mode for unprogrammed devices.
CAUTION
Some reset sources are internally driven by the device. The user must ensure
the pins used for boot mode are not actively driven by other devices in the
system for these cases. The boot configuration has a provision for changing the
boot pins in OTP. For more details, see the TMS320F2837xS Delfino
Microcontrollers Technical Reference Manual.
Copyright © 2014â2016, Texas Instruments Incorporated
Detailed Description 193
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Product Folder Links: TMS320F28379S TMS320F28377S TMS320F28376S TMS320F28375S TMS320F28374S
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