TMS320F28375DPZP datasheet(197/226 Pages) TI

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9.10.1 EMU Boot or Emulation Boot

The CPU enters this boot when it detects that TRST is HIGH (that is, when a JTAG debug probe/debugger is

connected). In this mode, the user can program the EMU_BOOTCTRL control-word (at location 0xD00) to

instruct the device on how to boot. If the contents of the EMU_BOOTCTRL location are invalid, then the device

would default to WAIT Boot mode. The emulation boot allows users to verify the device boot before

programming the boot mode into OTP. Note that EMU_BOOTCTRL is not actually a register, but refers to a

location in RAM (PIE RAM). PIE RAM starts at 0xD00, but the first few locations are reserved (when initializing

the PIE vector table in application code) for these boot ROM variables.

9.10.2 WAIT Boot Mode

The device in this boot mode loops in the boot ROM. This mode is useful if users want to connect a debugger on

a secure device or if users do not want the device to execute an application in flash yet.

9.10.3 Get Mode

The default behavior of Get mode is boot-to-flash. This behavior can be changed by programming the Zx-

OTPBOOTCTRL locations in user configurable DCSM OTP. The user configurable DCSM OTP on this device is

divided in to two secure zones: Z1 and Z2. The Get mode function in boot ROM first checks if a valid

OTPBOOTCTRL value is programmed in Z1. If the answer is yes, then the device boots as per the Z1-

OTPBOOTCTRL location. The Z2-OTPBOOTCTRL location is read and decodes only if Z1-OTPBOOTCTRL is

invalid or not programmed. If either Zx-OTPBOOTCTRL location is not programmed, then the device defaults to

factory default operation, which is to use factory default boot mode pins to boot to flash if the boot mode pins are

set to GET MODE. Users can choose the device through which to boot—SPI, I2C, CAN, and USB—by

programming proper values into the user configurable DCSM OTP. More details on this can be found in the

TMS320F2837xD Dual-Core Microcontrollers Technical Reference Manual .

www.ti.com

TMS320F28379D, TMS320F28379D-Q1, TMS320F28378D, TMS320F28377D

TMS320F28377D-Q1, TMS320F28376D, TMS320F28375D, TMS320F28374D

SPRS880O – DECEMBER 2013 – REVISED FEBRUARY 2021

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Product Folder Links: TMS320F28379D TMS320F28379D-Q1 TMS320F28378D TMS320F28377D

TMS320F28377D-Q1 TMS320F28376D TMS320F28375D TMS320F28374D

TMS320F28375DPZP Datasheet(PDF) 197 Page - Texas Instruments