TMS320F28069MPZPQ datasheet(46/181 Pages) TI

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TMS320F28069, TMS320F28069F, TMS320F28069M, TMS320F28068F, TMS320F28068M

TMS320F28067, TMS320F28066, TMS320F28065, TMS320F28064

TMS320F28063, TMS320F28062, TMS320F28062F

SPRS698H – NOVEMBER 2010 – REVISED MARCH 2020

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TMS320F28067 TMS320F28066 TMS320F28065 TMS320F28064 TMS320F28063 TMS320F28062

TMS320F28062F

Detailed Description

6.1.10.3 Peripheral Pins Used by the Bootloader

Table 6-2 shows which GPIO pins are used by each peripheral bootloader. Refer to the GPIO mux table

to see if these conflict with any of the peripherals you would like to use in your application.

Table 6-2. Peripheral Bootload Pins

BOOTLOADER

PERIPHERAL LOADER PINS

SCI

SCIRXDA (GPIO28)

SCITXDA (GPIO29)

Parallel Boot

Data (GPIO31,30,5:0)

28x Control (AIO6)

Host Control (AIO12)

SPI

SPISIMOA (GPIO16)

SPISOMIA (GPIO17)

SPICLKA (GPIO18)

SPISTEA (GPIO19)

I2C

SDAA (GPIO28)

SCLA (GPIO29)

CAN

CANRXA (GPIO30)

CANTXA (GPIO31)

6.1.11 Security

The devices support high levels of security to protect the user firmware from being reverse-engineered.

The security features a 128-bit password (hardcoded for 16 wait states), which the user programs into the

flash. One code security module (CSM) is used to protect the flash/OTP and the L0/L1 SARAM blocks.

The security feature prevents unauthorized users from examining the memory contents through the JTAG

port, executing code from external memory or trying to boot-load some undesirable software that would

export the secure memory contents. To enable access to the secure blocks, the user must write the

correct 128-bit KEY value that matches the value stored in the password locations within the Flash.

In addition to the CSM, the emulation code security logic (ECSL) has been implemented to prevent

unauthorized users from stepping through secure code. Any code or data access to CSM secure memory

while the debug probe is connected will trip the ECSL and break the emulation connection. To allow

emulation of secure code, while maintaining the CSM protection against secure memory reads, the user

must write the correct value into the lower 64 bits of the KEY register, which matches the value stored in

the lower 64 bits of the password locations within the flash. Dummy reads of all 128 bits of the password

in the flash must still be performed. If the lower 64 bits of the password locations are all ones

(unprogrammed), then the KEY value does not need to match.

When initially debugging a device with the password locations in flash programmed (that is, secured), the

CPU will start running and may execute an instruction that performs an access to a protected ECSL area.

If this happens, the ECSL will trip and cause the debug probe connection to be broken.

TMS320F28069MPZPQ 数据表(PDF) 46 Page - Texas Instruments

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