TMS320F2810PBKA datasheet(91/173 Pages) TI

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TMS320F2810, TMS320F2811, TMS320F2812

www.ti.com

SPRS174U – APRIL 2001 – REVISED JULY 2019

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Detailed Description

(1)

See the TMS320F281x DSPs Silicon Errata for some restrictions.

6.1.10 Security

The F281x supports 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 via 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, which matches the value stored in the password locations within the Flash.

NOTE

•

When the code-security passwords are programmed, all addresses between 0x3F 7F80

and 0x3F 7FF5 cannot be used as program code or data. These locations must be

programmed to 0x0000.

•

If the code security feature is not used, addresses 0x3F 7F80 through 0x3F 7FEF may

be used for code or data.

•

The 128-bit password (at 0x3F 7FF8–0x3F 7FFF) must not be programmed to zeros.

Doing so would permanently lock the device.

Table 6-2. Impact of Using the Code Security Module

ADDRESS

CODE SECURITY STATUS

Code Security Enabled

Code Security Disabled

0x3F 7F80 – 0x3F 7FEF

Fill with 0x0000

Application code and data(1)

0x3F 7FF0 – 0x3F 7FF5

0x3D 7BFC – 0x3D 7BFF

Application code and data

Disclaimer

Code Security Module Disclaimer

THE CODE SECURITY MODULE (CSM) INCLUDED ON THIS DEVICE WAS DESIGNED

TO PASSWORD PROTECT THE DATA STORED IN THE ASSOCIATED MEMORY

(EITHER ROM OR FLASH) AND IS WARRANTED BY TEXAS INSTRUMENTS (TI), IN

ACCORDANCE WITH ITS STANDARD TERMS AND CONDITIONS, TO CONFORM TO

TI'S PUBLISHED SPECIFICATIONS FOR THE WARRANTY PERIOD APPLICABLE FOR

THIS DEVICE.

TI DOES NOT, HOWEVER, WARRANT OR REPRESENT THAT THE CSM CANNOT BE

COMPROMISED OR BREACHED OR THAT THE DATA STORED IN THE ASSOCIATED

MEMORY CANNOT BE ACCESSED THROUGH OTHER MEANS. MOREOVER, EXCEPT

AS SET FORTH ABOVE, TI MAKES NO WARRANTIES OR REPRESENTATIONS

CONCERNING THE CSM OR OPERATION OF THIS DEVICE, INCLUDING ANY IMPLIED

WARRANTIES OF MERCHANT ABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

IN NO EVENT SHALL TI BE LIABLE FOR ANY CONSEQUENTIAL, SPECIAL, INDIRECT,

INCIDENTAL, OR PUNITIVE DAMAGES, HOWEVER CAUSED, ARISING IN ANY WAY

OUT OF YOUR USE OF THE CSM OR THIS DEVICE, WHETHER OR NOT TI HAS BEEN

ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE,

BUT ARE NOT LIMITED TO LOSS OF DATA, LOSS OF GOODWILL, LOSS OF USE OR

INTERRUPTION OF BUSINESS OR OTHER ECONOMIC LOSS.

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