Texas Instruments TMS320 2833 Series User Manual

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Yes
No
Yes
No
Deviceunsecure
Usercanaccess
on-chipsecure
memory
Devicepermanentlysecured
CPUaccessislimited.
Devicecannotbedebugged
orreprogrammed.
DodummyreadofPWL
0x33FFF8 − 0x33FFFF
KEYregisters=allones
Correct
password?
ArePWL=
allFs?
ArePWL=
allzeros?
Devicesecureafter
resetorruntime
No
Yes
Writethepasswordto
KEYregisters
0x000AE0 0x000AE7
(A)
−
www.ti.com Code Security Module (CSM)
55
SPRUI07–March 2020
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System Control and Interrupts
1.2.3.2 Password Match Flow
Password match flow (PMF) is essentially a sequence of eight dummy reads from password locations
(PWL) followed by eight writes to KEY registers.
Figure 1-12 shows how the PMF helps to initialize the security logic registers and disable security logic.
Figure 1-12. Password Match Flow (PMF)
A The KEY registers are EALLOW protected.

Texas Instruments TMS320 2833 Series Specifications

General

Brand	Texas Instruments
Model	TMS320 2833 Series
Category	Controller
Language	English