Code Security Module (CSM)
154
System Control and Interrupts
Figure 1-24. ECSL Password Match Flow
START
Zone's ECSL LOCK after
reset or runtime
Dummy read of ECSL PWL
of the secure zone, which
ECSL needs to be unlocked
Are ECSL
PWL = All
Fs?
NO
Write the ECSL Password of
that zone into ECSLKEYx
registers
NO
Correct
Password?
YES
Zone ECSL Unlock
Copyright © 2012–2019, Texas Instruments Incorporated
YES
SPRUHE8E – October 2012 – Revised November 2019
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