CSCTL0 Clock System Control 0 is the password register to unlock the CS registers.
CSKEY password. Must always be written with A5h; a PUC is
generated if any other value is written. Always reads as 96h. After
the correct password is written, all CS registers are available for
writing.
If anything other than the correct passwrd is written the unit resets (PUC). There is no mention of how to relock the CS registers.
What is the process to relock these registers? (Does the lock timeout?)
Thank you