32.5.8 Register Write Protection
To prevent any single software error from corrupting MPDDRC behavior, certain registers in the address space can be write-protected by setting the WPEN bit in the MPDDRC Write Protection Mode Register (MPDDRC_WPMR).
If a write access to a write-protected register is detected, the WPVS flag in the MPDDRC Write Protection Status Register (MPDDRC_WPSR) is set and the field WPVSRC indicates the register in which the write access has been attempted.
The WPVS bit is automatically cleared after reading MPDDRC_WPSR.
The following registers are write-protected when the bit WPEN is set:
- MPDDRC Mode Register
- MPDDRC Refresh Timer Register
- MPDDRC Configuration Register
- MPDDRC Timing Parameter 0 Register
- MPDDRC Timing Parameter 1 Register
- MPDDRC Memory Device Register
- MPDDRC OCMS Register
- MPDDRC OCMS KEY1 Register
- MPDDRC OCMS KEY2 Register
The following registers are write-protected when the bit WPITEN is set: