39.7.16 Register Write Protection
To prevent any single software error from corrupting EBI behavior, certain registers in the address space can be write-protected by setting the WPEN bit in the SMC Write Protection Mode Register (SMC_WPMR).
If a write access to a write-protected register is detected, the WPVS flag in the SMC Write Protection Status Register (SMC_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 the SMC_WPSR. The following registers can be write-protected:
- Setup Register
- Pulse Register
- Cycle Register
- Mode Register