21.1.1 Register Write Protect

One Register Write Protect bit is used to write-protect entire register contents as shown in the following figure. On power-up, the register contents are initialized based on the Flash configuration bits set from the MSS configurator. If the Register Write Protect bit is set in the MSS configurator, the initialized value of the entire register cannot be modified by the user application. If the Register Write Protect bit is not set, the contents of the register can be modified by any bus master. Register Write Protect bits can only be modified by reprogramming the FPGA and is therefore protected by the standard FPGA programming security features.