21.3 Register Lock Bits Configuration

The Register Lock Bits Configuration tool is used to lock the MSS, SERDES, and FDDR configuration registers of SmartFusion 2 devices in order to prevent them from being overwritten by masters that have access to these registers. Register lock bits are set in a text (*.txt) file, which is then imported into the SmartFusion 2 project. From the Design Flow window, click Configure Register Lock Bits to open the configurator. Then, click Browse... to navigate to the text file (*.txt) that contains the Register Lock Bit settings. The following figure shows register lock bit settings.