Microsemi SmartFusion2 - Figure 315 RO-P Type; Figure 316 RO-U Type; Figure 317 Register Lock Bit Settings; Register Lock Bits Configuration

System Register Block
UG0331 User Guide Revision 15.0 674
Figure 315 • RO-P Type
Figure 316 • RO-U Type
22.1 Register Lock Bits Configuration
The Register Lock Bits Configuration tool is used to lock MSS, SERDES, and FDDR configuration
registers of SmartFusion2 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
SmartFusion2 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. (see the following figure).
Figure 317 • Register Lock Bit Settings
R
QD
S
Flash Configuration Bit
SYSRESET_N
REG_BIT
MSS_P[] (per-bit)
1
0
WDATA[n]
RDATA[n]
AHB Bus Matrix
LOADENABLEFLOP
Reset
Controller
MSS
R
QD
S
Flash Configuration BIt
SYSRESET_N
REG_BIT
Reset
Controller
MSS
MSS_P[] (per-bit)
-
LOADENABLEFLOP