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Static split/lock enables you to choose between performance mode, that is, a multiprocessing configuration with two processors, and lock-step mode, that is, a lock-step configuration with dualredundant logic.
Because this is a static split/lock, you can only switch modes during reset. The global input SAFEMODE enables you to choose the mode:
The SAFEMODE input must be kept stable during normal operation and can only be changed at reset.
The following figure shows how split/lock is implemented.
In static split/lock, core 1 is present with both
processor is operating in lock-step mode, the
Only the core 0 slave port of the SCU is duplicated. The interface
with core 1 is not required because, when in lock-step mode, the
noram is used as a redundancy of core