SLAZ755C May 2024 – November 2025 MSPM0L1227 , MSPM0L1227-Q1 , MSPM0L1228 , MSPM0L1228-Q1 , MSPM0L2227 , MSPM0L2227-Q1 , MSPM0L2228 , MSPM0L2228-Q1
CPU Module
Functional
Limitation of disabling prefetch for CPUSS
CPU prefetch disable will not take effect if there is a pending flash memory access.
Disable the prefetcher, then issue a memory access to the shutdown memory (SHUTDNSTORE) in SYSCTL, this can be done with SYSCTL.SOCLOCK.SHUTDNSTORE0;
After the memory access completes the prefetcher will be disabled.
Example:
CPUSS.CTL.PREFETCH = 0x0; //disables prefetcher
SYSCTL.SOCLOCK.SHUTDNSTORE0; // memory access to shutdown memory