Invalidate All Cache Contents. Any time this register location is written (regardless of the data value), the cache controller immediately begins invalidating the entire contents of the cache memory. The cache will be in bypass mode until the invalidate operation is complete. System software can examine the Cache Ready bit (CACHE_CTRL.CACHE_RDY) to determine when the invalidate operation is complete. Note that it is not necessary to disable the cache controller prior to beginning this operation. Reads from this register always return 0.
| IA | Invalidate all cache contents. |