1.7.5 Cortex-M Cache Controller (CMCC)
The Cortex-M Cache Controller (CMCC) is a 4-Way set associative unified cache controller. It integrates a controller, a tag directory, data memory, metadata memory and a configuration interface.
Using The Library
At runtime, I/D Cache can be enabled or disabled using the corresponding APIs (CMCC_Enable(I/D)Cache and CMCC_Disable(I/D)Cache). When the content of the cache becomes stale, it can be invalidated using the CMCC_InvalidateAll function.
Library Interface
Cortex-M Cache Controller peripheral library provides the following interfaces:
| Name | Description |
|---|---|
| CMCC_Disable | Disable the cortex M cache controller |
| CMCC_EnableICache | Enables the Instruction cache |
| CMCC_DisableICache | Disables the Instruction cache |
| CMCC_EnableDCache | Enables the Data cache |
| CMCC_DisableDCache | Disables the Data cache |
| CMCC_InvalidateAll | Invalidates the complete cache |