Victim Cache - 2024.2 English

The victim cache is enabled by setting the parameter C_DCACHE_VICTIMS to 2, 4 or 8. This defines the number of cache lines that can be stored in the victim cache. Whenever a complete cache line is evicted from the cache, it is saved in the victim cache. By saving the most recent lines they can be fetched much faster, should the processor request them, thereby improving performance. If the victim cache is not used, all evicted cache lines must be read from memory again when they are needed.

With the AXI4 interface, C_DCACHE_DATA_WIDTH determines the amount of data transferred from/to the victim cache each clock cycle, either 32 bits or an entire cache line.