Processor Pipelines
There are several pipelines and engines in the APU:
- CPU Pipeline with AArch32 and AArch64 instructions
- FPU Pipeline with 32 and 64-bit data
- NEON Pipeline with single instruction multiple data (SIMD) dispatch
- Cryptography Engine
L1 Caches
Each processor includes its own local L1 cache connected to the SCU and L2-cache memory.
Cache features include:
- 48 KB instruction cache protected with parity and includes a 48-entry fully associative TLB
- 32 KB data cache protected with ECC and includes a 32-entry fully associative TLB
L2 Cache
The 1 MB, unified L2 cache with ECC is physically addressed and physically tagged.
- 4-way set associative 1024-entry TLB
- PL can be coherent using S_ACE_FPD, S_ACP_FPD, S_AXI_HPC, NSU2, and NSU3 interfaces
- CPM can be coherent using ACE-Lite port via SMMU TBU 3