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31.7.1.2. Architecture Overview
The Prefetcher core supports all the three existing Modular SGDMA configurations:
- Memory-Mapped to Memory-Mapped
- Memory-Mapped to Streaming
- Streaming to Memory-Mapped
On interfaces facing host and external peripherals, it has dedicated Avalon® -MM read and write host interfaces to fetch series of descriptors from memory as well as performing a descriptor write back. It has one Avalon® Memory-Mapped CSR agent interface for the host processor to access the configuration register in the Prefetcher core.
On interfaces facing the internal dispatcher core, it has an Avalon® -MM descriptor write host interface to write a descriptor to the dispatcher core. It has Avalon® -ST response sink interface to receive response information from the dispatcher core upon completion of each descriptor execution.