220.127.116.11. Instruction and Data Master Ports
The instruction master port is a pipelined Avalon® Memory-Mapped ( Avalon® -MM) master port. The core also includes a data cache with a fixed 32-byte line size, making he data master port a pipelined Avalon® -MM master port.
The instruction and data master ports on the Nios II/f core are optional. A master port can be excluded, as long as the core includes at least one tightly-coupled memory to take the place of the missing master port.
Support for pipelined Avalon® -MM transfers minimizes the impact of synchronous memory with pipeline latency. The pipelined instruction and data master ports can issue successive read requests before prior requests complete.
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