96CHAPTER 3 On-Chip Communication Architecture Standards
Four major applications or OCP-like profi les related to traffi c types are supported
by DTL. Each of these four profi les has requirements for signals that must be
implemented at the component interfaces. These profi les are presented below:
1. Memory-mapped input/output (MMIO): For low bandwidth and latency
critical control traffi c.
2. Memory-mapped block data (MMBD): For moving a block of data between
a CPU (or any other component) and memory. Examples include cache
line fi lls or cache line write-back on a CPU. This type of traffi c may be both
bandwidth and latency critical.
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