Serial ATA Storage Architecture and Applications (Excerpt 1)

The Link layer is the portion of the interface that is responsible for encoding transmitted data, for decoding received data, and for basic communications and protocol. Because the Link layer performs both encoding/decoding and provides the basic communications protocols, the Link layer description is divided between two chapters, with this chapter focusing on the encoding/decoding of data. Figure 9.1 indicates the layer of the architecture covered in this chapter.

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