Chapter 5. Flow Control
The Previous Chapter
The previous chapter described the use of HyperTransport control and data packets to construct HyperTransport link transactions. Control packet types include Information, Request, and Response variants; data packets contain a payload of 0-64 valid bytes. The transmission, structure, and use of each packet type is presented.
This Chapter
This chapter describes HyperTransport flow control, used to throttle the movement of packets across each link interface. On a high-performance connection such as HyperTransport, efficient management of transaction flow is nearly as important as the raw bandwidth made possible by clock speed and data bus width. Topics covered here include background information on bus ...
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