February 2003
Intermediate to advanced
592 pages
11h 47m
English
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The Two Packet Types: Control And Data
Packets moving across links fall into two groups: control packets and data packets. Control packet types are further divided into three additional classes: Information, Request, and Response.
Control Packet Purpose
The three classes of control packets serve the following purposes on a HyperTransport link:
Information packets
Information packets are always 4 bytes each. They are used for nearest neighbor communication between the transmitter-receiver pairs on each link; communication between these nodes is necessary for dynamic flow control updates and other miscellaneous functions. Information packets are not buffered internally or subject to flow control; when sent by a transmitter they must be accepted ...
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