Transaction Examples: Introduction
The following section describes some transactions which might be seen in HyperTransport. Not all cases are covered, but the ones which are presented are intended to illustrate two important aspects of each transaction:
Packet Format And Optional Features
Most of the control packet variants have a number of fields used to enable optional features: isochronous vs. standard virtual channels, byte vs. dword data transfers, posted vs. non-posted channels, etc. In each of the examples, the key options are described; in some cases, certain packet fields don't apply to a particular request or response at all. Refer to Chapter 4, entitled "Packet Protocol," on page 59 for low level, bit-by-bit packet field descriptions. ...
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