Review Of Packet Types And Formats
How a packet is routed depends in large part on the type of packet it is. Each packet in HyperTransport is a multiple of four bytes in size, and the specification divides packets into two types: control and data. All control packets contain a Command Type field in the first byte which identifies which type of control packet it is and the format of the remaining packet fields to follow. It also indicates whether data packets follow immediately (writes), will return later (reads), or are not required.
Control Packets
Control packets are sent across a link to initiate specific tasks; they contain information fields used for several purposes: address decoding, virtual channel and transaction stream management, ...
Get HyperTransport™ System Architecture now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
