September 2003
Intermediate to advanced
1120 pages
23h 44m
English
Content preview from PCI Express System ArchitectureBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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The PCI Express Way
PCI Express provides a high-speed, high-performance, point-to-point, dual simplex, differential signaling Link for interconnecting devices. Data is transmitted from a device on one set of signals, and received on another set of signals.
The Link - A Point-to-Point Interconnect
As shown in Figure 1-20, a PCI Express interconnect consists of either a x1, x2, x4, x8, x12, x16 or x32 point-to-point Link. A PCI Express Link is the physical connection between two devices. A Lane consists of signal pairs in each direction. A x1 Link consists of 1 Lane or 1 differential signal pair in each direction for a total of 4 signals. A x32 Link consists of 32 Lanes or 32 signal pairs for each direction for a total of 128 signals. The Link ...
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