Intel E3-1220L CM8062307262828 用户手册
产品代码
CM8062307262828
Interfaces
26
Datasheet, Volume 1
PCI Express uses packets to communicate information between components. Packets
are formed in the Transaction and Data Link Layers to carry the information from the
transmitting component to the receiving component. As the transmitted packets flow
through the other layers, they are extended with additional information necessary to
handle packets at those layers. At the receiving side, the reverse process occurs and
packets get transformed from their Physical Layer representation to the Data Link
Layer representation and finally (for Transaction Layer Packets) to the form that can be
processed by the Transaction Layer of the receiving device.
are formed in the Transaction and Data Link Layers to carry the information from the
transmitting component to the receiving component. As the transmitted packets flow
through the other layers, they are extended with additional information necessary to
handle packets at those layers. At the receiving side, the reverse process occurs and
packets get transformed from their Physical Layer representation to the Data Link
Layer representation and finally (for Transaction Layer Packets) to the form that can be
processed by the Transaction Layer of the receiving device.
Figure 2-2.
PCI Express* Layering Diagram
Figure 2-3.
Packet Flow through the Layers