Altera SerialLite II Protocol - Manual (Page 10)

10 Altera Corporation
SerialLite II Protocol Reference Manual
Architectural Overview
■ Shelf-to-shelf connectivity
■ Backplane communication
Architectural
Overview The SerialLite II protocol involves the Data Link layer and the Physical
layer of the OSI layer reference model, as shown in
Figure 2–1 . The
Physical layer is fully implemented. The link layer can be also be fully
implemented; though the amount of link-layer functionality that is added
to the SerialLite II protocol can be application specific. The SerialLite II
protocol integrates transparently with existing networks and provides a
reliable data transfer mechanism in simple applications that do not need
the layers between the Data Link layer and the Application layer, or that
do not use the OSI model at all.
Figure 2–1. OSI Reference Model Layers
SerialLite II is a general-purpose protocol useful for a wide variety of
applications. The SerialLite II interface consists of a scalable number of
physical data lanes, as shown in
Figure 2–2 .
Figure 2–2. SerialLite Architecture Overview
Data Link
Network
Transport
Session
Presentation
Application
SerialLite II
Physical
One or More
Lanes
Logical
Electrical
Physical Layer
Link Layer
Logical
Electrical
Physical Layer
Link Layer
User
Application
User
Application