參數(shù)資料
型號(hào): LSIFC929
英文描述: LSIFC929 dual channel fibre solutions
中文描述: LSIFC929雙通道光纖解決方案
文件頁數(shù): 22/144頁
文件大小: 1496K
代理商: LSIFC929
2-2
Fibre Channel Overview
Figure 2.1
FC Layers
2.2 FC Layers
The lowest layer, FC-0, is the media interface layer. It defines the
physical characteristics of the interface. It includes transceivers,
copper-to-optical transducers, connectors, and any other associated
circuitry necessary to transmit or receive at 1062 or greater Mbaud/s
rates over copper or optical cable.
The FC-1 layer defines the 8b/10b encoding/decoding scheme, the
transmission protocol necessary to integrate the data and transmit clock,
and the receive clock recovery. Implementation of this layer is usually
divided between the hardware implementing the FC-0 layer in a
transceiver, and the protocol device which implements the FC-2 layer.
Specifically, the FC-0 transceivers can include the clock recovery circuitry
while the protocol device provides the 8b/10b encoding/decoding.
The FC-2 layer defines the rules for the signaling protocol and describes
transfer of the Frames, Sequences, and Exchanges. The meaning of the
data being transmitted or received is transparent to the FC-2 layer.
However, the FC-2 layer maintains the context between any given set of
IP
ESCON
HIPPI
IPI-3
FCP
8496
4248
2124
1062
Upper Layer Protocol
Common Services
Framing Protocol/Flow Control
8b/10b Encode/Decode
System
Interface
FC-4
FC-3
FC-2
FC-1
FC-0
Mbits/s
(Full Duplex)
FC-PH-2
Mbytes/s
100
200
400
800
Behaviors
Logical
Layers
Physical
Layers
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