VSC7130 データシートの表示（PDF） - Vitesse Semiconductor
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VSC7130 Datasheet PDF : 22 Pages
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Data Sheet
VSC7130
VITESSE
SEMICONDUCTOR CORPORATION
Dual Repeater/Retimer
for Fibre Channel and Gigabit Ethernet
Fibre Channel Hub
The VSC7130 may be used as a single node in a Fibre Channel Arbitrated Loop Hub. In this application,
incoming data on RX goes through a repeater (CDR1) which reduces jitter. The data is then output on SO to the
next hub node. Incoming data from the previous hub node on SI goes through CDR0 which is configured as a
retimer to eliminate any jitter generated inside the Hub. A bypass multiplexer (MUX3) is used to bypass nodes
which do not have active devices connected. The signal detection circuitry identifies valid data at RX in order to
control the configuration of MUX3. The BYP pin may be connected via an inverter to SDET, BYP may be con-
trolled externally or MUX3 may be controlled via the Two-Wire Interface.
Access to internal registers through the Two-Wire Interfaces allows numerous features requires by sophisti-
cated managed Hubs such as Ordered Set Recognition, Ordered Set Generation and simple traffic monitoring.
Figure 2: Fibre Channel Arbitrated Loop Hub
External
Device
External
Device
External
Device
TX
CDR0
Retimer
RX
CDR1
Repeater
TX
CDR0
Retimer
RX
CDR1
Repeater
TX
CDR0
Retimer
RX
CDR1
Repeater
SI
Node N-1
SO
SI
MUX3
SO
SI
Node N
MUX3
SO
MUX3
Node N+1
Internal Loop
Optical/Electrical Transceiver (GBIC)
As a dual repeater, the VSC7130 may provide the functions required on an Optical/Electrical transceiver
such as an Optical or an a active copper Gigabit Interface Converter (GBIC). In this application, outgoing data
from a system goes through CDR0 which can be configured as either a repeater or a retimer. Incoming data
passing through repeater CDR1 is transferred to the system. This function implements the critical circuits in an
active GBIC including RX_LOS.
G52297-0, Rev 4.0
04/02/01
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
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