VSC7127R-QM 查看數據表（PDF） - Vitesse Semiconductor
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VSC7127R-QM Datasheet PDF : 12 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
Family of Repeater/Retimer and Port
Bypass Circuits for Fibre Channel
Data Sheet
VSC7127/VSC7129
Application: Fibre Channel Disk Arrays
A 12-port JBOD is shown in Figure 1. This dual loop application uses 3 VSC7127Xs on each loop in order
to configure the FC-AL disk array. Functional drives are included in the FC-AL loop while non-functional or
missing drives (numbers 2, 7, 9) are excluded.
Figure 1: 12-Drive FC-AL JBOD Application
Optics
or
Copper
LOOP A
CONFIGURATION:
7127R #1 & 2: Repeater Mode
SEL0=1, SEL5=1
MODE=0
7127R #3 & 4: Bypass Mode
SEL5=0
MODE=x, No REFCLK
7127T #5 & 6: Retimer Mode
SEL1=1, SEL5=1
MODE=1
Optics
or
Copper
LOOP B
1
Retimer
Retimer
01
7125
1
SerDes
01
0
7125
SerDes
01
2
01
4
01
3
01
2
1
0
01
4
01
3
01
2
01
01
01
01
01
7125
SerDes
3
7125
SerDes
7125
SerDes
4
7125
SerDes
7125
SerDes
5
7125
SerDes
7125
SerDes
6
7125
SerDes
7
01
7125
SerDes
8
01
1
7125
SerDes
0
0
01
9
01
4
01
3
01
2
01
1
01
01
01
7125
SerDes
10
7125
SerDes
7125
SerDes
11
7125
SerDes
7125
12
SerDes
7125
SerDes
Repeater
Repeater
0
Page 2
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
G52298-0, Rev 4.3
05/01/01
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