vsc7124 Vitesse Semiconductor Corp, vsc7124 Datasheet - Page 2

• Manufacturer Part Number: vsc7124
• Description: Quad Port Bypass Circuit Semiconductor Corporation
• Manufacturer: Vitesse Semiconductor Corp

Page 2
Quad Port Bypass Circuit
Application Example
A 12-port JBOD is shown in Figure 1. This dual loop application uses one VSC7127R, one VSC7127T and one
VSC7124 on each loop in order to configure the FC-AL disk array. Functional drives are included in the FC-
AL loop while nonfunctional or missing drives (numbers 2, 7, 9) are excluded.
CONFIGURATION:
VSC7127R #1 & 2: Repeater Mode
SEL0=1, SEL5=1
MODE=0
VSC7127T #5 & 6: Retimer Mode
SEL1=1, SEL5=1
MODE=1
VSC7124 #3 & 4: No CRU
Optics
Copper
Optics
Copper
or
or
LOOP A
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
LOOP B
Tel: (800) VITESSE • FAX: [phone] • Email: [e-mail]
Figure 1: 12-Drive FC-AL JBOD Application
VITESSE
SEMICONDUCTOR CORPORATION
Internet: www.vitesse.com
Repeater
Retimer
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
2
4
3
2
4
3
1
4
3
1
2
Advance Product Information
Repeater
Retimer
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
SerDes
7125
7125
7125
7125
7125
7125
7125
7125
7125
7125
7125
7125
7125
7125
7125
7125
7125
7125
VSC7124
G52293-0, Rev 2.3
1
2
3
4
5
6
7
8
9
10
11
12
5/7/01