參數(shù)資料
型號(hào): SYM53C180
廠商: LSI Corporation
英文描述: Ultra3 SCSI Bus Expander(Ultra2 SCSI總線擴(kuò)展器)
中文描述: 個(gè)Ultra3 SCSI總線擴(kuò)展(Ultra2的SCSI總線擴(kuò)展器)
文件頁數(shù): 14/78頁
文件大小: 1073K
代理商: SYM53C180
1-4
Introduction
In the second example, Figure 1.3, the SYM53C180 is cascaded to
achieve four distinct SCSI segments. Segments A and D can be treated
as point-to-point segments. Segments B and C are treated as load
segments with at least 8-inch spacing between every node.
Figure 1.3
SYM53C180 SCSI Bus Device
Table 1.2
SCSI Bus Distance Requirements
Segment
Mode
Length Limit
A
LVD (Ultra3)
25 meters
SE (Ultra)
3 meters
1
B
LVD (Ultra3)
12 meters
SE (Ultra)
1.5 meters
C
LVD (Ultra3)
12 meters
SE (Ultra)
1.5 meters
1. The length may be more, possibly 6 meters, as no devices are
attached to it.
Table 1.3
Transmission Mode Distance Requirements
Segment
Mode
Length Limit
A, D
LVD (Ultra3)
25 meters
SE (Ultra)
1.5 meters
B, C
LVD (Ultra3)
12 meters
SE (Ultra)
1.5 meters
Segment A
Segment B
Segment C
Primary
Server
Secondary
Server
Shared Disk
Subsystem
SCSI Bus
Expander
SCSI Bus
Expander
SCSI Bus
Expander
Segment D
Shared Disk
Subsystem
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