参数资料
型号: SYM53C180I2
厂商: LSI CORP
元件分类: 总线控制器
英文描述: SCSI BUS CONTROLLER, PBGA192
封装: 23 X 23 MM, 1.27 MM PITCH, PLASTIC, BGA-192
文件页数: 5/78页
文件大小: 1073K
代理商: SYM53C180I2
General Description
1-3
1.1.1 Applications
Server clustering environments
Expanders creating distinct SCSI cable segments that are isolated
from each other
Figure 1.2
SYM53C180 Server Clustering
Figure 1.2 demonstrates how SCSI bus expanders are used to couple
bus segments together without any impact on the SCSI protocol or
software. Congurations that use the SYM53C180 SCSI Bus Expander
in the Ultra3 mode (LVD to LVD) allow the system designer to take
advantage of the inherent cable distance, device connectivity, data
reliability, and increased transfer rate benets of LVD signaling with
Ultra3 SCSI peripherals.
In the Figure 1.2 example, two SYM53C180 expanders are used to
congure three segments. This conguration allows segment A to be
treated as a point-to-point segment. Segments B and C are treated as a
load segments with at least 8 inches between every node. Table 1.2
shows the various distance requirements for each SCSI bus mode.
Segment A
Segment B
Segment C
Primary Server
Secondary Server
Shared Disk Subsystem
SCSI Bus
Expander
SCSI Bus
Expander
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