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: 4/78页
文件大小: 1073K
代理商: SYM53C180I2
1-2
Introduction
Figure 1.1
SYM53C180 SCSI Bus Modes
Figure 1.1 shows the two SCSI bus modes available on the A or B Side.
LVD Link transceivers provide the multimode LVD or SE capability. The
SYM53C180 operates as both an expander and converter. In both SCSI
Bus Expander and Converter modes, cable segments are isolated from
each other. This feature maintains the signal integrity of each cable
segment.
Table 1.1 shows the types of operational modes for the SYM53C180.
The SYM53C180 provides additional control capability through the pin
level isolation mode (Warm Swap Enable). This feature permits logical
disconnection of both the A Side bus and the B Side bus without
disrupting SCSI transfers currently in progress. For example, devices on
the logically disconnected B Side can be swapped out while the A Side
bus remains active.
The SYM53C180 is based on previous bus expander technology, which
includes signal ltering along with retiming to maintain skew budgets.
The SYM53C180 is independent of software.
Table 1.1
Types of Operation
Signal Type
Speed
LVD to LVD
Ultra3
SE to SE
Ultra
LVD to SE
Ultra
SE to LVD
Ultra
SYM53C180
SCSI Expander
192 PBGA
A Side
B Side
LVD
SE
LVD
SE
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