參數(shù)資料
型號: SYM53C140
廠商: LSI CORP
元件分類: 其它接口
英文描述: Ultra2 SCSI Bus Expander(Ultra2 SCSI總線擴(kuò)展器)
中文描述: SPECIALTY INTERFACE CIRCUIT, PQFP160
封裝: 32 MM, PLASTIC, QFP-160
文件頁數(shù): 9/68頁
文件大?。?/td> 928K
代理商: SYM53C140
Symbios SYM53C140 Ultra2 SCSI Bus Expander
1-1
Chapter 1
Introduction
1.1 General Description
The SYM53C140 Ultra2 SCSI Bus Expander is a single chip solution
allowing the extension of SCSI device connectivity and/or cable length
limits. A SCSI bus expander couples bus segments together without any
impact to the SCSI protocol, software, or firmware. The SYM53C140
Ultra2 SCSI Bus Expander connects Single-Ended (SE) Ultra, Low-
Voltage Differential (LVD) Ultra2 or High-Voltage Differential (HVD)
peripherals together in any combination.
The SYM53C140 is capable of supporting any combination of bus mode
SE, HVD, or LVD on either the A or B Side port. This provides the system
designer with maximum flexibility in designing SCSI backplanes to
accommodate any SCSI bus mode.
Figure 1.1
SYM53C140 SCSI Bus Modes
Figure 1.1 shows the three SCSI bus modes available on the A or B
Side. LVDlink
transceivers provide the multimode LVD, SE, or HVD
capability. The SYM53C140 operates either as a expander or converter.
In both SCSI Bus Expander and Converter modes, cable segments are
electrically isolated from each other. This feature maintains the signal
integrity of each cable segment.
SYM53C140
SCSI Expander
160 PQFP
A-Side
B-Side
LVD
HVD (*)
SE
LVD
HVD (*)
SE
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