參數(shù)資料
型號: SYM53C180
廠商: LSI Corporation
英文描述: Ultra3 SCSI Bus Expander(Ultra2 SCSI總線擴展器)
中文描述: 個Ultra3 SCSI總線擴展(Ultra2的SCSI總線擴展器)
文件頁數(shù): 11/78頁
文件大?。?/td> 1073K
代理商: SYM53C180
Symbios SYM53C180 Ultra3 SCSI Bus Expander
1-1
Chapter 1
Introduction
This chapter describes the SYM53C180 Ultra3 SCSI Bus Expander and
its applications. It includes these sections:
Section 1.1, “General Description,” page 1-1
Section 1.2, “Ultra3 SCSI,” page 1-6
1.1 General Description
The SYM53C180 Ultra3 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 SYM53C180
Ultra3 SCSI Bus Expander connects Single-Ended (SE) Ultra and Low-
Voltage Differential (LVD) Ultra3 peripherals together in any combination.
The SYM53C180 does not support High Voltage Differential (HVD)
mode.
The SYM53C180 is capable of supporting any combination of SE or LVD
bus mode 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. The SYM53C180 has independent
RBIAS pins allowing margining for each bus. A 10 k
pull-up resistor on
RBIAS is required to provide the correct LVD levels.
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