Avago Technologies LSI53C320 - Manual (Page 11)

LSI53C320 Ultra320 SCSI Bus Expander Technical Manual 1-1
Version 2.2 Copyright © 2003 by LSI Logic Corporation. All rights reserved.
Chapter 1
Introduction
This chapter describes the LSI53C320 Ultra320 SCSI Bus Expander and
includes these sections:
•
Section 1.1, “General Description,” page 1-1
•
Section 1.2, “Applications,” page 1-3
•
Section 1.3, “Benefits of Ultra320 SCSI,” page 1-5
•
Section 1.4, “Benefits of SureLINK™ (Ultra320 SCSI Domain
Validation),” page 1-6
•
Section 1.5, “Benefits of LVDlink™ Technology,” page 1-6
•
Section 1.6, “Benefits of TolerANT
®
Technology,” page 1-7
•
Section 1.7, “Features,” page 1-7
1.1 General Description
The LSI53C320 Ultra320 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 without impact to the
software, firmware, or SCSI protocol implementation. The LSI53C320
Ultra320 SCSI Bus Expander connects Single-Ended (SE) Ultra SCSI
and Low Voltage Differential (LVD) Ultra320 SCSI peripherals together in
any combination. The LSI53C320 does not support High Voltage
Differential (HVD) mode.
The LSI53C320 supports any combination of the SE or LVD bus modes
on either the A Side or B Side port. This provides the system designer
with maximum flexibility in designing SCSI backplanes to accommodate
any SCSI bus mode. Each bus side on the LSI53C320 has an
independent RBIAS pin to allow for margining of each bus.