LSI 20160 - Manual (Page 17)

SureLINK™ Ultra160 SCSI Domain Validation Benefits 1-5
Copyright © 2001 by LSI Logic Corporation. All rights reserved.
1.3.2 Cyclic Redundancy Check (CRC)
Ultra160 SCSI includes CRC which offers higher levels of data reliability
by ensuring complete integrity of transferred data. CRC is a 32-bit
scheme, referred to as CRC-32. CRC is guaranteed to detect all single
bit errors, any two bits in error, or any combination of errors within a
single 32-bit range.
1.3.3 Asynchronous Information Protection (AIP)
The LSI53C1000 also supports AIP, which protects all nondata phases,
including command, status, and messages. CRC, along with AIP,
provides end-to-end protection of the SCSI I/O.
1.4 SureLINK™ Ultra160 SCSI Domain Validation Benefits
SureLINK software represents the very latest SCSI interconnect
management solution. It ensures robust and low risk Ultra160 SCSI
implementations by extending the Domain Validation guidelines
documented in the ANSI T10 SPI-3 specifications. Domain Validation
verifies that the system is capable of transferring data at Ultra160
speeds, allowing it to renegotiate to lower speed and bus width if
necessary.
SureLINK software is the control for the manageability enhancements in
the LSI53C1000. Fully integrated in the SDMS software solution,
SureLINK software provides Domain Validation at boot time, as well as
throughout system operation.
1.5 LVDlink™ Technology Benefits
The LSI20160 supports LVD for SCSI, a signaling technology that
increases the reliability of SCSI data transfers over longer distances than
are supported by SE SCSI. The low current output of LVD allows the I/O
transceivers to be integrated directly onto the chip. LVDlink technology
lowers the amplitude of noise reflections and allows higher transmission
frequencies. LVD provides a long-term migration path to even faster
SCSI transfer rates without compromising signal integrity, cable length,
or connectivity.