Avago Technologies LSI SAS 3041X-R - Manual (Page 25)

PCI-X to 3.0 Gbit/s SAS Host Adapters User’s Guide 3-1
Version 2.1 Copyright © 2005, 2006 by LSI Logic Corporation. All rights reserved.
Chapter 3
Host Adapter Characteristics
This chapter describes the characteristics of the LSI PCI-X to 3.0 Gbit/s
SAS host adapters. The chapter includes these topics:
•
Section 3.1, “Characteristics of the PCI-X to 3.0 Gbit/s SAS Host
Adapters”
•
Section 3.2, “Electrical and Environmental Specifications”
3.1 Characteristics of the PCI-X to 3.0 Gbit/s SAS Host
Adapters
The PCI-X to 3.0 Gbit/s SAS host adapters use either the LSISAS1064
controller or the LSISAS1068 controller. The LSISAS1064 controller
connects up to four SAS/SATA devices to a computer system through the
PCI/PCI-X interface. The LSISAS1068 controller connects up to eight
SAS/SATA devices to a computer system through the PCI/PCI-X
interface. In both cases, the use of LSI expanders provides substantially
more connectivity. The LSISAS1064 and the LSISAS1068 support a 133
MHz, 64-bit PCI-X bus and are backwards compatible with revisions of
the PCI/PCI-X bus.
The LSISAS1064 and the LSISAS1068 controller chips contain the
PCI/PCI-X functionality for the PCI-X to 3.0 Gbit/s SAS host adapters.
The controller chip connects directly to the PCI/PCI-X bus and generates
timing and protocol in compliance with the PCI and PCI-X specifications.
The LSISAS1064 and the LSISAS1068 controller chips contain the
SAS/SATA functionality for the PCI-X to 3.0 Gbit/s SAS host adapters.
The controller chips connect channels directly to the SAS/SATA devices.
The PCI-X to 3.0 Gbit/s SAS host adapters provide up to 2 M x 8-bit
Flash ROM for storing the configuration settings, as well as the BIOS and