LSI SAS3041E - Manual (Page 25)

PCIe to 3.0 Gbit/s SAS Host Adapters User’s Guide 3-1
Version 1.0 Copyright © 2006 by LSI Logic Corporation. All rights reserved.
Chapter 3
Host Adapter Characteristics
This chapter describes the characteristics of the LSI PCIe to 3.0 Gbit/s
SAS host adapters. The chapter includes these topics:
•
Section 3.1, “Characteristics of the LSI PCIe to SAS Host Adapters”
•
Section 3.2, “Electrical and Environmental Specifications”
3.1 Characteristics of the LSI PCIe to SAS Host Adapters
The LSI PCIe to SAS host adapters use either the LSISAS1064E
controller or the LSISAS1068E controller. The LSISAS1064E controller
connects up to four SAS/SATA devices to a computer system through the
PCI Express interface. The LSISAS1068E controller connects up to eight
SAS/SATA devices to a computer system through the PCI Express
interface. The LSI controllers are implemented using either four
(LSISAS1064E) or eight (LSISAS1068E) PCI Express phys. Each phy
operates at 2.5 Gbits/s which provide possible host-side maximum
transmission and reception rates of up to 4.0 Gbytes/s.
The LSISAS1064E and the LSISAS1068E controller chips contain the
PCI Express functionality for the LSI PCIe to SAS host adapters. The
controller chip connects directly to the PCI Express bus and generates
timing and protocol in compliance with the PCI Express specification.
The LSISAS1064E and the LSISAS1068E controller chips contain the
SAS/SATA functionality for the LSI PCIe to SAS host adapters. The
controller chips connect channels directly to the SAS/SATA devices.
The LSI PCIe to SAS host adapters provide a 2M x 8-bit Flash ROM for
storing the BIOS and firmware. The LSI PCIe to SAS host adapters
provide up to 32 K x 8-bit NVSRAM for storing the nonvolatile RAID
information when a system failure happens. The LSISAS3442E,