LSISASX12 LSI, LSISASX12 Datasheet - Page 19

• Manufacturer Part Number: LSISASX12
• Manufacturer: LSI

Specifications of LSISASX12

• Lead Free Status / Rohs Status: Not Compliant

1.3
Expander Communication
Figure 1.3
The LSISASx12 supports Serial SCSI Protocol (SSP), Serial ATA
Tunneled Protocol (STP), Serial Management Protocol (SMP), and Serial
ATA (SATA) protocol. SSP provides mapping of SCSI commands to
support initiators and targets, and enables the LSISASx12 to
communicate with other SSP devices, such as SAS controllers and SAS
drives. STP maps serial ATA commands to support multiple initiators and
targets, and enables the LSISASx12 to communicate with serial ATA
devices. The STP target enclosure management bridge communicates
with an external enclosure management processor.
SMP provides management commands for SAS expanders. The
LSISASx12 provides an SMP block that enables initiator devices to
communicate directly to the LSISASx12. The SMP Target provides
access to the standard SMP functions and extended functions of the
LSISASx12. Initiators can use the SMP Target to perform discovery on
the LSISASx12 expander.
Expander Communication
Copyright © 2004, 2005 by LSI Logic Corporation. All rights reserved.
Routing Types
D = Direct
T = Table
S = Subtractive
LSISASx12
D
D
D
LSISASx12 Path Redundancy Application
Domain 0
LSISAS1064
LSISAS1064
Dual-Ported
SAS Drives
Dual-Ported
SAS Drives
Domain 1
D
LSISASx12
D
D
1-5