Product Brief
LSISAS2x36
36-Port 6Gb/s SAS/SATA Expander
Extending Its SAS Technology Leadership, LSI Introduces Its Third
Generation Of SAS/SATA Expanders
LSI offers the broadest SAS product portfolio in the industry with true end-to-end solutions controllers, expanders, active-active multiplexers, ROCs, host bus adapters, RAID solutions, and
external storage. LSI’s proven SAS core has completed extensive stress and interoperability testing
resulting in the industry’s most robust, interoperable solution.
A P P L I C AT I O N S
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SAS/SATA drive enclosures
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External RAID Subsystems
F E AT U R E S
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36 Phy edge expander
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6Gb/s SAS interface
– 6 and 3Gb/s SAS
– 6.0, 3.0, and 1.5Gb/s SATA
– Supports SSP, SMP and
STP protocols
– Wide port support
– Spread spectrum clocking
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Integrated enclosure processor
– ARM926 @ 150MHz
– I/D cache
– Internal RAM
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SSP and STP initiator function for
device management
SMP initiator function for device
management
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T-10 and Phy-based zoning
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11 GPIO pins
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3 LED pins per Phy
– Link status, drive activity,
fault LED outputs
– Can also be used as GPIOs
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External memory interfaces
– Flash, PBSRAM, NVSRAM
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Communication Interfaces
– Four I2C interfaces for enclosure
management services
Overview
The LSISAS2x36 is LSI’s third generation of SAS/
SATA expanders that incorporates the
latest enhancements in SAS technology.
The LSISAS2x36 is a 36-port 6 Gb/s SAS/SATA
expander with an integrated ARM processor
for topology management functions such as
discovery and enclosure management. This
device offers enhanced Enclosure Services such
as drive management and supports an optional
external enclosure management processor
interface. The external storage enclosure
processor interface is backward compatible
to the LSISASx36, LSI’s first generation SAS
expander, allowing customers to migrate to
the LSISAS2x36 with minimal changes to their
enclosure management solution.
The LSISAS2x36 supports SAS and SATA data
transfer rates of 1.5, 3, and 6Gb/s and incorporates enhanced features such as Spread Spectrum Clocking for EMI reduction and T-10 based
zoning as well as Phy-based zoning for network
storage security applications. Other featuressuch as Port Mirroring allow the customer to
access signals that are not easily accessible by
mirroring that signal to an external connection
for debug and diagnosis and the SATA affiliation
option of turning off all affiliations and allowing
multiple hosts to control various SATA drives.
The LSISAS2x36 provides a programmable
timer for SAS or SATA hard disk drive spin up
sequencing that also includes the ability to
program the number of hard disk drives that
can concurrently spin-up.
The LSISAS2x36 SAS expander provides large
storage environments the ability to connect
multiple targets and initiators through a
switched device for scalability and faulttolerant path-redundancy to improve system
reliability ideal for today’s data center and
storage subsystems.
A software development kit is available which
provides a baseline SES solution and can be
customized for unique solutions. The same
programming model can be used for the internal processor or an external SEP for seamless
customer migration.
A software development kit (SDK) is available
which provides the application programming
interface (API) functions and a baseline SES
solution enabling customers to create their
own unique firmware solutions. The same
programming model can be used for the internal processor or an external SEP for seamless
customer migration. Please contact your LSI
Sales Representative for more SDK details and
Third Party support.
