SAS3508 Datasheet, PDF (1/3 Pages) Broadcom Corporation. – SAS3508 Tri-Mode ROC

Product Brief
Applications
• Direct attached SAS/SATA/PCIe
ROC solutions for server and
storage Applications
• SAS RAID host bus adapter
• Cost effective, single chip
solution for entry-level RAID
storage systems supporting up to
8 direct-attach drives
• Storage processor option for
external storage applications
• Utilize PCIe attached SSDs with
confidence of industry leading
device management and error
recovery 

Key Features
• High performance IOP
• Dual core ARM A15
––32 KB L1 I/D Caches
––1 MB shared L2 Cache
––6 MB On Chip Memory
SAS3508 Tri-Mode ROC
PCIe to 8-port SAS/SATA/PCIe ROC
featuring Tri-Mode SerDes Technology
Extending RAID and SAS Technology Leadership,
Broadcom Introduces 8-port Tri-Mode SAS/SATA/
PCIe RAID-on-Chip (ROCs)
Broadcom Storage
Broadcom products serve four primary target markets: wireless
communications, wired infrastructure, enterprise storage, and industrial.
Broadcom Storage offers the industry’s broadest portfolio of storage
solutions, backed by decades of experience and trusted by the world’s
leading server and storage suppliers. Broadcom provides the building
blocks for storage solutions that help customers understand, prioritize,
store and protect critical data. The 12 Gb/s SAS portfolio includes
MegaRAID® controller cards, Host Bus Adapters (HBAs), Advanced
Software Options, Syncro® shared DAS solutions and SAS storage ICs,
including RAID-on-Chip (ROCs), I/O controllers and expanders.
Overview
The SAS3508 is the fifth generation of Serial Attached SCSI (SAS) RAID-
on-Chip (ROCs) based on the industry-leading Fusion-MPT (Message
Passing Technology) architecture. The SAS3508 host interface supports
8 PCI Express (PCIe) lanes and complies with the PCIe 3.1 specification
that extends the PCIe data rates up to 8.0 GT/s per lane, and is backwards
compatible to 5.0/2.5 GT/s. It also incorporates Single Root I/O
Virtualization (SR-IOV) with 16 virtual functions, End-to-End CRC (ECRC)
with Advanced Error Reporting (AER) lane and polarity reversal, power
management, hot plug support, and MSI/ MSI-X and legacy interrupt
generation.
Tri-Mode SerDes Technology enables seamless operation of PCIe, SAS,
or SATA storage devices in a single drive bay. The introduction of PCIe
devices executing NVMe command sets to the existing SAS/SATA
infrastructure makes industry standard hot-pluggable drive bays even more
versatile. The eight-port Tri-Mode ROC device interface provides SAS data
transfer rates of 12, 6, and 3 Gb/s per lane, or SATA at 6 and 3 Gb/s data
transfer rates per lane, or PCIe data transfer rates of 8, 5, and 2.5 Gb/s. The
device automatically negotiates between the speeds and protocols. T-10
Data Protection Model T-10 End to End Data Protection (EEDP) for early
detection of and recovery from data corruption, and Spread Spectrum
Clocking (SSC) for EMI reduction are supported. Additional features
include SAS 2.1 power management and DataBolt Technology allowing
users to take advantage of 12 Gb/s speeds while utilizing existing 6 Gb/s
drives and backplanes.
SAS3508 Tri-Mode ROC