Product Brief
SAS35xR Series
of Expanders
Power-Optimized, Entry-Level Avago 12 Gb/s
SAS/SATA SAS35x36R, SAS35x28R, SAS35x24R
Expanders
The industry’s most trusted SATA+SAS expanders
enable space-constrained enterprise systems with the
scalability and fault tolerance they demand.
Broadcom 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 Avago 12 Gb/s SAS portfolio includes MegaRAID® controller cards, host
bus adapters (HBAs), advanced software options, and SAS storage ICs,
including RAID-on-Chip (ROCs), I/O controllers and expanders.
Applications
• SAS/SATA drive enclosures
• External RAID subsystems
• JBOD architectures
• Server backplanes
Overview
The SAS35xR expanders are the second series of high performance 12 Gb/s
SAS expanders that utilize a new, power-optimized design to deliver best in
class power utilization and the latest enhancements in SAS technology. The
36-, 28- and 24-port expanders offer a smaller footprint and are equipped
with an integrated ARM Cortex-R4 processor for system initialization,
LED management, enclosure management, and topology management
functions such as discovery. The SAS35xR expanders support end device
SAS data transfer rates of 12, 6, 3 Gb/s, and SATA data transfer rates of 6
and 3 Gb/s.
Representing the eighth generation of SAS expanders, the SAS35xR series
adds a suite of enhanced power management features encompassing the
ability to create vendor-unique SMP or SES commands. Firmware features
include:
• SAS PHY Power Conditions
• Partial and Slumber Power Management
• Wake-In-Band and Enter/Exit Chip Wide-Low Power modes.
Key Features
• Integrated enclosure processor
– ARM Cortex-R4 @ 300 MHz
• 12 Gb/s SAS interface
– 36-, 28-, 24-port SAS/SATA
expanders
– Supports 12 Gb/s, 6 Gb/s, and
3 Gb/s SAS, and 6 Gb/s and
3 Gb/s SATA data transfer rates
– Ports are non-denominational -
initiator and target connect
– Supports narrow and wide port
configurations
– Spread Spectrum Clocking
– Supports SSP initiator and
target, SMP initiator and target,
STP initiator and SATA protocols
– DataBolt Bandwidth Optimizer
(all ports)
SAS35xR Series of Expanders
Product Brief
Key Features (cont.)
• T-10 zoning – 255 zones
• Port mirroring
• 16 GPIO Pins (64 total, including
multiplexed GPIOs)
• 1 LED Pin per PHY
– Configurable for link status, drive
activity, fault LED outputs
– Can be used as GPIOs
The innovative and unique DataBolt bandwidth optimizer is carried forward
from the prior generation expander and enhanced to provide robust
12 Gb/s performance while preserving prior investments in SAS and SATA
devices. By buffering data received at 6 or 3 Gb/s rates and bursting to
the host at 12 Gb/s speeds, the SAS35xR expanders with the DataBolt
technology cost-effectively ease the transition to 12 Gb/s SAS technology
and extend the longevity of the existing infrastructure.
The SAS35xR expanders support scalability and the fault-tolerant path
redundancy needed by today’s data centers, enterprise servers and storage
subsystems. While connecting multiple targets and hosts in a switched SAS
environment, the SAS35xR expanders improve system performance and
reliability in feature-rich, power-efficient and industry-trusted offerings.
SDK
The comprehensive Avago SAS35 Software Development Kit (SDK) is
available to facilitate efficient OEM specific firmware implementations. The
SDK includes source code for the SES module with examples of typical SES
device drivers as well as the SSP Target, the I²C Target, the CLI Interface,
and the Serial Debug port. API support for Hardware Abstraction Layer
(HAL) functions is included, covering SSP and SMP Target and Initiator, STP
Initiator, UART, I²C Master and Slave, LED management for both GPIO and
SGPIO, Configuration Page Management, PHY configuration and control,
firmware event logging, firmware tracing and more.
• SFF-8485 Compliant
(2 SGPIO ports)
• External memory interface sup-
port
• Communication Interfaces
– Five I2C interfaces for enclosure
management services or debug
– Two UART interfaces for debug
as well as an out of band
communication port
RAID
Controller
4
4
24-Drive
RAID/JBOD
RAID
Controller
4
4
• JTAG support
• 28nm, FPB4NGS, 27 mm x 27 mm
Avago
SAS35x36R
Avago
SAS35x36R
Up to 24 SAS/SATA Drives
4
4
Enclosure Functions
•
•
•
•
•
•
LED Control
Temp Monitoring
Drive/Array Control
Fan Control/Monitor
Power Supply Control/Monitor
Alarms/Notifications
Product Brief
SAS35X36R, SAS35X28R, SAS35X24R Expander Technical Specifications
SEP
Instructions
Internal Memory
SAS Ports
Data Transfer
DataBolt Bandwidth Optimizer (EDFB)
SSC (Spread Spectrum Clocking )
Port Mirroring
Direct, Table, & Subtractive Routing Methods
Route Table Entries
PHY Based Zoning, T-10 Zoning
T-10 Optical Support
A/D Converter
Pulse Width Modulator
External Memory Interfaces
Security Features
8-bit SEP interface
I
2
C Interfaces
SGPIO interface
UART Interfaces
LED
GPIO
Package
ARM Cortex R4 300 MHz
1.6 DMIPs/MHz
2 MB SRAM
36, 28, 24
12.0/6.0/3.0 Gb/s SAS 6.0/3.0 Gb/s SATA
All ports (LSI IP)
Y
Y (LSI IP)
Y
2048
Y
Y
1, (2 analog inputs)
2
8/16-bit Flash, with 6 chip selects SRAM, NVSRAM
TRNG/Hash & HMAC Generator/Secret Root Key
Y
5
2, SFF- 8485
2
1 LED pin per PHY
16
28n, FPB4NGS, (27 mm x 27 mm)
Ordering Information
Product
SAS35x36R
SAS35x28R
SAS35x24R
OPN
SX03-0B00-00
SX04-0B00-00
SX05-0B00-00
Visit the Broadcom Server Storage website at:
avagotech.com/server-storage
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subsidiaries. For more information, please visit
www.broadcom.com.
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