
SiI3726 SATA Port Multiplier
Data Sheet
Overview
Silicon Image, Inc.
2006 Silicon Image, Inc.
SiI-DS-0121-C1
6
Description
Silicon Images SiI 3726 SATA Port Multiplier is 1-to-5 SATA Port Multiplier designed to provide a high performance
link between a single SATA host port and five SATA device ports. With its unique data aggregation capability and
3 Gbps serial link capability, the SiI 3726 SATA Port Multiplier is able to take full advantage of 3 Gbps host link
bandwidth and FIS-based switching host controllers by bundling together data from device ports and sending it
over the 3 Gbps host link. Additionally, the feature-rich SiI 3726 supports all the port multiplier related SATA II
extensions allowing system designers to exploit the full potential of SATA in their storage solutions.
The SiI 3726 SATA Port Multiplier supports host and device link rates of 1.5 Gbps and 3 Gbps with auto-
negotiation allowing system designers to utilize 3 Gbps host links with today’s 1.5 Gbps hard drives, and to future-
proof designs for the emergence of 3 Gbps SATA hard drives. Additionally, the SiI 3726 contains a SATA
Enclosure Management Bridge (SEMB) to pass in-band enclosure management information between the host
and an enclosure management device. Other important features include, programmable high drive capability for
backplane and external applications, asynchronous notification to eliminate the need for host polling to determine
if a device has been added or removed, and hot plug support.
The SiI 3726 is designed for optimum power, performance and price. It is based on Silicon Images industry
leading SATALink technology. It leverages much of the circuit innovation at the physical layer of Silicon Image’s
proprietary reduced-overhead Multi-layer Serial Link (MSLTM) architecture, which was pioneered and proven with
our market-leading PanelLink
products. Silicon Image has shipped over 35 million units of PanelLink
products
for host systems and displays in the PC and the CE markets, notable for their noisy operating conditions.
Features
Overall Features
One-to-five native SATA Port Multiplier
Full support for FIS-based switching and command-based switching SATA host controllers
Advanced data aggregation architecture for ultra-fast read and write operations with FIS-based switching
controllers
21mm x 21mm, 364 pin BGA package with a 20 x 20 array of balls
High-speed, native SATA connections to host and device
Host and device status and activity LEDs
Robust, High Performance PHY Technology
1.5 Gbps and 3.0 Gbps PHY support with auto-negotiation
Compliant with SATA II external PHY specifications
Independently programmable PHY settings to support extended PCB trace lengths and external SATA
applications
Industry proven SATALink technology
Storage System Features
Hot-plug and ATAPI support
SATA Enclosure Management Bridge (SEMB) support with I
2
C interface to the external Storage Enclosure
Processor (SEP)
Far-end Re-timed loop-back BIST for host initiated system testing
Supports host control of hard disk drive staggered spin-up
Asynchronous notification support
Architecture Features
Features independent 8 kByte FIFO per device serial ATA channel for reads and writes
High performance data movement between all SATA ports