Generation II Enhanced 6.0Gbps 44-PHY SAS Expander

The MAX72044B is a next-generation enhanced 44-PHY, serial-attached SCSI-2 (SAS-2)-compatible expander that operates at 1.5Gbps, 3.0Gbps, and 6.0Gbps (on a PHY-by-PHY basis). This device is used for server and enclosure applications for midrange- and enterprise-storage systems requiring active SAS port expansion.

This device offers an evolutionary upgrade path for systems that currently employ parallel SCSI technology and rely heavily on SCSI-centric software or management solutions. By combining industry-leading I/O, embedded enclosure functions, and a high-performance internal switching architecture, this device provides all the features needed to design, develop, and deploy high-performance SAS storage solutions.

Applications

* Enterprise-Storage Environments * Fabric-Attached Storage (FAS) Systems * Fixed-Content Storage Systems * JBOD Arrays * Near-Line Storage-Replacement Systems * Network-Attached Storage (NAS) Systems * Rack-Mounted Servers with RAID * Storage-Area Network (SAN) Appliances

* 1.5Gbps, 3.0Gbps, and 6.0Gbps 44-PHY, Self-Configuring SAS Expander

* ANSI T10 SAS-2.1/SAS Protocol Layer (SPL) Compliant

* Automatic Input-Signal Equalization Including Decision Feedback Equalization (DFE)

* Multiple Programmable Output-Deemphasis Levels

* Multiple Programmable Output-Voltage Levels

* Embedded Multicontext MIPS® 4KEc® 32-Bit Microprocessor Used for Local Control and Expander or Vendor-Unique Enclosure Management Functions

* On-Chip Trace Buffer

* Internal ECC-Protected User Data SRAM

* Standard EJTAG Processor Debug Interface

* Software Compatible with Other Maxim Enclosure Management Processors

* Two Operating Modes for External Program Memory: Parallel Memory and Serial Peripheral Interface (SPI™) Memory

* SPI Interface for Accessing an External Serial Flash Memory Device with Optional Dual/Quad I/O SPI Support

* Auxiliary SPI Port for Access to Peripheral SPI Devices (Manual Access Only)

* Integrated PHY Snooping on Multiple Channels

* Flexible SAS-2 Compliant Address-Based Zoning

* Supports Table Routing to Destination Addresses

* Supports SAS-2 Table-to-Table Routing

* SMP and SSP Virtual PHY Target/Initiator Capability

* STP/SATA Bridging Supporting Multiple Affiliations (One Per PHY)

* STP Initiator Capability

* SAS-2.1/SPL Optical Link Mode

* SAS-2.1/SPL Power Management

* LPC Interface for Trusted Platform Modules

* Unlimited Variable Wide-Port Capability

* Extensive Diagnostic and Built-In Self-Test (BIST) Capabilities

* Multimaster I²C Interfaces—I²C High-Speed and 10-Bit Device ID Support

* Multirate UARTs with Modem Control

* 10/100 Ethernet Media-Access Controllers (MACs) with Reduced Media-Independent Interface (RMII)

* Flexible General-Purpose Input/Output (GPIO) for LEDs, Fan Tachometer, and Other Functions

* Quad SFF-8485 Serial I/O Support

* Analog-to-Digital Converters (ADCs)

* Digital Temperature Monitor

* 75MHz or 150MHz LVTTL/LVPECL Reference Clock

* 1.0V DC, 1.8V DC, and 3.3V DC External Power Supplies

* Low Power CMOS

* 40mm x 40mm, 1229-Ball FCBGA Package with Heat Spreader (1.0mm Pin Pitch)

* RoHS-Compliant Package