When 3Gb/s devices will meet your application needs, you can save costs with the LSI SASx12A Expander. Scalable to 144 SAS addresses, the LSI SAS12A supports value-add features including configurable HDD spin-up, SGPIO support for blink rates and patterns, and port independent auto-negotiation — just the level of functionality required for legacy-oriented cluster, SAN, and NAS environments. It is pin compatible and has the same programming model for an external SEP as the LSISASx12 .

  • Enable higher enclosure capacities through 12 PHY edge expansion
  • Provide high device throughput with SAS and SATA support up to 3Gb/s, including wide port support
  • Ensure ample enclosure bandwidth through integrated RAM and integrated processing
  • Supports 3.0 Gbit/s SAS and SATA connections
Storage Enclosure Processor (SEP) No
Internal Memory
SAS Ports
DataBolt Bandwidth Optimizer (EDFB)
Wide Port Support Yes
SSC (Spread Spectrum Clocking )
Port Mirroring
Direct, Table, & Subtractive Routing Methods Yes
Route Table Entries 144
PHY-Based Zoning, T-10 Zoning
T-10 Optical Support
A/D Converter
External Memory Interfaces
Security Features
Pulse Width Modulator
DDR Interface
8-bit SEP interface
I2C Interfaces Yes
SGPIO Interfaces
Ethernet Interface
Ethernet Management Ports
USB 2.0 Interfaces
UART Interfaces Yes
LED 4 GPIO’s per Phy
GPIO 4 pins
Package 472 EPBGA 27 mm x 27 mm
Data Transfer Rates SAS: 3.0/1.5 Gb/s SATA: 3.0/1.5 Gb/s
Product Brief (1)
Product Guide (1)