LSISASx36
36-Port, 3Gb/s SAS Expander
The LSISASx36 is a 36-port, 3Gb/s Serial Attached SCSI (SAS) expander with an integrated ARM processor for Enclosure Management and extended SAS SMP functions, and provides large storage environments the ability to connect multiple targets and initiators through a switched device for scalability and fault-tolerant path-redundancy to improve system reliability.
Features
- 36 fully-independent SAS and SATA ports
- SSP, SMP, STP and SATA protocol support
- SSP target and initiator
- SMP target and initiator
- STP target and initiator
- Supports 1.5 and 3Gb/s SAS and SATA data transfer rates
- Port independent auto-negotiation
- Ports are non-denominational
- Initiator or target connect
- Provides a low latency connection router with crossbar module to efficiently create and maintain connections
- Direct, subtractive decode, and table routing methodologies supported
- Provides a scalable interface that supports up to 1024 SAS addresses
- Supports wide and narrow port configurations
- Allows re-use of routing table resources across all of the phys composing a wide port
- Allows any number of phys for wide port support
- Phy-based zoning for system security
- SATA/SAS HDD spin-up sequencing, configurable on a per-phy basis
- SGPIO (SFF-8485) support provides additional data modulation for blink rates and blink patterns
- 8 GPIO pins
- 3 LEDs per phy
- Link status, drive activity, fault LEDs outputs
- Can be used as GPIOs
- Integrated ARM processor
- SEP functionality
- Drive management
- Extended SAS SMP functions
- Internal 8KB ROM can be used for boot options
- External interface support
- Flash or SRAM memory
- Flash for boot option
- SRAM for overflow ARM processor code
- EEPROM interface for nonvolatile storage of hardware configuration
- External EEPROM not needed if internal ROM is used for boot options
- Three I2C interfaces
- One I2C interface dedicated to communication with external SEP
- Two I2C interfaces for connecting external sensors
- UART support for serial debugging
- Supports JTAG testing
- Flash or SRAM memory
- Diagnostic capability
- Manufacturing utilities
- Integration utilities
- Individual phy power management
- 672 FPBGA package, 27 x 27 mm, 0.13um Gflx process technology
Benefits
- Common programming model for external SEP and internal processor for enclosure management
- Provides greater scalability and performance benefits for the next-generation, enterprise-class products
- Low risk mitigation
- Backward compatible external SEP interface with the SASx12 and SASx12A
- Leverages existing SCSI infrastructure for investment protection
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