Product Overview



  • Flexible 24-port SAS Expander device
  • Virtual SSP target/initiator port
  • Low-latency connection arbitration
  • Supports table routing of 1024 entries, direct routing and subtractive routing
  • Integrated non-blocking cross bar switch allowing any-port to any-port connections
  • Arbitrary SAS wide port configurations
  • STP bridge function allows either SAS or SATA target devices to be attached to any port
  • Integrated RISC processor for SAS SMP functions and SES support
  • Three configurable multi-master or slave mode TWI interfaces for device configuration and control of external interfaces
  • UART interface for debugging support
  • SFF-8485 compliant Serial GPIO (SGPIO) interface provides expansion for up to 144 GPIOs
  • Typical Applications include:

    • SAS/SATA Storage Enclosure
    • SAS Fanout Expander

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    Product Brief
          Version Issue Date
      PDF Document PM2319-KIT/PM2422-KIT SXP 36x3G and SXP 24x3G Evaluation Kit Product Brief [102 KB] PMC-2041345 2 2007-10-19
      PDF Document PM8388 SXP 24x3G 24-Port SAS Expander Short Form Data Sheet [62 KB] PMC-2041219 2 2005-05-24
    Application Note
          Version Issue Date
    Locked PDF Document SIGNAL INTEGRITY FOR PMC-SIERRA 3.125/2.488/1.5GBPS LINKS [452 KB] PMC-2010750 3 2002-07-31
          Version Issue Date
    Locked Compressed Document PM8388 SXP 24x3G 352 CSBGA CAD Symbols and Footprints [473 KB] PMC-2041671 1 2004-09-22