• Offers an advanced LED and GPIO interface that provides serial and parallel GPIO capabilities:
— Provides a Serial General-Purpose I/O (SGPIO) interface for remote status indications
— Provides 11 independent GPIO signals
— Provides 72 independent LED signals and two internal port activity indicator signals that can be used as GPIOs
— Provides LEDs that support drive activity, fault, and status indications
Provides programmable Tx and Rx signal polarity for optimization of board routing
Provides configurable drive spin-up sequencing on a per-phy basis
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• Provides a scalable interface that supports up to 1024 SAS addresses through multiple expanders
— The I2C interface to the external SEP provides a backwards-compatible interface to an optional external SEP
— All four I2C interfaces can be configured for general-purpose use
— The ARM926 processor can access all four I2C interfaces
•Provides debug capability via either EPP, Serial, or direct 8-bit CPU interface
•Provides external memory support for Flash, NVRAM and PSBRAM
Flash ROM
An 8-MB CFI-compliant flash ROM is used to accommodate expander card firmware.
Diagnostic Components
LED Placement and Function
The Intel® RAID Expander Card RES2SV240 contains the following LEDs:
•One surface-mounted SXP_ACTIVE (“DS3B1”) LED (Green Color) to indicate activity of the internal Sxp port operating in any of the supported protocol modes.
•Another surface-mounted EXP_ACTIVE (“DS3B2”) LED (Green Color) to indicate activity on the internal SMP or SSP target ports which advertise the Expander’s WWN address.
SAS/SATA Connectors
The Intel® RAID Expander Card RES2SV240 provides six internal SFF8087 SAS/SATA signal connectors. Each SFF8087 connector provides support for four SAS/SATA ports. The sideband signals are configured to adhere to the SFF-8485 Specifications for SGPIO support.
14 | Intel® RAID Expander Card RES2SV240 Hardware User’s Guide |
