Intel RES2SV240 Computer Hardware User Manual


 
14 Intel® RAID Expander Card RES2SV240 Hardware User’s Guide
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 configurable drive spin-up sequencing on a per-phy basis
Provides programmable Tx and Rx signal polarity for optimization of board routing
Provides a scalable interface that supports up to 1024 SAS addresses through
multiple expanders
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 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.