Hardware User's Guide

22 Intel® RAID Controller RS25AB080 Hardware User’s Guide
I2C Connector Pin-Out
Table 4. I2C Connector Pin-Out
PCI Interface
The Intel
®
RAID Controller RS25AB080 must be installed into a standard x8 or larger
PCI Express* slot that complies with the PCI Express Specification, Revision 3.0. The
controller is backward-compatible with PCI Express* 1.0/2.0 and with x8 or larger slots
that are wired with x1, x2, and x4 PCI Express* lanes.
LED Headers
There are 3 2-pin right angled headers present on the board and these headers are used for
connection to external LED which indicate activity on any of the connected HDDs,
indicate fault on any of the connected HDDs and to indicate a pending write command.
Table 5. LED Headers Pin-out
19 BBSTROBE Battery Backup Strobe
20 BBSTATUS Battery Backup Status
Pin # Name Description
Pin Number Description
1 SMB_SAS_SES_SDA
2 GND
3 SMB_SAS_SES_SCL
HDD Activity Header (J1A4) HDD Fault Header (J1A1) Write Pending Header (J1A2)
Pin # Name Description Name Description Name Description
1 D_ACTIVE_PU 330? to
P3V3_DUAL
GFAULT_PU 330? to
P3V3_DUAL
DIRTY_PU 330? to
P3V3_DUAL
2 D_ACTIVE_N Connected to
Drain of
onboard MFT
GFAULT Connected to Drain
of onboard MFT
DIRTY Connected to
Drain of onboard
MFT