Technical Product Specification

Table Of Contents
Intel
®
Server Board S5400SF TPS Functional Architecture
Revision 2.02
Intel order number: D92944-007
33
3.2.3.10.2 DIMM Fault Indicator LEDs
Intel
®
server boards have a fault-indicator LED next to each DIMM socket. The LEDs are turned
on when the FBDIMM on the adjacent DIMM socket is determined to be faulty.
The generic usage model for the DIMM Fault LEDs is as follows:
Table 11. DIMM Fault LED Behavior Summary
Error Event Mode of Operation Description
A FBDIMM fails Memory BIST during
POST.
N/A DIMM LED for the failing FBDIMM is
turned on.
Channel Intel
®
IBIST failure occurs
during POST.
N/A If there are multiple FBDIMMs on
that channel, all corresponding
failing DIMM LEDs are turned on.
Correctable error threshold reached for
a failing FBDIMM. (Ten correctable
errors occur on the same FBDIMM
within the limits of the error period.)
System is operating in the single-
channel mode.
DIMM fault LED for the failed
FBDIMM is turned on when the error
count reaches the threshold (i.e, on
the tenth error).
Correctable error threshold reached for
a failing FBDIMM. (Ten correctable
errors occur on the same FBDIMM
within the limits of the error period.)
System is operating in the dual-
channel mode.
DIMM fault LED for the failed
FBDIMM is turned on when the error
count reaches the threshold (i.e., on
the tenth error).
Uncorrectable error occurs on a
FBDIMM.
System is operating in the single-
channel mode.
DIMM fault LED for the failed
FBDIMM is turned on.
Uncorrectable error occurs on a
FBDIMM.
System is operating in the dual-
channel mode.
DIMM fault LEDs for the failed pair
of FBDIMMs are turned on.
Fatal channel link-level or FBD fatal
error occurs.
N/A DIMM fault LEDs of all FBDIMMs
present on the failing channel or
branch are turned on.
Note: As indicated in the preceding table, when two FBDIMMs are operating in lthe ock-stepped
mode and one of the FBDIMMs fails, the BIOS also lights the DIMM Fault LED of the
companion FBDIMM. This is because the BIOS cannot isolate failures at the individual FBDIMM
level in this mode.
3.3 Intel
®
6321ESB I/O Controller Hub
The Intel
®
6321ESB I/O Controller Hub is a multi-function device that provides four distinct
functions: an I/O Controller, a PCI-X Bridge, a Gigabit Ethernet Controller, and an Integrated
Baseboard Management Controller (Integrated BMC). Each function within the Intel
®
6321ESB
I/O Controller Hub has its own set of configuration registers. Once configured, each appears to
the system as a distinct hardware controller.
A primary role of the Intel
®
6321ESB I/O Controller Hub is to provide the gateway to all PC-
compatible I/O devices and features. The server board uses the following Intel
®
6321ESB I/O
Controller Hub features:
Six-channel SATA interface with SATA Busy LED Control
Dual GbE MAC
Integrated Baseboard Management Controller (Integrated BMC)
Single ATA interface, with Ultra DMA 100 capability
Universal Serial Bus (USB) 2.0 interface