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Functional Architecture
Intel® Server Board S5500WB TPS
26
Revision 1.9
Intel order number E53971-008
Figure 18. Mirroring Memory Configuration
3.4.10
Memory Error LED
Each DIMM is allocated an LED that, when lit, indicates a memory DIMM failure. It is the
function of the BIOS to identify bad DIMMs during the boot process. The BIOS sends a
message to the BMC to indicate which DIMM LED needs turn on.
3.5
Intel
®
5500 Chipset IOH
The Intel
®
5500 Chipset component is an I/O Hub (IOH). The Intel
®
5500 Chipset provides a
connection point between various I/O components and Intel processors using the Intel
®
QPI
interface.
The Intel
®
5500 Chipset IOH is capable of interfacing with up to 24 PCI Express* lanes, which
can be configured in various combinations of x4, x8, x16 and limited x2 and x1 devices.
The Intel
®
5500 Chipset IOH is responsible for providing a path to the legacy bridge. In addition,
the Intel
®
5500 Chipset supports a x4 DMI (Direct Media Interface) link interface for the legacy
bridge and interfaces with other devices through SMBus, Controller Link, and RMII (Reduced
Media Independent Interface) manageability interfaces. The Intel
®
5500 Chipset supports the
following features and technologies:
Intel
®
QuickPath Interconnect (Intel
®
QPI)
PCI Express* Gen2
Intel
®
Virtualization Technology (Intel
®
VT) for Directed I/O 2 (Intel
®
VT-D2)
Manageability Engine (ME) subsystem
3.5.1
IOH24D PCI Express*
PCI Express* Gen1 and Gen2 are dual-simplex, point-to point serial differential low-voltage
interconnects. The signaling bit rate is 2.5 Gb/s one direction per lane for Gen1 and 5.0 Gb/s
one direction per lane for Gen2. Each port consists of a transmitter and receiver pair. A link
between the ports of two devices is a collection of lanes (x1, x2, x4, x8, x16, and so forth). All
lanes within a port must transmit data using the same frequency. The following table lists the
usage of the IOH24D PCI Express* bus segments.
Содержание S5500WB
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