Main Board Intel® Server System S7000FC4UR TPS
Revision 1.0
Intel order number E18291-001
16
Note: FBD reference clock routing requires clock-to-clock length matching between FBD agents
that are directly connected to each other (i.e. MCH-DIMM1, DIMM1-DIMM2, etc) to within five
inches.
PCI-Express* SRC does not have any clock-to-clock length matching requirements.
2.2.9.4.4 Memory DB1900G* Gear Ratio Configuration
During memory initialization, BIOS reads the DIMM SPD (Serial Presence Detect) PROMs to
gather critical information concerning the DIMM itself. Among this information is the DIMM's
supported speed.
Once the speed of the memory is determined, it is checked against that of the processor host
clock speed. Recognizing the host clock speed, BIOS then configures the appropriate ratios
using a gear ratio look up table to ultimately provide the correct memory clock speed.
2.2.10 Serial-ATA (SATA) Sub-system
The Enterprise Southbridge 2 provides six Serial-ATA (SATA) interface with a transfer rate of up
to 3.0GB/s. The main board has two internal industry standard 7-pin vertical SATA connectors,
which can be cabled directly to a SATA device.
As an alternative to using a SAS Riser to support eight SAS drives, an internal x4 SFF 8087
SAS/SATA connector is provided to cable to the SAS Backplane to support 4 SATA drives.
SATA cables should be one meter (40 inches) or less in length.
2.2.10.1 Enterprise Southbridge 2 Port Configuration
The Enterprise Southbridge 2 Port configuration is as follows:
SATA0 -> SATA connector1 (goes to SATA-to-PATA converter board, then to optical
drive)
SATA1 -> x4 connector Port0 (goes to SATA Drive 0 on SAS BP)
SATA2 -> x4 connector Port1 (goes to SATA Drive 1 on SAS BP)
SATA3 -> x4 connector Port2 (goes to SATA Drive 2 on SAS BP)
SATA4 -> x4 connector Port3 (goes to SATA Drive 3 on SAS BP)
SATA5 -> SATA connector2 (extra port, could potentially be used for a SATA Tape
Drive)
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