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Intel® Server Board SE7501WV2 TPS Functional Architecture
Revision 1.0
Intel reference number C25653-001
29
3.2.3 P64H2
The P64H2 is a 567-ball FCBGA device and provides an integrated I/O bridge that provides a
high-performance data flow path between the HI 2.0 and the 64-bit I/O subsystem. This
subsystem supports peer 64-bit PCI-X segments. Because it has two PCI interfaces, the P64H2
can provide large and efficient I/O configurations. The P64H2 functions as the bridge between
the HI and the two 64-bit PCI-X I/O segments. The HI can support 1 GB/s of data bandwidth.
3.2.3.1 PCI Bus P64-B I/O Subsystem
The P64-B supports the following embedded devices and connectors:
• One 184-pin, 5-volt keyed, 64-bit PCI expansion slot connector. The expansion slot can
be used for either a 1-slot or a 3-slot PCI riser card. Both riser cards support 184-pin,
3.3V keyed, 64-bit PCI expansion slots. The PCI slots on the P64-B PCI bus support
both full-length PCI cards and low profile PCI cards with the appropriate faceplate.
• One Intel
®
82546EB dual channel 10/100/1000 Ethernet controller.
The BIOS is responsible for setting the bus speed of the P64-B. The following tables show the
bus frequency according to slot population. The bus speed will always be set up to run at the
speed of the slowest card installed.
Table 4. P64-B Speeds
Configuration
Intel
®
Server ChassisSR1300
(Bus B with Anvik* Dual NIC
down and 1 Slot Riser)
Intel
®
Server Chassis SR2300
(Bus B with Anvik* Dual NIC
down and 3 Slot Riser)
0 Adapter Cards installed and
on board device enabled
PCI-X 64/100 PCI-X 64/100
1 Adapter Cards installed and
on board device enabled
PCI-X 64/100 PCI-X 64/100
2 Adapter Cards installed and
on board device enabled
N/A PCI-X 64/100
3 Adapter Cards installed and
on board device enabled
N/A PCI-X 64/66
1 Adapter Cards installed and
on board device disabled
PCI-X 64/100 PCI-X 64/100
2 Adapter Cards installed and
on board device disabled
N/A PCI-X 64/100
3 Adapter Cards installed and
on board device disabled
N/A PCI-X 64/66
3.2.3.2 PCI Bus P64-C I/O Subsystem
P64-C supports the following embedded devices and connectors:
• One 184-pin, 5-volt keyed, 64-bit PCI expansion slot connector. The expansion slot can
be used for either a 1-slot or a 3-slot PCI riser card. Both riser cards support 184-pin,
3.3V keyed, 64-bit PCI expansion slots. The PCI slots on the P64-C PCI bus support
only low profile PCI cards.
• One Adaptec* 7902 dual channel U-320 SCSI controller.