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Functional Architecture
Intel® Server Board SE7505VB2
3.2.2.1
AGP 8X Bus
The AGP 8X bus features include the following:
Single AGP device
AGP interface asynchronously coupled to core
AGP 3.0 specification compliant
AGP 8X / 4X / 2X at 1.5V
0.8V and 1.5V AGP electrical. No 3.3V support
Isochronous support for AGP 8X, non-snooped
32 deep AGP request queue
32-bit upstream address support for inbound AGP and PCI cycles
32-bit downstream address support for outbound PCI and fast write cycles
3.2.3 P64H2
The P64H2 is a 567-ball FC-BGA device that provides an integrated I/O bridge for a high-
performance data flow path between the HI 2.0 bus 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 2.0 interface and the two 64-bit PCI-X I/O segments. The HI interface can support 1GB/s
of data bandwidth.
3.2.3.1
PCI Bus P64-B I/O Subsystem
P64-B supports two 184-pin, 3.3-volt keyed, 64-bit PCI expansion slot connectors running at
100MHz. Both of the slots support 184-pin, 3.3V keyed, 64-bit PCI-X expansion cards. Both
slots support full-length PCI-X or PCI add-in cards.
The BIOS is responsible for setting the bus speed of P64-B. The bus speed runs at the speed of
the slowest card installed.
3.2.3.2
PCI Bus P64-C I/O Subsystem
P64-C supports the following embedded devices and connectors:
One 184-pin, 3.3-volt keyed, 64-bit PCI expansion slot connector running at 66MHz. This
slot is capable of supporting a full-length add-in PCI card
One integrated Intel
®
82540EM fast Ethernet gigabit (10/100/1000) controller
The BIOS is responsible for setting the bus speed of P64-C. The bus speed runs at the speed
of the slowest card installed.
3.2.4 ICH4
The ICH4 is a multi-function device, housed in a 421-pin BGA device, providing a HI 1.5 to PCI
bridge, a PCI IDE interface, a PCI USB controller, and a power management controller. Each
function within the ICH4 has its own set of configuration registers. Once configured, each
appears to the system as a distinct hardware controller sharing the same PCI bus interface.
Revision
1.2
Intel part number C32194-002
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