Ich3-S - Intel SE7500CW2 Technical Product Specification

SE7500CW2 Server Board Technical Product Specification
the HI and the two 64-bit PCI-X I/O segments. The HI interface can support 1 GB/s of data
bandwidth.
3.2.3.1 PCI Bus P64-B I/O Subsystem
P64-B supports the following embedded devices and connectors:
•
Two 184-pin, 3.3-volt keyed, 64-bit PCI expansion slot connectors running at 100MHz.
Both slots support 184-pin, 3.3V keyed, 64-bit PCI-X expansion slots. Both slots support
full-length PCI add-in cards.
BIOS is responsible for setting the bus speed of P64-B. The bus speed will always be set up to
run 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 133MHz.
This slot is capable of supporting a full length add-in PCI card.
•
This expansion slot can be used for riser card, should this board be integrated into a high
density chassis. The slot is designed to support up to 3 PCI slots on the riser, however
actual number of slots and slot speeds will be determined by the signal integrity of the
riser card used.
BIOS is responsible for setting the bus speed of P64-C. The bus speed will always be set up to
run at the speed of the slowest card installed.
3.2.4

ICH3-S

The ICH3-S 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 ICH3-S 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.
On the Intel Server Board SE7500CW2, the primary role of the ICH3-S is to provide the gateway
to all PC-compatible I/O devices and features. The Intel Server Board SE7500CW2 uses the
following ICH3-S features:
•
32-bit PCI bus interface
•
16-bit LPC bus interface
•
IDE interface, with Ultra DMA 100 capability
•
Universal Serial Bus (USB) interface
•
PC-compatible timer/counter and DMA controllers
•
APIC and 8259 interrupt controller
•
Power management
•
System RTC
•
General purpose I/O
The following are the descriptions of how each supported feature is used on Intel Server Board
SE7500CW2.
13
Revision 1.40
Functional Architecture