Intel SE7501BR2 - Server Board Motherboard Product Manual page 13

P64H2 I/O Hub
The primary role of the P64H2 is to provide an integrated I/O bridge to the 64-bit PCI-X segments.
This subsystem supports two independent 64-bit PCI-X segments, each with two 64-bit/100MHz
PCI-X slots. The Adaptec AIC-7901 embedded controller is enabled via one of the PCI-X
segments of the P64H2.
ICH3 I/O Controller Hub
The primary role of the ICH3 is to provide the gateway to all PC-compatible I/O devices and
features. The SE7501BR2 uses the following ICH3 features:
32-bit/33 MHz PCI bus interface
Low Pin Count (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
General purpose I/O
System RTC
Super I/O
The National Semiconductor
ACPI-Compliant Controller/Extender is used on the SE7501BR2 server board. This device
provides the system with:
Two serial ports
One parallel port
Floppy disk controller (FDC)
†
PS/2 -compatible keyboard and mouse controller
Wake event control
Serial Ports
One DB9 connector is provided on the back panel for the Serial A port. The Serial A port is
compatible with 16550A and 16450 modes. This port can be set to one of four different
COM ports, each of which can be enabled separately. When enabled, each port can be programmed
to generate edge- or level-sensitive interrupts. When disabled, the serial port interrupts are
available for add-in cards.
A DH10 10-pin serial header is available on the baseboard for an optional Serial B port. The
Serial B port can be used as an Emergency Management Port.
Parallel Port
The SE7501BR2 baseboard provides a 25-pin parallel port back panel connector. The Super I/O
provides an IEEE 1284-compliant 25-pin bi-directional parallel port. BIOS programming of the
Super I/O registers enables the parallel port and determines the port address and interrupt. When
disabled, the interrupt is available to add-in cards.
Description
†
PC87417 Super I/O Plug-and-Play Compatible with
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