Intel STL2 - Manual (Page 23)

STL2 Server Board TPS STL2 Server Board Architecture Overview
Revision 1.0 2-15
2.4.2.3.3 USB Interface
The IB6566 South Bridge contains a USB controller and USB hub. The USB controller moves
data between main memory and the two USB connectors provided.
The STL2 server board provides a dual external USB connector interface. Both ports function
identically and with the same bandwidth.
The external connector is defined by Revision 1.0 of
the USB Specification.
2.4.2.4 Compatibility Interrupt Control
The IB6566 South Bridge provides the functionality of two 82C59 Programmable Interrupt
Controller (PIC) devices, for ISA-compatible interrupt handling.
2.4.2.5 APIC
The IB6566 South Bridge integrates a 16-entry I/O APIC that is used to distribute 16 PCI
interrupts. It also includes an additional 16-entry I/O APIC for distribution of legacy ISA
interrupts.
2.4.2.6 Power Management
One of the embedded functions of IB6566 South Bridge is a power management controller.
The STL2 server board uses this to implement ACPI-compliant power management features.
STL2 supports sleep states s0, s1, s4, and s5.
2.5 Chipset Support Components
2.5.1 Legacy I/O (Super I/O) National* PC97317VUL
The National* PC97317VUL Super I/O Plug-and-Play Compatible with ACPI-Compliant
Controller/Extender is used on the STL2 server board. This device provides the system with:
•
Real-time Clock (RTC)
•
Two serial ports
•
One parallel port
•
Floppy disk controller (FDC)
•
PS/2-compatible keyboard and mouse controller
•
General purpose I/O pins
•
Plug-and-Play functions
• A power management controller
The STL2 server board provides the connector interface for the floppy, dual serial ports,
parallel port, PS/2 mouse and the PS/2 keyboard. Upon reset, the SIO reads the values on
strapping pins to determine the boot-up address configuration.