Datasheet

24 Intel
®
815E Scalable Performance Board Development Kit Manual
Theory of Operation
• System DRAM controller
— Three DIMM slots
— 100/133 MHz clock
• Accelerated hub architecture
• Digital video out port
• AGP 1X/2X/4X port
3.4.3.2 I/O Controller Hub (ICH2)
The Intel 82801BA I/O Controller Hub (ICH2) is a highly integrated multifunctional I/O controller
hub that provides the interface to the PCI bus and integrates many of the functions needed in
today’s PC platforms. The ICH2 communicates with the host controller over a dedicated hub
interface.
ICH2 Features:
• PCI 2.2 with six PCI REQ/GNT pairs
• Eight PCI interrupts
• AC’97 2.1 with six channel audio support
• LPC interface
• Wake-On-LAN support
• System management
• 21 GPIO signals
• Interrupt controller
• 82C54-based timer
• ACPI compliant
• RTC
• 360 eBGA package
• Four IDE @ ATA 100 max
• Two USB 1.1 controllers providing four ports
• Enhanced SMBus with slave interface
• Integrated MAC
3.4.3.3 Firmware Hub (FWH)
The Firmware Hub (FWH) stores system BIOS and video BIOS, as well as an Intel
®
Random
Number Generator (RNG). The Intel RNG provides truly random numbers to enable stronger
encryption, digital signing and security protocols. The FWH is key to enabling future security and
manageability infrastructures.
FWH Features:
• 32-pin PLCC package
• 8-Mbit flash memory