Reference Design Schematics:
Dual-Processor
B.1
Reference Design Feature Set
The reference schematics feature the following core feature set:
®
•
Intel
— Memory Controller Hub (MCH)
— I/O Controller Hub (ICH)
— FWH Flash BIOS interface
•
Support for the two Pentium III (SC242) Processors
— 100/133 MHz System Bus Frequency
— Debug Port
•
IOAPIC Integrated into the ICH
•
Direct RDRAM Memory Interface
— 266 MHz, 300 MHz, 356 MHz and 400 MHz Direct RDRAM Support
— 2 RIMM Sockets
•
4 PCI Add-in Slots
— Via 4 REQ/GNT pairs (ICH supports 6 REQ#/GNT# pairs)
•
AGP Universal Connector
— 3.3V - 1X,2X signaling
— 1.5V – 1X, 2X, 4X signaling
•
2 IDE Connectors with Ultra ATA/66 Support
•
2 USB Connectors
•
ATX Power Connector
•
LPC Ultra I/O
— Floppy Disk Controller
— 1 Parallel Port, 2 Serial Ports
— Keyboard Controller
•
AC'97 Bus Connector and Audio Codec
•
WfM Support
•
Integrated System Management
•
Integrated Power Management
— ACPI Rev. 1.0 Compliant
— APM Rev. 1.2 Compliant
•
Pentium III on-board VRM 8.4 compliant regulator
•
4 Layer Design
®
Intel
820 Chipset Design Guide
820 Chipset
Reference Design Schematics: Dual-Processor
B
B-1