User`s guide

Table Of Contents
Board Set Description 19
Main Board
The main board connection layout is displayed in Figure 17. The main board supports the
following features:
Two Intel Itanium 2 processor sockets and power pod sites
Eight 184-pin, DDR-SDRAM DIMM sockets
SNC-M (Scalable Node Controller) of the E8870 chip set
Four Memory Repeater Hubs – DDR (MRH-D) components of the E8870 chip set
One P64H2 PCI-X bridge component (to drive SCSI controller and NIC)
SCSI Ultra320 Controller
Network Interface Controller (NIC) 10/100/1000 Ethernet controller that provides two LAN
ports
One I/O Control Hub 4 (ICH4) component
Four USB 1.1 ports (two at the rear, two through the front panel)
One IDE bus routed through the flex cable to the front panel board supporting one
ATA33 master device
Low Pin Count (LPC) Super I/O* with one external serial port and an internal header for a
second port
Integrated ATI* Rage* XL video controller and memory with two video ports – one at the
rear and one through the front panel. The front panel video port supports resolutions up to
800x600.
8-MB Flash using four Firmware Hub (FWH) components
Two VHDM connectors for PCI riser board
One retention mechanism for processors and power pods
In-Target Probe (ITP) port
200 MHz Front Side Bus (FSB)
Four 400-MHz Rambus channels for memory interface
Core ratio programming via the SNC-M
Server management logic support
Joint Test Action Group (JTAG) / boundary scan support through ITP or external source
Clock buffering
Six I
2
C system management buses (SMBus)
Embedded D2D converters
BMC server management controller
Power control - Advanced Configuration and Power Interface (ACPI)
Speaker control
I
2
C logic
Includes Field Replaceable Unit (FRU) device ID that is accessed through a private I
2
C
bus
Temperature sensors