Processor Board - Intel SR870BN4 - Server Platform - 0 MB RAM Product Manual

Processor Board

The processor board contains sockets for installing up to four Intel Itanium 2 processors and
supports up to four power pods. It also accepts the memory boards.
The processor board and memory boards are installed horizontally in the processor/memory
module. The processor/memory module docks into the front of the chassis and mates with the
midplane board mounted vertically in the middle of the chassis.
The processor board supports the following:
Sockets for up to four Intel Itanium 2 processors. Two of the processor sockets are mounted on
the secondary side of the processor board.
Provision for up to four 48 V DC-to-DC converter power pods, one for each Intel Itanium 2
processor.
DC-to-DC voltage converters:
Two 48 V to 2.5 V plug-in DC-to-DC converters for DDR memory support
One 48 V to 3.3 V plug-in DC-to-DC converter
Embedded regulators:
3.3 V to 1.2 V
3.3 V to 1.5 V
3.3 V to 1.8 V
1.8 V to 1.3 V linear regulator
One SNC-M component of the Intel®E8870 chip set.
Three Firmware Hubs (FWH) for BIOS and system configuration utility (SCU) software.
Two memory board connectors that support two Rambus channels each. One memory
connector is mounted on the secondary side of the processor board.
One VHDM 360-pin connector for I/O connections.
One debug port for use with an In-Target Probe (ITP) (debug only).
Two I2C system management buses (SMBus).
Serviceability LEDs.
NOTE
The processor board also contains a switch and two LEDs on the front left
corner of the primary side of the board that are not used in the SR870BN4
server system.
36 Intel® SR870BN4 Server System Product Guide