Functional Architecture SE7500CW2 Server Board Technical Product Specification
12
Revision 1.40
512MB 64M x 72 256Mbit
32M x 8 18/2/4 13/2/10
512MB 64M x 72 512Mbit 64M x 8 9/1/4 13/2/11
1GB 128M x 72 256Mbit
64M x 4 36/2/4 13/2/11
1GB 128M x 72 512Mbit 64M x 8 18/2/4 13/2/11
1GB 128M x 72 512Mbit 128M x 4 18/1/4 13/2/12
2GB 256M x 72 512Mbit 64M x 8 TBD TBD
2GB 256M x 72 512Mbit 128M x 4 TBD TBD
2GB 256M x 72 512Mbit 128M x 4 TBD TBD
3.2.2 MCH North Bridge
The Intel E7500 Chipset MCH North Bridge (MCH) is a 1005 ball FC-BGA device and uses the
proven components of previous generations like the Intel Xeon processor bus interface unit, the
Hub Interface unit, and the DDR memory interface unit. In addition, the MCH incorporates a Hub
Interface (HI). The HI interface enables the MCH to directly interface with the P64H2. The MCH
also increases the main memory interface bandwidth and maximum memory configuration with
a 144-bit wide memory interface.
The MCH integrates three main functions:
• An integrated high performance main memory subsystem.
• An HI 2.0 bus interface that provides a high-performance data flow path between the host
bus and the I/O subsystem.
• A HI 1.5 bus which provides an interface to the ICH3-S (South Bridge).
Other features provided by the MCH include the following:
• Full support of ECC on the processor bus.
• Full support of chipkill on the memory interface with x4 DIMMs.
• Twelve deep in-order queue.
• Full support of registered DDR-200 and DDR-266 ECC DIMMs.
• Support for 8GB
1
of DDR DIMMs.
• Memory scrubbing.
3.2.3 P64H2
The P64H2 is a 567 ball FC-BGA device and provides an integrated I/O bridge that provides a
high-performance data flow path between the HI 2.0 and the 64-bit I/O subsystem. This
subsystem supports peer 64-bit PCI-X segments. Because it has two PCI interfaces, the P64H2
can provide large and efficient I/O configurations. The P64H2 functions as the bridge between
1
As of the writing of this document, testing with 2GB DIMM modules was not complete and therefore not yet
supported. 2GB DIMM support would allow for up to 8GB of main memory on the SE7500CW2. For updates on
support of 2GB DIMM modules, visit the SE7500CW2 support website at
http://support.intel.com/support/motherboards/server/se7500cw2.
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