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Intel E8870IO Server I/O Hub: Datasheet


The Intel® E8870 chipset delivers new levels of availability, features, and performance for servers. It provides flexible common modular architecture support for the Intel® Itanium® 2 processor family. The E8870 chipset up to four processors in a single node configuration, and up to eight processors in a multi-node configuration using the Scalability Port Switch (SPS) component, delivering stability to platforms through reuse and common architecture support. The component names used throughout this document refer to the component markings listed in Table 1-1.

Server I/O Hub Architectural Overview

The Intel® E8870IO Server I/O Hub (SIOH) component provides connectivity between the I/O bridge components and the other components in the E8870 chipset. The SIOH is capable of interfacing to a total of five I/O bridges via Hub Interface ports. The E8870 chipset may include up to two SIOH components, depending on the configuration.

The example in Figure 1-1 illustrates a typical eight-way configuration. A four-way single node configuration would consist of one SIOH and one SNC component. The SIOH is capable of interfacing up to four P64H2 I/O bridge devices via the 16-bit Hub Interface 2.0 compliant ports. The 8-bit Hub Interface 1.5 compliant port is used to connect an ICH4 bridge device, providing legacy I/O functionality.

Read the full Intel E8870IO Server I/O Hub Datasheet.

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