Intel E8870IO Server I/o Hub
Description
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Intel® E8870IO Server I/O Hub (SIOH) Datasheet
Product Features
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Scalability Port (SP): — Two SPs with 3.
2 GB/s peak bandwidth per direction per SP.
— Bi-directional SPs for a total bandwidth of 12.
8 GB/s.
Four Hub Interface 2.
0 Ports: — For connecting to Intel® 82870P2 PCI/ PCI-X 64-bit Hub 2 (P64H2).
— 16-bit, 533 MHz interface.
— 1 GB/s peak data rate.
One Hub Interface 1.
5 Port: — For connecting to Intel® 82801DB.
Legacy I/O Controller Hub 4 (ICH4).
— 8-bit, 266 MHz interface.
— 266 MB/s peak data rate.
Supports peer-to-peer write traffic between Hub Interface Ports.
Dedicated read cache for each Hub Interface Port: — 32 128-byte cache lines.
— Dedicated prefetch engines for Hub Interface 2.
0 ports.
Supports caching of frequently used and prefetched data residing in main memory.
64-line write cache.
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Aggressive prefetching algorithm optimized for PCI-X functionality supported by the 82870P2 component: — Utilizing enhanced features such as read-streaming, and prefetch horizon.
Supports multiple unordered inbound traffic streams: — Two unordered streams per Hub Interface 2.
0 port.
— One stream for the Hub Interface 1.
5 port.
System Management Bus (SMBus) 2.
0 slave interface for server management with Packet Error Checking.
Reliability, Availability, and Serviceability (RAS): — Sideband access to configuration registers via SMBus SMBus or JTAG.
— End-to-end ECC for all interfaces.
— Fault detection and logging.
— Signal connectivity testing via.
boundary scan.
Packaging: — 42.
5 mm x 42.
5 mm — 1012-pin organic LAN grid array (OLGA) package-2B.
Document Number: 251111-001 August 2002
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