1 Introduction
The Intel® 6700PXH 64-bit PCI Hub is a peripheral chip that performs PCI bridging functions
between the PCI Express* interface and the PCI Bus. The Intel® 6700PXH 64-bit PCI Hub
contains two PCI bus interfaces that can be independently configured to operate in PCI (33 or
66 MHz) or PCI-X Mode 1 (66, 100, or 133 MHz), for either 32 or 64 bit PCI devices.
The Intel® 6700PXH 64-bit PCI Hub further supports the new PCI Standard Hot-Plug Controller
and Subsystem Specification Revision 1.0. Each PCI interface contains an I/OxAPIC with 24
interrupts and a standard hot plug controller.
1.1
Related Documents
• PCI Express* Base Specification, Revision 1.0a, from www.pci-sig.com.
• PCI-X Electrical and Mechanical Addendum to the PCI Local Bus Specification, Revision
2.0a, and PCI-X Protocol Addendum to the PCI Local Bus Specification, Revision 2.0a, both
from www.pci-sig.com.
• PCI Local Bus Specification, Revision 2.3, from www.pci-sig.com.
• PCI Standard Hot-Plug Controller and Subsystem Specification, Revision 1.0, from
www.pci-sig.com.
• PCI to PCI Bridge Architecture Specification, Revision 1.1, from www.pci-sig.com.
• PCI Power Management Interface Specification Revision 1.1, from www.pci-sig.com.
• SMBus Specification, Revision 2.0.
• IEEE Standard Test Access Port and Boundary Scan Architecture 1149.1a.
1.2
Intel® 6700PXH 64-bit PCI Hub Overview
1.2.1
PCI Express* Interface (Primary Bus)
The primary bus interface between the Intel® 6700PXH 64-bit PCI Hub and the core logic chipset
component is the PCI Express* interface. Maximum realized bandwidth on this interface is 2 GB/s
in each direction simultaneously, for an aggregate of 4 GB/s. The PCI Express* interface is
compatible with the PCI Express* Base Specification Revision 1.0a. The Intel® 6700PXH 64-bit
PCI Hub supports X4, and X8 widths for PCI Express*. X4 width is supported on 3:0 (with 3 being
lane 3) and 4:7 (with 4 being lane 3). The Intel® 6700PXH 64-bit PCI Hub also supports X8 lane
reversal, plus X4 lane reversal on the lower 4 lanes only.
Intel® 6700PXH 64-bit PCI Hub Datasheet
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INTEL [ INTEL ]
