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Intel® 6700PXH 64-bit PCI Hub DatasheetThe 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.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.PCI/PCI-X Bus
Interfaces (Secondary Bus)The Intel® 6700PXH 64-bit PCI Hub has two PCI Bus interfaces (PCI Bus A and PCI Bus B). In this document these buses are referred to
as the secondary buses. These interfaces can be independently configured as either a PCI Bus or PCI-X Bus. The Intel® 6700PXH 64-bit PCI Hub supports conventional
PCI and PCI-X Mode 1. PCI Bus extensions are also supported; these include 64-bit addressing outbound, with the capability to assert DAC, and full 64-bit
addressing inbound. The inbound packet size is based on cache line size of the platform.The PCI Bus interface is compliant with the PCI Local Bus
Specification Revision 2.3. The PCI-X interface on the Intel® 6700PXH 64-bit PCI Hub is compliant with the PCI-X Addendum to the PCI Local Bus Specification
Revision 1.0b as well as the Mode 1 section of the PCI-X Electrical and Mechanical Addendum to the PCI Local Bus Specification Revision 2.0a and the PCI-X
Protocol Addendum to the PCI Local Bus Specification Revision 2.0a. For conventional PCI Mode, the Intel® 6700PXH 64-bit PCI Hub supports PCI bus frequencies of
33 MHz and 66 MHz. For the PCI-X Mode 1, the Intel® 6700PXH 64-bit PCI Hub supports PCI bus frequencies of 66 MHz, 100 MHz, and 133 MHz. Four PCI-X bus slots are
supported at 66 MHz, two slots are supported at 100 MHz, and one slot is supported at 133 MHz.Read the full Intel® 6700PXH 64-bit PCI Hub Datasheet.
Platform overview covers new Intel® Atom™ processor with Intel® NM10 Express Chipset features.
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