Datasheet

Functional Architecture Intel® S5000 Server Board Family Datasheet

Revision 1.3

Intel order number D38960-006

2.1.2.1 PCI Interface

The Intel

631xESB / 632xESB I/O Controller Hub PCI interface supports a 33-MHz, Revision

2.3-compliant implementation. All PCI signals are 5-V tolerant, except for PME#. An integrated

PCI arbiter supports up to six external PCI bus masters in addition to the internal Intel

631xESB / 632xESB I/O Controller Hub requests. On Intel

boards that use the Intel

5000

MCH, this PCI interface is used to support one on-board PCI device: the ATI* ES1000 video

controller.

2.1.2.2 PCI Express* Interface

The Intel

631xESB / 632xESB I/O Controller Hub provides PCI Express* root ports that are

compliant with the PCI Express Base Specification Revision 1.0a. The PCI Express root ports

can be statically configured as four x1 ports or ganged together to form one x4 port. Each root

port supports 250 MB/s bandwidth in each direction (500 MB/s concurrent).

The Intel

631xESB / 632xESB I/O Controller Hub implements two x4 downstream ports. The

maximum realized bandwidth on this interface is 1 GB/s in each direction simultaneously, for an

aggregate of 2 GB/s. These two ports can be configured as one x8 PCI Express* port. This PCI

Express interface is compliant with the PCI Express Base Specification Revision 1.0a.

2.1.2.3 PCI-X* Bus Interface

The Intel

631xESB / 632xESB I/O Controller Hub provides a PCI-X* bus interface that supports

conventional PCI and PCI-X Mode 1. The PCI-X interfaces on the Intel

631xESB / 632xESB

I/O Controller Hub are compliant with the following:

 “PCI-X Addendum” to the PCI Local Bus Specification Revision 1.0b

 “Mode 1” sections of the “PCI-X Electrical and Mechanical Addendum” to the PCI Local

Bus Specification Revision 2.0a

 “PCI-X Protocol Addendum” to the PCI Local Bus Specification Revision 2.0a

The Intel

631xESB / 632xESB I/O Controller Hub supports PCI bus frequencies of 66 MHz,

100 MHz, and 133 MHz.

2.1.2.4 IDE Interface (Bus Master Capability and Synchronous DMA Mode)

The Intel

631xESB / 632xESB I/O Controller Hub has an integrated IDE controller with an

independent IDE signal channel that supports up to two IDE devices. This integrated

functionality provides the interface for IDE hard disks and ATAPI devices. Each IDE device can

have independent timings. The IDE interface supports PIO IDE transfers of up to 16 MB/s and

Ultra ATA transfers of up 100 MB/s. The IDE interface integrates 16x32-bit buffers for optimal

transfers and does not consume any ISA DMA resources. The IDE signal channels in the Intel

631xESB / 632xESB I/O Controller Hub can be configured to primary and secondary channels.