Intel S5000XAL manual PCI Sub-system, 1.1 PCI32 32-bit, 33-MHz PCI Bus Segment

Functional Architecture Intel® Server Board S5000PAL / S5000XAL TPS

This section describes the function of most of the listed features as they pertain to this server board. For more detail information, see the Intel® S5000 Series Chipsets Server Board Family Datasheet or the Intel® Enterprise South Bridge-2 External Design Specification (Yellow Cover)

3.2.1PCI Sub-system

The primary I/O buses for the server board are PCI, PCI Express*, and PCI-X*, with six independent PCI bus segments. The PCI buses comply with the PCI Local Bus Specification, Revision 2.3. The table below lists the characteristics of the PCI bus segments. Details about each bus segment follow the table.

Table 5. PCI Bus Segment Characteristics

PCI Bus Segment	Voltage	Width	Speed	Type	On-board Device Support
PCI32	3.3V	32 bit	33MHz	PCI	Used internally for video controller
ESB-2
PXA	3.3V/5.0V	64 bit	133MHz	PCI-X*	Full height riser slot, up to three slots on riser
ESB-2					card
PE1	3.3V	x4	10Gb/S	PCIe*	Used for Intel chassis for mid-plane IOP
ESB-2 PCIe* Port2
PE2	3.3V	x4	10Gb/S	PCIe	Mezzanine connector for Intel® I/O Expansion
ESB-2 PCIe Port3					Module
PE4, PE5	3.3V	x8	20Gb/S	PCIe	Low profile riser slot, up to two x4 slots on 2U
BNB PCIe Ports
					riser, or one x8 slot on 1U riser.
4,5
PE6, PE7	3.3V	x8	20Gb/S	PCIe	Full height riser slot, up to two x4 slots on
BNB PCIe Ports
					riser or one x8
6,7

3.2.1.1PCI32: 32-bit, 33-MHz PCI Bus Segment

All 32-bit, 33-MHz PCI I/O is directed through the ESB-2 ICH6. The 32-bit, 33-MHz PCI segment created by the ESB-2-ICH6 is known as the PCI32 segment. The PCI32 segment supports the following embedded devices:

•2D Graphics Accelerator: ATI* ES1000 Video Controller

3.2.1.2PXA: 64-bit, 133MHz PCI-X* Bus Segment

One 64-bit PCI-X* bus segment is directed through the ESB-2 ICH6. This PCI-X segment, PXA, can support up to three add-in cards on a riser card plugged into the full height riser card slot (J4F1).

3.2.1.3PE1: One x4 PCI Express* Bus Segment

One x4 PCI Express* bus segment is directed through the ESB-2. This PCI Express segment, PE1, supports the optional Active SAS Midplane IOP as used in supported Intel chassis for this server board.

3.2.1.4PE2: One x4 PCI Express* Bus Segment

One x4 PCI Express* bus segment is directed through the ESB-2. This PCI Express segment, PE2, supports one x4 PCI Express segment to the proprietary Intel® I/O Expansion Module mezzanine connector (J3B1).

34Revision 1.4

Intel order number: D31979-007