PCI I/O Subsystem, PCI Subsystem | Intel SE7501WV2 guide

Configuration and Initialization

Intel® Server Board SE7501WV2 TPS

4.6PCI I/O Subsystem

4.6.1PCI Subsystem

The primary I/O bus for the SE7501WV2 server board is the PCI subsystem, with three independent PCI bus segments. The PCI bus complies with the PCI Local Bus Specification, Rev 2.2. The P32-A bus segment is directed through the ICH South Bridge while the two 64-bit segments, P64-B and P64-C, are directed through the P64H2 I/O Bridge. The following table lists the characteristics of the three PCI bus segments.

Table 10. PCI Bus Segment Characteristics

PCI Bus	Voltage	Width	Speed	Type	PCI I/O Riser Slots
Segment	Voltage	Width	Speed	Type	PCI I/O Riser Slots
Segment

P32-A	5 V	32-bits	PCI 33 MHz	Peer Bus	–

P64-B	3 V	64-bits	PCI-X 100 MHz	Peer Bus	Supports full-length cards, 3.3V bus
P64-C	3 V	64-bits	PCI-X 100 MHz	Peer Bus	Supports low-profile cards, 3.3V bus

4.6.2P32-A: 32-bit, 33-MHz PCI Subsystem

All 32-bit, 33-MHz PCI I/O for the SE7501WV2 server board is directed through the ICH South Bridge. The 32-bit, 33-MHz PCI segment created by the ICH is known as the P32-A segment. The P32-A segment supports the following embedded devices and connectors:

•2D/3D Graphics Accelerator: ATI Rage* XL Video Controller

•ATA-100 controller: Promise Technology* PDC20277

Each of the embedded devices listed above can be disabled via a BIOS Setup option.

4.6.2.1Device IDs (IDSEL)

Each device under the PCI hub bridge has its IDSEL signal connected to one bit of AD[31:16], which acts as a chip select on the PCI bus segment in configuration cycles. This determines a unique PCI device ID value for use in configuration cycles. The following table shows the bit to which each IDSEL signal is attached for P32-A devices and the corresponding device description.

	Table 11. P32-A Configuration IDs

IDSEL Value		Device
28		ATI Rage XL Video Controller

18		ATA-100 controller Promise Technology PDC20277

4.6.2.2P32-A Arbitration

P32-A supports three PCI masters (ATA Rage XL, Promise ATA-100 Controller, and the ICH3- S). All PCI masters must arbitrate for PCI access, using resources supplied by the ICH. The

44	Revision 1.0
	Intel reference number C25653-001

SE7501WV2 specifications

The Intel SE7501WV2 is a versatile server motherboard designed to meet the demanding needs of modern computing environments. Engineered with a focus on performance, reliability, and flexibility, this motherboard is tailored for a range of applications, from entry-level servers to high-performance computing tasks.

One of the main features of the SE7501WV2 is its support for Intel's Xeon processors, specifically those based on the Netburst architecture. This compatibility allows for powerful multi-threaded processing capabilities, making it ideal for businesses seeking to optimize their server performance. The motherboard supports dual CPU configurations, enabling up to two processors to work simultaneously, thereby increasing computational power and efficiency.

The motherboard incorporates Intel's advanced server management technologies such as Intel Active Monitoring Technology, which helps in monitoring system health and optimizing power usage. Additionally, it features Intel's I/O Acceleration Technology, which enhances data throughput and reduces latencies, ensuring that applications run smoothly and efficiently.

Another significant characteristic of the SE7501WV2 is the memory capacity it offers. With support for up to 16 GB of ECC (Error-Correcting Code) DDR SDRAM, the motherboard helps in maintaining system stability during high workloads. The ECC memory not only prevents data corruption but also significantly enhances the reliability of mission-critical applications.

For connectivity, the SE7501WV2 comes equipped with multiple PCI-X slots, enabling the addition of various expansion cards for network, storage, and graphic capabilities. This expandability is crucial for enterprises that need to adapt their server architecture to evolving workloads.

Moreover, the SE7501WV2 features integrated high-performance RAID support, improving data redundancy and performance. This feature is essential for organizations that prioritize data security and require robust backup solutions.

In terms of power management, the motherboard supports advanced power features that help reduce operational costs while maximizing performance. The design ensures efficient power consumption, allowing it to run cooler and quieter, which is particularly beneficial for noisy data center environments.

In conclusion, the Intel SE7501WV2 motherboard is designed for those who require robust performance, reliability, and flexibility in server applications. With its support for dual Xeon processors, extensive memory capabilities, advanced management technologies, and expandability, it stands out as a solid solution for many enterprise-level computing needs.

Intel SE7501WV2 PCI I/O Subsystem, 2 P32-A 32-bit, 33-MHz PCI Subsystem, Device IDs Idsel

Models: SE7501WV2