Software Usage Model

From a system model viewpoint, each PCI Express port is a

virtual PCI to PCI bridge device and has its own set of PCI

Express configuration registers. It is through the upstream port

that the BIOS or host can configure the other ports using

standard PCI enumeration. The virtual PCI to PCI bridges

within the PEX 8524V are compliant to the PCI and PCI

Express system models. The Configuration Space Registers

(CSRs) in a virtual primary/secondary PCI to PCI bridge are

accessible by type 0 configuration cycles through the virtual

primary bus interface (matching bus number, device number,

and function number).

Interrupt Sources/Events

The ExpressLane PEX 8524V switch supports the INTx

interrupt message type (compatible with PCI 2.3 Interrupt

signals) or Message Signaled Interrupts (MSI) when enabled.

Interrupts/messages are generated by PEX 8524V for hot plug

events, doorbell interrupts, baseline error reporting, and

advanced error reporting.

Development Tools

PLX offers hardware and software tools to enable rapid

customer design activity. These tools consist of a hardware

module (PEX 8524V RDK), hardware documentation, and a

Software Development Kit (SDK).

Figure 8. PEX 8524V RDK

ExpressLane PEX 8524V RDK

The RDK hardware module includes the PEX 8524V with one

x8 upstream port, one x8 downstream port, and two x4

downstream ports. The upstream port uses a x16 PCI Express

edge connector. PLX offers adapters (x8, x4, and x1) which

can be used to plug the RDK in smaller slots. The PEX 8524V

RDK hardware module can be installed on a motherboard,

used as a riser card, or configured as a bench-top board. The

PEX 8524V RDK can be used to test and validate customer

software. Additionally, it can be used as an evaluation vehicle

for PEX 8524V features and benefits.

SDK

The SDK tool set

includes:

- Linux &

Windows drivers

- C/C++ Source

code, Objects,

libraries

- User’s Guides &

Application

examples

PLX Technology, Inc.

870 Maude Ave.

Sunnyvale, CA 94085 USA

Tel: 1-800-759-3735

Tel: 1-408-774-9060

Fax: 1-408-774-2169

Email: info@plxtech.com

Web Site: www.plxtech.com

Product Ordering Information

Part Number

Description

PEX8524V-BB25BI

24-Lane, 6-Port PCIe Switch, 680-ball PBGA 35x35mm

PEX8524V-BB25BI G

24-Lane, 6-Port PCIe Switch, 680-ball PBGA 35x35mm

PEX 8524V RDK-8

PEX 8524V Rapid Development Kit with x16 Edge Connector & x8 Adapter

PEX 8524V RDK-4

PEX 8524V Rapid Development Kit with x16 Edge Connector & x4 Adapter

PEX 8524V RDK-1

PEX 8524V Rapid Development Kit with x16 Edge Connector & x1 Adapter

© 2006 PLX Technology, Inc. All rights reserved. PLX and the PLX logo are registered trademarks of PLX Technology, Inc. ExpressLane is a trademark of PLX Technology,

Inc., which may be registered in some jurisdiction. All other product names that appear in this material are for identification purposes only and are acknowledged to be

trademarks or registered trademarks of their respective companies. Information supplied by PLX is believed to be accurate and reliable, but PLX Technology, Inc. assumes no

responsibility for any errors that may appear in this material. PLX Technology, Inc. reserves the right, without notice, to make changes in product design or specification.

PEX8524V-SIL-PB-P1-1.4

01/07