PEX 8748, PCI Express Gen 3 Switch, 48 Lanes, 12 Ports

© PLX Technology, www.plxtech.com

Page 5 of 5

10/7/2010, Version 1.0

s

f

n the PEX 8748 are compliant to

xpress system models. The

ce Registers (CSRs) in a virtual

bus

umber, and

e

,

Software Model

From a system model viewpoint, each PCI Express port i

a virtual PCI to PCI bridge device and has its own set o

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 withi

the PCI and PCI E

Configuration Spa

primary/secondary PCI to PCI bridge are accessible by

type 0 configuration cycles through the virtual primary

interface (matching bus number, device n

function number).

Interrupt Sources/Events

The PEX 8748 switch supports the INTx interrupt messag

type (compatible with PCI 2.3 Interrupt signals) or

Message Signaled Interrupts (MSI) when enabled.

Interrupts/messages are generated by PEX 8748 for hot

plug events, doorbell interrupts, baseline error reporting

and advanced error reporting.

Development

PLX offers hardw

customer design

module (PEX 87

(available at

Figure 10. PEX 8748 RDK

Tools

are and software tools to enable rapid

activity. These tools consist of a hardware

48 RDK), hardware documentation

w.plxtech.com

ww

), and a Software

Development Ki

).

xpressLane PEX 8748 RDK

748

needs to get their

ardware and software development started.

E

The PEX 8748 RDK (see Figure 10) is a hardware module

containing the PEX 8748 which plugs right into your

system. The PEX 8748 RDK can be used to test and

validate customer software, or used as an evaluation

vehicle for PEX 8748 features and benefits. The PEX 8

RDK provides everything that a user

h

Software Development Kit (SDK)

PLX’s Software Development Kit is available for

development kit includes drivers, source code, and GUI

interfaces to aid in configuring and debugging the PEX

8748.

Both performancePAK an

PLX’s RDK and SDK, the

hardware- and software-dev

Product Ordering Info

d v

in

e

r

isionPAK are supported by

dustry’s most advanced

lopment kits.

mation

Part Number

Description

PEX8748-AA80BC G

48-Lane, 12-Port PCI Express Switch,

Pb-Free (27x27mm

PEX8748-AA RDK

PEX 8748 Rapid Development Kit

PLX Technology Inc.

hnology, Inc. All other

ification purposes only

heir

duct

,

All rights reserved. PLX, the PLX logo, ExpressLane,

Read Pacing and Dual Cast are trademarks of PLX Tec

product names that appear in this material are for ident

and are acknowledged to be trademarks or registered trademarks of t

respective companies. Information supplied by PLX is believed to be accurate

and reliable, but PLX assumes no responsibility for any errors that may appear in

this material. PLX reserves the right, without notice, to make changes in pro

design or specification.