PEX8725 Datasheet, PDF (5/5 Pages) AVAGO TECHNOLOGIES LIMITED – PCI Express Gen 3 Switch

PEX8725, PCI Express Gen 3 Switch, 24 Lanes, 10 Ports
Software 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 PEX8725 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 PEX8725 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 PEX8725 for hot
plug events, doorbell interrupts, baseline error reporting,
and advanced error reporting.
ExpressLane PEX8725 RDK
The PEX8725 RDK (see Figure 10) is a hardware module
containing the PEX8725 which plugs right into your
system. The PEX8725 RDK can be used to test and
validate customer software, or used as an evaluation
vehicle for PEX8725 features and benefits. The PEX8725
RDK provides everything that a user needs to get their
hardware and software development started.
Software Development Kit (SDK)
PLX’s Software Development Kit is available for
download at www.plxtech.com/sdk. The software
development kit includes drivers, source code, and GUI
interfaces to aid in configuring and debugging the
PEX8725.
Both performancePAK and visionPAK are supported by
PLX’s RDK and SDK, the industry’s most advanced
hardware- and software-development kits.
Product Ordering Information
Part Number
Description
PEX8725-BA80BC G
24-Lane, 10-Port PCI Express Switch,
Pb-Free (19x19mm²)
PEX8725-BA RDK
PEX8725 Rapid Development Kit
PLX Technology, Inc. All rights reserved. PLX, the PLX logo, ExpressLane,
Read Pacing and Dual Cast are trademarks of PLX Technology, Inc. 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 assumes no responsibility for any errors that may appear in
this material. PLX reserves the right, without notice, to make changes in product
design or specification.
Visit www.plxtech.com for more information.
Figure 10. PEX8725 RDK
Development Tools
PLX offers hardware and software tools to enable rapid
customer design activity. These tools consist of a hardware
module (PEX8725 RDK), hardware documentation
(available at www.plxtech.com), and a Software
Development Kit (also available at www.plxtech.com).
© PLX Technology, www.plxtech.com
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