PEX 8680, PCI Express Gen 2 Switch, 80 Lanes, 20 Ports
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 8680 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 PEX 8680 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 8680 for hot
plug events, doorbell interrupts, baseline error reporting,
and advanced error reporting.
ExpressLane
PEX 8680 RDK
The PEX 8680 RDK (see Figure 10) is a hardware
module containing the PEX 8680 which plugs right into
your system. The PEX 8680 RDK can be used to test
and validate customer software, or used as an evaluation
vehicle for PEX 8680 features and benefits. The PEX
8680 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
The software
development kit includes drivers, source code, and GUI
interfaces to aid in configuring and debugging the PEX
8680. For more information, please refer to the PEX
8680 RDK Product Brief.
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
PEX8680-AA50BC F
PEX8680-16U8D BB
RDK
Description
80-Lane, 20-Port PCI Express Switch,
Pb-Free (35x35mm
2
)
PEX 8680 Rapid Development Kit with
x16 Upstream and Eight x8 Downstream
Figure 10. PEX8680-16U8D BB RDK
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.
Development Tools
PLX offers hardware and software tools to enable rapid
customer design activity. These tools consist of a
hardware module (PEX 8680 RDK), hardware
documentation (available at
and a
Software Development Kit (also available at
Visit
for more information.
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