PEX 8649, PCI Express Gen 2 Switch, 48 Lanes, 12 Ports
CPU
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Development Tools
PLX offers hardware and software tools to enable rapid
customer design activity. These tools consist of a hardware
module (PEX 8649 RDK), hardware documentation
(available at
and a Software
Development Kit (also available at
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PEX 8649
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PEX
PEX
PEX 8616 8616
PEX 8612
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PEX 8612
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FC
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ExpressLane PEX 8649 RDK
The PEX 8649 RDK (see Figure 10) is a hardware module
containing the PEX 8649 which plugs right into your
system. The PEX 8649 RDK can be used to test and
validate customer software, or used as an evaluation
vehicle for PEX 8649 features and benefits. The PEX 8649
RDK provides everything that a user needs to get their
hardware and software development started.
8 Disk Chassis
8 Disk Chassis
8 Disk Chassis
8 Disk Chassis
Figure 9. N+1 Failover.
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 8649 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).
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
8649. For more information, please refer to the PEX 8649
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
PEX8649-AA50BC F
PEX8649-16U16D AIC
RDK
Interrupt Sources/Events
The PEX 8649 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 8649 for hot
plug events, doorbell interrupts, baseline error reporting,
and advanced error reporting.
Description
48-Lane, 12-Port PCI Express Switch,
Pb-Free (27x27mm
2
)
PEX 8649 Rapid Development Kit with
x16 Upstream and Two x16 Downstream
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
for more information.
Figure 10. PEX8649-16U16D AIC RDK
© PLX Technology, www.plxtech.com
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5/14/2009, Version 1.1
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