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 8512 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 8512 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 8512 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 PEX 8512
Rapid Development Kit (RDK), hardware documentation, and
a Software Development Kit (SDK).
PORT 1 - X4
Lane Status
LEDs
RDK
The RDK hardware module includes the PEX 8512 with one
x4 (card-edge slot) port and two additional x4 ports (see
Figure 7). The RDK is available with x4 card edge connector
and adapters for x1 edge connectors are available to plug the
RDK into smaller slots. The PEX 8512RDK hardware module
can be installed in a motherboard and be used as a riser card.
The PEX 8512RDK can be used to test and validate customer
software. Additionally, it can be used as an evaluation vehicle
for PEX 8512 features and benefits.
Manual
Reset
PORT 2 – X4
SDK
The SDK tool set
includes:
-
Linux & Windows
drivers
-
C/C++ Source code,
Objects, libraries
-
User’s Guides &
Application examples
Windows/Linux Apps
User
Space
Hot Plug
Ckt.
JTAG
Header
Con vert er
12V-to-1V
Non-Iso
DIP switch
for cfg.
I2C
PEX API
Kernel
Space
PCIe
Driver
NT PnP
Driver
PEX 8512
8512
RefClk
Reset
Ckt.
PERST#
(Upstream Port)
x4
EEPROM
Figure 7. PEX 8512RDK
Hardware
PCI Express Interface
Product Ordering Information
PLX Technology, Inc.
870 W. 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: www.plxtech.com
Part Number
PEX8512-AC25BI
PEX8512-AC25BI G
PEX 8512RDK
Breakout Board-422
Description
12 Lane, 5 Port PCIe Switch, 376-ball PBGA 23x23mm pkg
12 Lane, 5 Port PCIe Switch, 376-ball PBGA 23x23mm pkg, Pb-free
PEX 8512 Rapid Development Kit with x4 Connector
Breakout Board w/ x16 edge connector for additional fan-out to two
slots (x4, x2, x2).
Please contact PLX sales at 408-774-9060 for sampling.
© 2007 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.
PEX8512-SIL-PB- 1.2
05/07
PLX [ PLX TECHNOLOGY ]
