PEX 8509RDK Hardware Reference Manual v1.1
© 2007, PLX Technology, Inc. All rights reserved.
1
1. General Information
The PLX PEX 8509RDK is a Rapid Development Kit based on the PEX 8509, a 8-lane, 8-port PCI
Express switch. The PEX 8509RDK provides a complete hardware and software development platform to
facilitate getting designs up and running quickly, lowering risk and reducing time-to-market. This RDK
allows the upstream port of the PEX 8509 to be directly plugged into a system board’s x16/x8/x4 PCI
Express connector, or plugged into an x1 PCI Express connector by using card edge adapters.
Figure 1-1. PEX 8509RDK Component Side View
PEX
8509
JTAG Header
Reference Clock Buffers
Reset Circuitry
3.3V-1V
Regulator
5V-3.3V DC/DC
converter
VTT Regulator
Manual PERST#
EEPROM
Socket
I2C
A1
U1
J1
J2
J4
J3
J5
Main Board Power
Indicators
HP BUTTON#
P1
Slots J1/J2/J3
Power Indicator
Lanes
0 1 2 3
4 5 6 7
Powered by J5
User Control DIP switches
U10
U11
U12
U13
SW6
U14
U2
JP3
JP4
JP1
SW5
U9
U8
SW1
SW3
SW4
SW2
JP2
JP5
Hot Plug Indicators
Lanes
