5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
Title
Size
Document Number
Rev
Date:
Sheet
of
91-0071-004-A
004
PEX8509RDK - Functional Block Diagram
PLX Technology, Inc.
870 Maude Avenue
Sunnyvale, CA 94085
www.plxtech.com
C
1
9
Thursday, June 14, 2007
Title
Size
Document Number
Rev
Date:
Sheet
of
91-0071-004-A
004
PEX8509RDK - Functional Block Diagram
PLX Technology, Inc.
870 Maude Avenue
Sunnyvale, CA 94085
www.plxtech.com
C
1
9
Thursday, June 14, 2007
Title
Size
Document Number
Rev
Date:
Sheet
of
91-0071-004-A
004
PEX8509RDK - Functional Block Diagram
PLX Technology, Inc.
870 Maude Avenue
Sunnyvale, CA 94085
www.plxtech.com
C
1
9
Thursday, June 14, 2007
PEX 8509RDK
12/01/2006
Revision History
Rev#
Date
Changes from last revision
000
Initial Revision
NOTE: NL INDICATES COMPONENT NOT LOADED
TABLE OF CONTENTS
Page 1: Functional Block Diagram
Page 2: Board Layout Information
Page 3: PEX8509 PEX Interface
Page 4: PEX8509 Power, EEPROM, JTAG, Misc.
Page 5: PCI Express Slot Connectors 1
Page 7: Hot Plug Circuitry
Page 8: Clock and Reset
Page 9: Board Power
DIP
SWITCHES
PEX8509
x4
x1
x1
x1
EEPROM
JTAG
CLK
BUF
Port 3
Port 1
Port 2
HD CONN.
5V-to-3.3V
DC/DC
Converter
3.3V-to-1V
LDO
Port 0
Port 3
Port 2
Port 1
Port 4
Page 6: PCI Express Slot Connectors 2
x1
CLK
BUFFER
Port 4
HOT PLUG
CRKT.
001
01/09/2007
Feedback from design review
002
04/05/2007
Re-designed Hot Plug circuit,
cost reduction.
3.3V-to-1.5V
LDO
003
04/25/2007
Various BOM updates/fixes
06/14/2007
004
Changed C58 value from 0.001uF to 0.1uF
