PEX 8648-AA RDK Hardware Reference Manual, Version 1.2
Copyright © 2010 by PLX Technology, Inc. All rights reserved iii
Figures
Figure 1. PEX 8648 RDK Base Board Component Layout....................................................................................... 1
Figure 2. PEX 8648 RDK Being Used in a PC.......................................................................................................... 3
Figure 3. PEX 8648 RDK Base Board Component Layout....................................................................................... 4
Figure 4. Station 0, x4 UP and x4x4x4 DOWN ......................................................................................................... 7
Figure 5. Station 0, x16 UP ....................................................................................................................................... 7
Figure 6. Station 0, x8 UP and x8 DOWN (Factory Default)..................................................................................... 8
Figure 7. Station 0, x8 UP and x4x4 DOWN ............................................................................................................. 8
Figure 8. Station 0, x8 UP and x8 NT........................................................................................................................ 9
Figure 9. Station 0, x4 UP, x4 NT, and x4x4 DOWN................................................................................................. 9
Figure 10. Station 1, x4x4x4x4 DOWN.................................................................................................................... 10
Figure 11. Station 1, x16 DOWN............................................................................................................................. 10
Figure 12. Station 1, x8x8 DOWN (Factory Default)............................................................................................... 11
Figure 13. Station 1, x8x4x4 DOWN ....................................................................................................................... 11
Figure 14. PEX 8648 RDK Base Board PCI Express Hot-Plug Circuitry................................................................ 13
Figure 15. PEX 8648 RDK Base Board Reference Clock Circuitry......................................................................... 15
Figure 16. PEX 8648 RDK Base Board Port Configuration and Status LED Indicators ......................................... 16
Figure 17. PEX 8648 RDK Base Board Hardware Strapping DIP Switches – SW1, SW11,
SW4, SW5, SW9, SW6, SW2, and SW10, Default Settings..................................................................... 18
Figure 18. PEX 8648 RDK Base Board Power Circuitry......................................................................................... 20
Figure 19. JTAG Header (Top View)....................................................................................................................... 22
Figure 20. I2C Headers (Top View) ......................................................................................................................... 22
Figure 21. TPV21, TPV22, DS1, and DS2 Placement on PEX 8648 RDK Base Board......................................... 23
Figure 22. PEX 8648 RDK Base Board Mechanical Outline................................................................................... 24
Figure 23. PEX 8648 RDK Base Board Dimensions............................................................................................... 24
Figure 24. De-Coupling Capacitor Footprints.......................................................................................................... 28
Figure 25. PEX 8648 RDK Base Board Power Ball and Perimeter De-Coupling Capacitor Footprints
(Reverse Screen)...................................................................................................................................... 29
Figure 26. PEX 8648 RDK Base Board External PCB Layer Stackup Report........................................................ 30
Tables
Table 1. PEX 8648 RDK Base Board Port Configurations........................................................................................ 6
Table 2. PEX 8648 Switch Port Status LED On/Off Patterns, by State .................................................................. 17
Table 3. PEX 8648 RDK Base Board Hardware Strapping DIP Switches – SW1, SW11,
SW4, SW5, SW9, SW6, SW2, and SW10 ................................................................................................ 19
Table 4. PEX 8648 RDK Base Board Monitoring Points......................................................................................... 25
Table 5. PEX 8648 RDK Base Board LED Indicators............................................................................................. 26
Table 6. PEX 8648 RDK Base Board Controls ....................................................................................................... 27
