PEX 8648-AA RDK Hardware Reference Manual, Version 1.2
Copyright © 2010 by PLX Technology, Inc. All rights reserved
16
3.5
Port Configuration and Status LED Indicators
The PEX 8648 RDK base board includes several LED indicators, to indicate the board’s Port configuration and
status. (Refer to
Figure 16
.)
The Strapping switches instruct the PEX 8648 switch how to configure its Ports, which Port is to be the upstream
Port, and which Port (if any) is to be the NT Port. An on-board CPLD provides glue logic, which decodes the
Strapping switch settings. The on-board Configuration modules determine the PEX 8648 RDK base board’s
hardwired width and Port Number associated with the cable and each PCI Express slot. These are indicated by
the 7-segment
PORT WIDTH
and
PORT NUMBER
LED indicators.
PORT
WIDTH
PORT
NUMBER
UP PORT
NT PORT
PORT STATUS
DS5
DS8
DS11 DS14
DS15
DS12
DS9
DS6
DS7
DS10
DS13
DS16
DS29 DS30 DS31 DS32
DS17 DS18
DS20
DS19
DS21 DS22
DS24
DS23
DS25 DS26
DS28
DS27
DS45 DS46
DS48
DS47
DS49 DS50
DS52
DS51
DS53 DS54
DS56
DS55
DS33 DS36 DS39 DS42
DS34 DS37 DS40 DS43
DS35 DS38
DS41
DS44
SLOT 4
SLOT 5 SLOT 6 SLOT 7
SLOT 8
SLOT 9
SLOT 3
SLOT 2
SLOT 1
CABLE
SLOT 10
SLOT 11
Figure 16. PEX 8648 RDK Base Board Port Configuration and Status LED Indicators