PEX 8648-AA RDK Hardware Reference Manual, Version 1.2
Copyright © 2010 by PLX Technology, Inc. All rights reserved
26
4.1.2 LED
Indicators
Table 5
lists the functions of all LED indicators available for use on the PEX 8648 RDK base board. Additional
information for the Port-related LED indicators is provided in Section
3.5
, “
Port Configuration and Status LED
Indicators
.”
Table 5. PEX 8648 RDK Base Board LED Indicators
Reference
Designator
Signal
Color
Description
DS1 FATAL_ERR#
Red
Indicates that FATAL_ERR# is being
driven by the PEX 8648 switch.
DS2 PEX_INTA#
Yellow
Indicates that INTA# is being driven
by the PEX 8648 switch.
DS3 PERST#_PCIe_SWITCH
Red
Indicates that PERST#, to the
PEX 8648 switch and downstream
slots, is asserted.
DS4 POWER_UP_SEQUENCE_INCORRECT
Red
Indicates that the PEX 8648 RDK base
board was not powered up before the
Host CPU.
DS28 –
DS17
UP_PORT[11:0]
Green
Indicates which Port is the
upstream Port, for Ports 11
through 0, respectively.
DS32 –
DS29
NT_PORT[3:0]
Green
Indicates which Port is the
upstream NT Port, for Ports 3
through 0, respectively.
DS56 –
DS45
PRT_STATUS[11:0]
Green
Indicates whether the Port is
active/configured for use, for Ports 11
through 0, respectively.
DS58 HP_ATNLED_B#
Yellow
Attention LED for Parallel Hot-Plug
slot, J5.
DS59 HP_PWRLED_B#
Green
Power LED for Parallel Hot-Plug
slot, J5.
DS60 SHP_PWRLED#
Green
Power LED for Serial Hot-Plug slot, J8.
DS61 SHP_ATNLED#
Yellow
Attention LED for Serial Hot-Plug
slot, J8.
DS62 INTERLOCK
Yellow
INTERLOCK LED for Serial Hot-Plug
slot, J8.
DS63 2.5VDC_POWR_GOOD
Red
/
Green
Green
when 2.5 VDC to the PEX 8648
switch is present and within 10% of
nominal; otherwise,
red
.
DS64 1.0VDC_POWR_GOOD
Red
/
Green
Green
when 1.0 VDC to the PEX 8648
switch is present and within 5% of
nominal; otherwise,
red
.
