PLX Technology PEX 8647-AA RDK, Справочник по аппаратуре

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ATX HD
Power
Connectors
(J2 & J3)
5V to 3.3VCC
DC/DC
converter
(U6)
12V_A
GND
12V_A
3.3V_A
GND
PCIe Edge Card Connectors
SLOT 1
SLOT 2
12V to 1V
DC/DC
converter
(U7)
PEX 8647
3.3V to2.5V
LDO
(U8)
On board
3.3V Circuits
1.0VCC
GND
PCIe Card
edge
Connector
P1
GND
GND
3.3VCC
2.5VCC
5V_A
JP7
12VCC
Voltage
Monitoring
Circuit
Figure 2-5. PEX 8647-AA RDK Power Subsystem
2.7 LED Indicators
The PEX 8647-AA RDK provides a number of LED indicators including power-on indication, PEX 8647 port link
status indication, fatal error indication, event/error indication, and voltage level monitoring indications.
Table 2-1
provides a quick explanation of the various board indicators.
Table 2-1. PEX 8647-AA RDK LED Indicator descriptions
Indicator Type Locations LED On LED Off
Slot Power LED/green color D1 12V power on at PCI Express connectors SLOT 1 and 2 12V power off
Slot Power LED/green color D3 5V power on at PCI Express connectors SLOT 1 and 2 5V power off
Slot Power LED/green color D5 3.3V power on at PCI Express connectors SLOT 1 and 2 3.3V power off
Board Power LED/green color D2 12V power on at PCI Card Edge connector P1 12V power off
Board Power LED/green color D4 3.3V power on at PCI Card Edge connector P1 3.3V power off
PEX 8647 Port Link Status
LED/green color
D10 Port 0 activity (see Table 2-2 for details)
If LED off, Port 0
link is down
PEX 8647 Port Link Status
LED/green color
D11 Port 4 activity (see Table 2-2 for details)
If LED off, Port 4
link is down
PEX 8647 Port Link Status
LED/green color
D12 Port 8 activity (see Table 2-2 for details)
If LED off, Port 8
link is down
PEX 8647 Fatal Error LED/
red color
D13 PEX 8647 detected a fatal error.
No fatal errors
reported
PEX 8647 Event/Error
LED/green color
D14 PEX 8647 detected events or errors.
No event/error
reported
Voltage level monitoring /bi-
color LED
D8 1V to the PEX 8647 (see Table 2-3 for details)
Voltage level monitoring / bi-
color LED
D9 2.5 V to the PEX 8647 (see Table 2-3 for details)
PEX 8647-AA RDK Hardware Reference Manual, Version 1.2
Copyright © 2008 by PLX Technology, Inc. All rights reserved
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