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Functional Description
2.10.1.2
Watchdog LED and Temperature Status LED
The CP6003-RA provides one Watchdog Status LED (WD LED) and one Temperature Status
LED (TH LED).
Note ...
If the TH LED flashes red at regular intervals, it indicates that the processor
junction temperature has reached a level beyond which permanent silicon dam-
age may occur. Upon assertion of THERMTRIP#, the processor will shut off its
internal clocks (thus halting program execution) in an attempt to reduce the pro-
cessor junction temperature.
Once activated, THERMTRIP# remains latched until a cold restart of the
CP6003-RA is undertaken (all power off and then on again).
Table 2-3:
Watchdog LED and Temperature Status LED Function
LED
COLOR
WD LED
red /
green
(CP6003-RA)
TH LED
red /
green
(CP6003-RA)
Page 2 - 8
FUNCTION DURING
BOOT-UP
The WD LED is not lit
Watchdog Status
during boot-up.
The WD LED states are:
•
•
•
The TH LED is lit
Temperature Status
green during boot-
The TH LED states are:
up.
•
•
•
•
FUNCTION AFTER BOOT-UP
Off:
Watchdog inactive
Green:
Watchdog active, waiting to be triggered
Red:
Watchdog expired
Off:
Power failure
Green:
If the CPU temperature is below 100°C
Red:
In case of overtemperature of the CPU, i.e. the
CPU has reached a temperature above 100°C
Red blinks: If the CPU has been shut off, i.e. the CPU has
reached a temperature above 125°C
In this event, all Debug LEDs (DLED3..0) are
blinking red as well.
CP6003-RA/RC
ID 1046-3890, Rev. 1.0
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