C
OMPACT
CHAMP-AV IV U
SER
’
S
M
ANUAL
C
URTISS
-W
RIGHT
C
ONTROLS
E
MBEDDED
C
OMPUTING
1-16
814256 V
ERSION
2 F
EBRUARY
2006
General Board
Support
The General Board Support module provides the features below:
• Readable and writable test registers to facilitate Discovery device interface testing
• Processor ID information associated with each Discovery device interface
• cOBIC Device Revision Register
• Global LED control registers
• Local LED control registers
• Jumper status information read from eight input pins
• Software controlled independent processor resets included with a standard board reset
Indicator LEDs
The Compact CHAMP-AV IV provides fifteen user-controllable LEDs. Five of these are the
green processor status LEDs, which are visible on the front panel of the air-cooled version,
and ten more are surface mount LEDs located on the back of the board (see Figure 1.9 on
page 1-22). All of the Compact CHAMP-AV IV surface mount LEDs can be controlled by any
of the processors writing to the Global LED register. Further, each of the processors has a
processor LED register that controls the green processor status LED and two of the surface
mount status LEDs. See Figure 1.6 on page 1-16 for additional information.
There is an additional red LED on the front panel used to indicate a failure determined by the
on-board diagnostic firmware.
F
IGURE
1.6: LED Control
OR
G
lo
bal LED
R
egi
st
er
Red System LED
Green Status LEDs
Green Processor LEDs
10
/
5
/
Green Status LEDs
10
/
Green Processor LEDs
5
/
LEDs are turned on by
either of the LED control
registers
Processor A
LED Register
Green Status LEDs
Green Processor LED
1
/
2
/
Processor B
LED Register
Green Status LEDs
Green Processor LED
1
/
2
/
Processor C
LED Register
1
/
2
/
Processor D
LED Register
1
/
2
/
Processor E
LED Register
1
/
2
/
Green Status LEDs
Green Processor LED
Green Status LEDs
Green Processor LED
Green Processor LED
Green Status LEDs
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