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Chapter 1
Fixed Behavior Signals
Status LED
The sbRIO-9651 SOM provides a Status LED signal for use on a carrier board. The Status LED
indicates the status of the SOM boot process or Safe Mode and can be used to report software
errors.
Status LED Signal Definitions
Table 1-17 describes the Status LED pins and signals on the sbRIO-9651 SOM connector.
Status LED Implementation on the Reference Carrier
Board
Figure 1-8 shows a schematic design for the Status LED implementation on the reference carrier
board.
Figure 1-8.
Status LED Reference Schematic
Refer to the
STATUS_LED
section of the
NI sbRIO-9651 System on Module OEM Device
Specifications
for more information about the behavior of the Status LED signal.
Table 1-17.
Status LED Signal Definitions
Signal Name
Dedicated
SOM Pin #
Direction
*
I/O
Standard
Description
STATUS_LED
14
O
LVTTL
Status LED indicator.
*
I/O direction is with respect to the sbRIO-9651 SOM.
S
TATU
S
_LED
2
1
D
S
7
YEL
2
R127
2
1
3
57 0.5%
1/16 W