Anaren A2530E24A, User Manual

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Page 26 of 45 AIR BoosterPack
– User’s Manual
Release Date 11/2/12
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Sensor/LED Power Control (S3)
These DIP switches are used to control power to specific devices on the BoosterPack
board. The primary purpose is to provide a method for turning off unused devices to
conserve power. For example, an application not using the Color Light Sensor would
benefit from turning off position 3, since the light sensor is relatively power hungry. Another
example would be an application that utilizes the LEDs but the user turns off positions 1 and
4 to reduce power consumption (no code change necessary).
The default state of all DIP switches is ON (closed).
Table 4 – Sensor/LED DIP Switch Settings (S3)
Switch Position Signal Name Description
S3
1 D1,2_EN
Power control for the on-board Red and Green
LEDs (D1 and D2, respectively). Does not impact
LEDs on the LaunchPad boards.
ON (closed): Red and Green LEDs are enabled
and may be turned on by driving
their control signals high.
OFF (open): Red and Green LEDs are disabled
and cannot be turned on, regardless
of the state of their control signals.
2 TEMP/ROM_EN
Power control for the IR Temperature Sensor and
EEPPROM on the I
2
C bus.
ON (closed): Power is applied to these devices.
OFF (open): The devices are powered down.
3 LGT_EN
Power control for the I
2
C RGB Light Sensor.
ON (closed): Power is applied to the device.
OFF (open): The device is powered down.
4 D3,4_EN
Power control for the on-board Yellow and Tri-
Color LEDs (D3 and D4, respectively). Does not
impact LEDs on the LaunchPad boards.
ON (closed): Yellow and Tri-Color LEDs are
enabled and may be turned on by
driving their control signals low.
OFF (open): Yellow and Tri-Color LEDs are
disabled and cannot be turned on,
regardless of the state of their
control signals.