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External Speakers
(Depending upon model)
EXTERNAL
SPEAKER OUT
or
SPEAKER OUT
LINE OUT
or
AUDIO
LINE OUT
VOLUME
CONTROL
Control port for Speaker out
+
-
GND
RIGHT
LEFT
GND
: Depending upon model
• Use only with the 3 pole 3.5 mm stereo jack.
• Do not connect your headphones or earphones to
the port for connecting an external speaker.
14
UP
DOWN
Method of volume control port
(Depending upon model)
• Cable Spec.
GND / UP / DOWN
Each up/down pins
are connected to CPU
with pull up resistor
respectively.
CPU detects transition
from 3.3 V to GND
level for volume
control.
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