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External Speakers
(Depending on model)
EXTERNAL
SPEAKER OUT
STEREO
(8 )
VOLUME
CONTROL
Control port for Speaker out
+
-
RIGHT
LEFT
• 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.
or
UP
DOWN
Method of volume control port
• Cable Spec.
/ UP / DOWN
Each up/down pins
are connected to CPU
with pull up resistor
respectively.
CPU detects
transition from 3.3 V
to
level for
volume control.
9
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