LG KG330 Service Manual page 24

Keypad
• Rotary Key scanning Scheme (Short Menu Key).
Rotary encoder generates M_EN_BDET and M_EN_ANT signals, which are connected to GPIO_4 and
GPIO_7 of DBB respectively. Depend on its direction, the Rotary Encoder Key move up or down on
screen.
M_EN_AINT
(GPIO _7)
FD_JOG_ENCODER
V_IO
CON100
R102
3K
R107
3K
C104
0.01u
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3. Technical Brief
R103
3K
R108
M_EN_BDET
3K
(GPIO _4)
C102
0.01u