LG GX500 - Backing Up and Restoring Your Phone’s Information

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Only for training and service purposes
3. TECHNICAL BRIEF
GX500 Operational Description Revision A
LG Electronics 54/143 LGE Property
3.8 Keypad Switching & Scanning
The keypad interface is a peripheral which can be used for scanning keypads up to 3 rows (outputs from Port
Control Logic) and 2columns (inputs to PCL). The number of rows and columns depend on settings of the PCL.
Figure 3-16 Key pad part key matrix
VA803VA801VA802
SIDEKEY_3P_Contact
CN801
3
2
1
KEY_ROW0
KEY_COL0
KEY_COL1
VOLUME SIDEKEY
VA806 VA807VA805
CN803
4
3
2
1
KEY_ROW1
KEY_COL3
KEY_COL2
CAMERA KEY LOCK KEY
VBAT
END
SEND MENU
KEY_ROW1
KEY_COL0
KEY_COL1
END_KEY
VBAT
END
SEND MENU
KEY_ROW1
KEY_COL0
KEY_COL1
END_KEY
GX500 Operational Description Revision A
LG Electronics 54/143 LGE Property
3.8 Keypad Switching & Scanning
The keypad interface is a peripheral which can be used for scanning keypads up to 3 rows (outputs from Port
Control Logic) and 2columns (inputs to PCL). The number of rows and columns depend on settings of the PCL.
Figure 3-16 Key pad part key matrix