Keypad - LG LG9200 Service Manual

Keypad

• KEYPAD Scanning Scheme (qwerty-key).
The qwerty-key is connected to Calypso(DBB) using two key mux chips and:
- KBR (4:0) input pins for row lines
- KBC (4:0) output pins for column lines
R601
KBR(1)
680
R602
KBR(2)
AVL5M02-200
680
R603
VA602
KBR(3)
AVL5M02-200
680
VA604
AVL5M02-200
VA611
R604
KBR(4)
680
R605
KBR(0)
AVL5M02-200
680
VA608
AVL5M02-200
VA606
KB614
KB613
KB606
KB608
KB615
KB618
KB617
R606
KB619
KBC(0)
680
AVL5M02-200
VA612
KB607
KB620
KB605
R607
KB604
0
KB603
KB601
KB602
R609
KB616
KBC(1)
680
AVL5M02-200
VA609
KB628
KB626
R611
CAPS_LOCK
KB624
NA
KB622
KB625
KB627
R612
KB623
KBC(2)
680
AVL5M02-200
VA605
KB632
KB621
KB631
KB630
KB629
KB610
KB609
R613 680
KB612
KBC(3)
AVL5M02-200
VA613
SW601
Camera key
KB611
R614 R615
KBC(4)
680 NA
AVL5M02-200
R617
VA610
SHIFT_KEY
0
Keypad Scanning Scheme
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3. Technical Brief
FL601 CSPEMI306A
A1 C1
FILTER1-1 FILTER1-2
A2 C2
FILTER2-1 FILTER2-2
A3 C3
FILTER3-1 FILTER3-2
A4 C4
FILTER4-1 FILTER4-2
A5 C5
FILTER5-1 FILTER5-2
A6 C6
FILTER6-1 FILTER6-2
3
4
5
FL602 CSPEMI608
A1 C1 6
FILTER1_1 FILTER2_1
A2 C2 7
FILTER1_2 FILTER2_2
A3 C3 8
FILTER1_3 FILTER2_3
A4 C4 10
FILTER1_4 FILTER2_4
A5 C5 17
FILTER1_5 FILTER2_5
A6 C6
FILTER1_6 FILTER2_6
A7 C7
FILTER1_7 FILTER2_7
A8 C8
FILTER1_8 FILTER2_8
3
4
5
6
7
8
10
17
R608
0
Key mux IC
R610
NA
R616
NA
R618
0
U603 CM2500-05QE
2
VCC OUTA
16
OUT1
15
IN1 OUT2
14
IN2 OUT3
13
IN3 OUT4
12
IN4 OUT5
11
IN5 OUTB
9
GND NC1
1
BGND NC2
U601 CM2500-05QE
2
VCC OUTA
16
OUT1
15
IN1 OUT2
14
IN2 OUT3
13
IN3 OUT4
12
IN4 OUT5
11
IN5 OUTB
9
GND NC1
1
BGND NC2