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DESIGN
12/14
MCS LOGIC
CHECK-1
UPDATE
MUTE
REV.
5
C
A
6
JACK
DATE
6
32
1
1 5
2
KEY MATRIX & MIC IN
3
7
MLN7400EV
C
MUTE
SW
MIC
CHECK-2
REMARK
B
A
D
4
2003.11.18
Disable
MUTE
CUSTOMER
E
D
E
MAX4468EKA_SOP8
U18
1
GND
3
INN
INP
2
MBIAS
45
NC
OUT
8
SHDN
6
7
VCC
VCC_33A
SHEET
Enable
B
4
R160 390
PGM
SW5
TACT_SW
12
AGND
1KR168
2
VCC_33A
J5
MICIN
1
2
3
270R157
12
0.1uF
C188
VCC_33A
AGND
TACT_SW
SW4
PLAY
1
12
TACT_SW
SW15
MODE
12
TACT_SW
SW14
ENTER
12
SKIP-
SW13
TACT_SW
12
ESP
SW11
TACT_SW
12
TACT_SW
SW10
SKIP+
12
TACT_SW
VOL_UP
SW9
2
STOP
SW7
TACT_SW
12
TACT_SW
SW12
VOL_DN
12
TACT_SW
SW6
EQ
390R159
AGND
VCC_33A
1KR153
TACT_SW
SW8
MENU
1
R163 820
R154 1K
AGND
R161 560
R158 390560R162
R171 20KC89 0.1uF
VCC_33A
R152 1K
R167 2.2K
270R155
R156 270
AGND
100KR165
TC3410uF
21
R164 1K
AGND
47pFC88
C87 0.01uF
R169 100K
4
5
6
R166 4.7K
VCC_33A
AGND
AGND
100KR170
SHDN
ADIN3
ADIN2ADIN1ADIN0
SW_DPDT
SW16
1
2
3