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7.12. Main (Karaoke) Circuit
1
2
3
SCHEMATIC DIAGRAM - 11
A
A
MAIN (KARAOKE) CIRCUIT
IO
B
DS
IO
C
IO
IO
IO
MI
MI
MI
MI
D
E
F
G
IO: MAIN (I/O EXPANSION): SCHEMATIC DIAGRAM - 1
FA: MAIN (FAN LED): SCHEMATIC DIAGRAM - 2
DS: MAIN (DSP): SCHEMATIC DIAGRAM - 3
MI: MAIN (MICON): SCHEMATIC DIAGRAM - 6 ~ 7
H
1
2
3
4
5
6
: +B SIGNAL LINE
: CD AUDIO INPUT SIGNAL LINE
DGND
IC4802
R4820
C0FBAY000032
100
A/D CONVERTER
R4835
100
DSP_SDO1_A
RX4802
D1H81034A042
8
SCLK
1
2
9
SDTO
RX4801
D1H81014A042
3
4
10
MD0
7
8
5
6
11
MD1
5
6
7
8
12
FMT
LB4805
C4816
1
3
4
13
AINL
J0JDC0000104
C4821
1
MIC_IN
1
2
AINR
14
R4832
100K
AGND
LB4803
PW_SW5R4V
LB4804
PW_SW3R3V
G_DSP_MCK
G_DSP_BCK
DSP_WCK
DSP_SDO0
4
5
6
7
8
9
: TUNER/AUX/MIC AUDIO INPUT SIGNAL LINE
R4823
100
7
LRCK
R4822
100
MCLK
6
C4820
0.1
DGND
5
C4819
10
4
VD
C4818
10
VA
3
C4817
0.1
AGND
2
C4823
0.1
VREF
1
C4825
10
J0JCC0000317
J0JCC0000317
R4834
0
R4830
0
R4829
0
R4831
0
7
8
9
29
10
11
12
G_DSP_BCK_A
DS
DSP_WCK_A
DS
DSP_SDO0_A
DS
SA-MAX670P MAIN (KARAOKE)
10
11
12
13
14
A
B
C
D
E
F
G
CIRCUIT
H
13
14
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