36
IC2 LC72137-D
(MAIN BOARD)
12
11
10
9
8
7
6
5
4
3
2
1
13
14
15
16
17
20
21
UNLOCK
DETECTOR
POWER ON
RESET
UNIVERSAL
COUNTER
CCB
I/F
NC
CE
DI
CL
DO
XOUT
22 NC
AOUT
XIN
AIN
PD
VSS
VDD
B04
FMIN
AMIN
B01
B02
B03
I01
I02
IFIN
PHASE
DETECTOR
CHARGE
PUMP
REFERENCE
DIVIDER
SWALLOW
COUNTER
1/16,1/17
4BITS
12BITS
PROGRAMMABLE
DIVIDER
DATA SHIFT REGISTER
LATCH
1/2
18
19
IC301 TDA7442D
(MAIN BOARD)
79dB CONTROL
MUTE
SPKR
ATT
FIX
VAR
OFF
TREBLE
MIXING
AMP
EFFECT
CONTROL
LPF
9KHz
SUPPLY
Vref
L+R
PS1
90Hz
PSEUDO
MUSIC
MUSIC/
PSEUDO
L-R
OFF
OFF
MIXING
AMP
TREBLE
BASS
BASS
SURR
SURR
VAR
FIX
I2C BUS D LATCHES
79dB CONTROL
SPKR
ATT
MUTE
1
2
3
4
5
6
7
8
16
17
18
19
20
21
22
23
24
25
26
27
28
15
14
13
12
11
10
9
BOUT(L)
BIN(L)
BIN(R)
IN(L)
IN(R)
BOUT(R)
TREBLE(L)
TREBLE(R)
LP
PS1
DIG-GND
SCL
SDA
CREF
V
S
AGND
ROUT
LOUT
R_IN4
R_IN3
R_IN2
R_IN1
L_IN1
L_IN2
L_IN3
L_IN4
MUXOUTL
MUXOUT(R)
31.5dB
CONTROL
31.5dB
CONTROL
