
AV-S77
AV-S77
25
■
BLOCK DIAGRAM
Input Selector Unit & DSP Unit
14
Selector IC
IC303 TC4052BF
IC307
IC307
4
11
5
12
1
3
13
L
R
Mute
Mute
Digital Volume
IC304 TC9482L
Selector IC
IC306 LC78212
DSP-IC
IC4 YSS918D-F
IC6 ADC/DAC
DSP P.C.B.
MAIN P.C.B.
CS4227-KG
IC8
IC9
IC8
IC9
RIN-
RIN+
LIN+
LIN-
Selector IC15
74HC153FP
Logic IC2
74HC02
DIR IC3
YM3436DK
PLL Cont
Q1 / Q2
ADOUT
RAM IC7
IS61C1024-20J
FL
FR
LFE
RL
RR
15
14
16
DATA
CLK
STB
14
13
15
CLK
DATA
CE
10
9
ISEL-A
ISEL-B
22
7
19
4
3
26
20
6
23
25
24
34
23
26
32
33
36
10
11
25
12
22
21
13
10
11
9
3
5
7
8
1
(30)
(28)
(29)
45
46
47
1
7
8
10
37
LOCKN
CD0 / CCK
CLD
BC
WC
256FS
DSP-Master Clock / Data
L
R
L
R
TV
AUX
VCR
THROUGH
FL
RR
RL
LFE
FR
4
(27)
6
8
4
2
8 (2)
6 (4)
7 (3)
UPC4570
IC308
DSP Control Signal
6
4
6
1
6 7
7
6
2
2
1
1
6 (2)
7 (1)
6
7
2
1
6
7
2
1
L
R
L
R
CB2
4
~
6
CB2
7
CB2
A
~
G
CN306
6
~
8
CN306
5
~
7
L
R
CT
LF
RL
RR
M-SENSOR
CN306
3
6
Signal Sensor
IC10
UPC4570
IC11
UPC4570
IC11
UPC4570
IC309
2
21
20
22
26
24
23
25
IC12
UPC4570
IC12
UPC4570
C
S
W
FL
FR
RL
R
R
6CH INPUT (J model only)
UPC4570
68
7
6
8
8
42
4
4
2
2
UPC4570
UPC4570
MUTE
HPSW
68
6
8
SW-PRT
SP-RY1
POWER
NIGHT
Q302
Q300
IC
316
Q307
Bass Boost
68
12
3
4
B
67
8
90
A
C
5
4
2
68
42
42
4
2
SP-RY2
UPC4570
DIGITAL
2
DIGITAL
1
1
2
3
4
1
2
1
2
Speaker Lch
Speaker Rch
CN310
CN304
CN305
FL-
FR-
FL
FR
JK310
IC
316
UPC4570
UPC4570
IC
312
IC
312
IC
310
IC
310
IC
311
IC
311
UPC4570
UPC4570
UPC4570
UPC4570
IC
301
IC
301
IC
302
IC
305
IC
302
IC
305
From
CN9