Ic Block Diagrams - Sony TA-AV571 Service Manual

3-8. IC BLOCK DIAGRAMS

IC101 LC7822
1
IN 2
3
OUT
4
5
IN 6
7
OUT 8
9
IN
10
OUT 11
LEVEL SHIFT
12
VEE
CE 13 LATCH
DI
14
SHIFT RESISTOR
CL 15
IC201 LA2786
1
BPF1 NOISE NOISE LPF
FILTER
2 CH
BPF2
BALANCE
VREF 3 V REF CONTROL
DIVIDER
VR
CONTROL
S-CH DC OUT 4
C-CH DC OUT 5
L-CH DC OUT 6
R-CH DC OUT 7
VREF 8
L-IN 9 VR
R-IN 10 VR
V
SS 11
VCA VCA
VCA VCA
VCA VCA
VCA VCA
LPF
12 LPF
L-BPF1
L-BPF2 13
L-BPF3 14
15 RECT RECT RECT
DC CUT
DC CUT 16
R RECT 17
L RECT
18
VLR-TH 19
LOG
VLR-1 20
DIFF
VLR-2 21
30
29 IN
28
27 OUT
26
25 IN
24
23 OUT
22
IN IN
21
20
OUT
19 VDD
18 RESET
17
S
16 VSS
42 CLK
NOISE
GENERATOR
41 DATA
40 ENABLE
OSC OSC1
39
38 V CC
37 L-OUT
36 R-OUT
35 S-OUT
34 C-OUT
33 CMODE-CAP.
32 C-TRIM DC CUT
31 R-BPF1
30 R-BPF2
29 R-BPF3
RECT
28 DC CUT
27 DC CUT
26 L-R RECT
25 L+R RECT
24 VCS-TH
LOG
23 VCS-1
DIFF
22 VCS-2
— 19 —
IC202 LV1016
24 23 22 21 20 19 18
ADM
VDD
ADM-CONT SRAM
A
B
–
IN-FILTER
(40kHz) L–R
+
L+R
(–6dB)
DEC
1 2 3 4 5 6 7 8 9
IC301, 302 TDA7315
20 19 18 17 16 15 14 13
SPEAKER
VOL/LOUD BASS TREBLE
ATT
SERIAL BUS DECODER/LATCH
SPEAKER
VOL/LOUD BASS TREBLE
ATT
SUPPLY
1 2 3 4 5 6 7 8
IC701, 702 µPC2581V
BIAS CIRCUIT
PROTECTOR
PRE PRE
REG DRIVE DRIVE
DRIVE DRIVE
1 2 3 4 5 6 7 8 9 10 11 12 13 14
17 16 15 14 13
INV-PHASE
+ +
L+DELAY
R+DELAY
VOL/MUTE
OUT-FILTER
DC-OUT
(7k/5k)
S-TRIM
B-NR
10 11 12
12 11
9 10
15
— 20 —