9-2
2. Video/Audio Block Diagram
DIGIT
AL
A
UDIO OUT
(OPTICAL)
DIGIT
AL MAIN CB
A UNIT
T
O
SYSTEM CONTR
OL
BLOCK DIA
GRAM
TO
SYSTEM
CONTR
OL
BLOCK
DIA
GRAM
T
O
DIGIT
AL
SIGNAL PR
OCESS
BLOCK DIA
GRAM
VIDEO SIGNAL
AUDIO SIGNAL
CVBS-
A
UDIO(L)-IN
CVBS-
A
UDIO(R)-IN
JK3706
Q3803
MUTE
HP(L)
HP(R)
SPDIF
HP-DET
HP-MUTE
Q3805
Q3804
MUTE
MUTE
DRIVE
DIF-OUT1
DIF-OUT2
IF-A
GC
IC9001
10
22
11
IF-A
GC
5
OUTPUT
I/F
DSP
/FILTER
PGA
ADC
RF AGC
JK9301
ANT
-IN
(DIGIT
AL/ANALOG TV TUNER)
CVBS-
VIDEO-IN
JK3705
CVBS-VIDEO-IN
SP-MUTE
CN3801
A
UDIO(L)-OUT
A
UDIO(R)-OUT
2
SP(L)-
1
SP(L)+
HEADPHONE
JA
C
K
JK3708
CVBS-
A
UDIO(L)-IN
CVBS-
A
UDIO(R)-IN
SP3801
SPEAKER
L-CH
1
2
3
25
23
PO
WER
ST
A
G
E
PO
WER
LIMIT
GAIN
CONTR
OL
AMP
PO
WER
ST
A
G
E
MODULA
T
O
R
18
20
12
IC3801
(A
UDIO AMP)
CONTROL LOGIC
FAULT LOGIC
PWM
LOGIC
PO
WER
LIMIT
GAIN
CONTR
OL
AMP
MODULA
T
O
R
PWM
LOGIC
SP(R)-
SP(R)+
PL22.06BLVA
