Sony HCD-EC50 - Page 32

3232
HCD-EC50
HCD-EC50
• IC Block Diagrams
IC402 BA5947FM-E2
– BD83S Board –
1
LEVEL SHIFT
MUTING
D
15
16
+
–
+
–
DD
17
18
D
19
20
VREF
21
22
23
24
25
26
27
28
PREVCC OPOUT OUTVREF CH4CAPA CH4IN CH3FIN CH3RIN GND MUTE POWVCC CH3OUTF CH3OUTR CH4OUTF CH4OUTR
OPIN–
2
OPIN+
INTERFACE
14
13
D
12
11
D
10
9
8
7
6
CH2FIN
CH2RIN
GND
5
4
CH1FIN
CH1RIN
VREFIN
POWVCC
CH2OUTR
CH2OUTF
CH1OUTR
CH1OUTF
INTERFACE
D D
3
SW
INTERFACE
IC401 BD3881FV
– MAIN Board –
28
REC1O
27
REC1N
26
REC2N
25
REC2O
24
INC2
23
INC1
22
INB2
21
INB1
20
INA2
19
INA1
18
OUT1
17
BAS1
16
OUT2
15
BAS2
BASS
BASS
13
CONT
14
VEE
12
VDD
11
TRE2
10
TRE1
TREBLE
TREBLE
7
VOLIN1
8
VOLIN2
9
GND
VOLUME
VOLUME
6
PB1O
LOGIC
CONTROL
5
PB2O
4
PB2N
1
PB1N
2
PB1P
3
PB2P
IC801 LV23003VA
– MAIN Board –
1
AM RF-IN
3
FM-MIX
2
REG
6
VCC1
4
GND1
AM
RF
AM
MIX
AM
DET
AM
IF
FM
DET
FM
IF
SD
FF
VCO
FF
FF
ST
TRIG
STSW
FM
MIX
FM
OSC
AM
OSC
OSC
BUFFER
FM
S-METER
DECODER
PHASE
COMPARATOR
MUTE
PROGRAMMABLE
DIVIDER
REFERENCE
DIVIDER
UNLOCK
DETECTOR
SWALLOW
COUNTER
POWER ON
RESET
DATA SHIFT
REGISTER
LATCH
PHASE
DETECTOE
CHARGE
PUMP
UNIVERSAL
COUNTER
5
AM-MIX
7
AMIF-IN
8
FMIF-IN
9
P-DET
10
P-COMP
11
FM-DET
12
L-OUT
13
R-OUT
14
VSS
FM
RF
36
FM RF-IN
35
GND2
34
FMRF-OUT
33
VCC2
30
BO2
29
BO1
32
FM-OSC
31
AM-OSC
28
A-OUT
27
A-IN
23
DET-OUT
15
CE
16
DI
17
CL
18
DO
22
MPX-IN
19
XIN
20
XOUT
21
VDD
26
PD
25
AGC
24
AM LOW-CUT
LOW-PASS
FILTER
AGC
IF
BUFFER
PIROT
DET
CCB
I/F