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3 7 63 1515 0
6-32.
IC BLOCK DIAGRAMS
IC103
CXA2581N-T4 (BD BOARD)
LD
1
APC
PD
2
3
EQ IN
AC
4
AC SUM
SUM
GND
5
A
6
7
B
C
8
D
9
gm
F
10
gm
E
11
APC-OFF(Hi-Z)
SW 12
DVCC
13
TE
L 13942296513
DVC
14
RFAC
15
µPC1330HA (MAIN BOARD (1/3))
IC302
1
2
SW R1
GND
IC11
LA1845 (MAIN BOARD (3/3))
24
23
22
ALC
AM
AM
MIX
OSC
BUFF
LEVEL
DET
S-CURVE
www
FM
FM
IF
DET
.
1
http://www.xiaoyu163.com
RW/ROM
VC
VCC
VOFST
RW/ROM
B
C
A
VC
D
VOFST
VC
RW/ROM
RW/ROM
RW/ROM
(H/L)
AVC
DVC
VOFST
DVC
VC
DVC
INVERTER
COMPARATER
3
4
5
6
7
SW P1
CONT
GND
VCC
SW P2
21
20
19
18
17
AM
RF.AMP
AGC
AM
AM
IF
DET
AM/FM
COMP
IF
BUFF
TUNING
x
ao
y
DRIVE
REG
GND
i
2
3
4
5
6
7
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8
12
DC_
OFST
RFDCI
11
DVCC
11 RFDCO
DVC
VC
10
VC
26 RFC
EQ
25 VFC
24 BST
EQ
ON/OFF
AC
23 RFG
VCA
VCC
22 VCC
21
CEI
VCC
CE
20
VC
19 TE_BAL
RW/ROM
DVCC
18 TE
RW/ROM
DVC
17 FEI
DVCC
Q Q
3
6 7
1 3
16 FE
8
9
GND
SW R2
16
15
14
13
DECODER
PILOT
ANTI-BRIDIE
CANCEL
STEREO
P-DET
φ
SW
VCO
FF
FF
FF
PILOT
π
304KHz
38k
19K∠
2
19K∠0
DET
u163
VCC
.
8
9
10
11
2 9
9 4
2 8
1 5
0 5
8
2 9
9 4
m
co
12
HCD-VP700
9 9
2 8
9 9
63
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