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IC501 SN761056
IC303 TA2131FLIC302 NJM2173
6-8. IC BLOCK DIAGRAM
1
TE
REXT
Wpp-LPF
VREF
C
D
D-C
Iy
Ix
Jx
Jy
A
A-C
B
ADIP
FE
ABCD
AVCC
OFC-1
OFC-2
PS
LP
EQ
AGND
RFOUT
CCSL2
VC
XRST
SCK
SBUS
VREF075
PEAK
BOTM
DGND
OFTRK
S-MON
TON-C
CIG
CDN
ADIP
DVDD
PD-I
PD-NI
PD-O
43
44
TWpp
PK/BTM
Aw
CSLO
VREF075
A-C
D-C
Malfa
Mij
AwBPF
Dw
DwBPF
42
38
37
36
35
34
31
30
29
28
27
26
25
24
23
39
41
40
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
A+B+C+D
I+J
NPP
TON
CSL
Aw+Dw
TON Peak
TON Botm
ADIP
TE
TEMP
33
32
S-MONITOR
TE
RF
FE
APC
ADIP
T-ON
SERIAL
I/F
PEAK/BOTM
ABCD
Tpp/Wpp
1
14
OUT1
2
DC CUT1
3
IN1
4
MIC V+1
REG
NOISE
GND
13
DC CUT2
OUT2
12
IN2
11
MIC V+2
10
GV
9 8
7
5 6
STBY
V+
+
–
+
–
REG
BIAS
V REF
MT
SW
BST
SW
BEEP
19
20
21
22
23
24
18 17 16 15 14 13
PW
SW
12
11
10
8
7
BST1
9
BST2
654321
BST
AGC
PW
B
PW
A
ADD
TC MT
VCC1
VINR
VINL
BEEP
OUTB
BEEP
OUTA
+B
LOUT
PWR
GND
ROUT
DET
AGC IN
BST OUT
BST NF2
LPF2
BST NF1
LPF1
VREF
VREF IN
GND
BEEP IN
RST SW
MUTE
PWSTB