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6-7. IC BLOCK DIAGRAMS
IC301 TA2131FL-(EL)
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
VCC
INR
INL
BEEP
OUTB
BEEP
OUTA
+B
OUTL
PWR
GND
OUTR
DET
AGC IN
BST OUT
BST NF2
LPF2
BST NF1
LPF1
VREF
VREF IN
GND
BEEP IN
BST SW
MUTE
STB
IC551 SC111257FCR2
56
55
42 41
40
CPUO
W1
V1
U1
PWM
OE
7
VM1
RO1
8
FO1
9 10
VM12
PGND1
11
RO2
12
PGND2
13
FO2
CPAIP
CPAIM
CPBIP
CPBIM
CPAO
CPB0
VM3
RO3
FO3
VM34
PGND3
RO4
PGND4
FO4
14
15
16
17
18
19
20
39 38 37 36 35
34 33 32 31 30 29
28
27
26
25
24
23
22
21
1
2
3 4
5
6
54
53
52
51
50
49
48
47
46
45
44
43
VM4
R14
F14
R13
F13
VG
VC
GND1
PWM24
F11
R11
F12
R12
VM2
PGNDW
WO
VMVW
VO
PGNDUV
UO
VMU
GND2
CPW1
CPV1
CPU1
COM
CPWO
CPVO
3 PHASE
CONTROL
BIAS
VC
PRE DRIVER PRE DRIVER
H-BRIDGE
CONTROL
H-BRIDGE
CONTROL
VC VG
VC VG
VC
VC VC
VG
PRE DRIVER PRE DRIVER
H-BRIDGE
CONTROL
H-BRIDGE
CONTROL
VC VG
VC
VG
VC VG
VC VC
PRE DRIVER