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IC201 AN8789FB(4ch. DC/DC Coverter)
Absolute
va
lu
e
Absolute
va
lu
e
Absolute
va
lu
e
Absolute
va
lu
e
Power
Off
Ripple
filter
Switching
circuit
Ther
ml
shut-do
wn
Quick
charge
circuit
Starter
Triangular
wave
Starter Switching
Initial Setting
BTL
BTL
BTL
BTL
37
36
27
26
25
24
29
30
31
32
28
34
3
35
39
9
1
2
38
40
5
44
42
41
33
15
43
17
16
18
19
20
21
22
23 14 11
12
7
6
8
4
10
TB
PV
CC1
FO+
FO=
TR+
TR=
TV+
TV=
RESE
T
MRST
EMP
V
SEN
ST
AR
T
CT
SP+
SP=
CLK
POWER
OUT
PWMG
I
OUT
PV
CC2
I
CONT
DRV
CC
IN
FO
IN
TR
LDON
V
REF
IN
SP
PC
IN
TV
TR
VST
OP
AV
DD
CRIP
SV
CC
IN
FB
SPR
O
AREF
DED
Max. value
PWM
IC502 LA4533M(Stereo Headphone AMP)
POWER
SWITCH
MUTE
CIRCUIT
Amp1
Amp2
BIAS
POWER
SWITCH
IN 1
PRE GND
IN 2
REF
MUTE
SWITCH
OUT 1
POWER GND
OUT 2
VCC
1
3
2
4
5
9
8
7
6
10
DECODER
A0-A15
VCC
GND
CE
OE
WE
UB
LB
I/O0-I/O7
Lower Byte
I/O8-I/O15
Upper Byte
I/O
DATA
CIRCUIT
CONTROL
CIRCUIT
COLUMN I/O
64K x 16
MEMORY ARRAY
11
12
6
41
17
40
39
IC703 IS61LV6416(CMOS Static RAM)
IC BLOCK DIAGRAM & DESCRIPTION
