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ICD-SX20/SX30/SX40
• IC BLOCK DIAGRAMS
IC1001, 2001, 3002 NJM2781RB1 (TE1) (AUDIO BOARD)
IC3003 LM4903MMX/J5000273 (AUDIO BOARD)
1
2
3
4
8
7
6
5
REG
GND
V+
OUT
IN-
NOISE
REG
STBY
IN+
1
2
3
4
8
7
6
5
BIAS
VDD/2
AV=-1
VO2
GND
VDD
VO1
XSHUTDOWN
BYPASS
+IN
-IN
IC3004 AK4566VN-L (AUDIO BOARD)
7
8
14
13
12
11
10
9
28
22
23
24
25
26
27
5
6
4
3
2
1
15
17
16
18
19
20
21
AUDIO I/F
CONTROLLER
CONTROL
REGISTER
PDN
CSN
CCLK
HP AMP
MOUT
CDTI
LRCK
MCLK
BICK
SDTI
SDTO
DVDD
DVSS
HVSS
HVDD
HPR
AINL1
AINR1
AINL2
AINR2
A
VDD
A
VSS
VCOM
VREF
LIN
RIN
MIN
MOUT
MUTET
HPL
IPGA & ADC
DAC
ADC
DAC
HPF
DATT
VCOM
VREF
BOOST
IPGA
AINL1
AINL2
AINR1
AINR2
IC5003 XC9502B092AR (MAIN BOARD)
1
2
3
4
RAMP WAVE
GENERATOR1
RAMP WAVE
GENERATOR2
EXT1
VDD
FB1
PWM1
5
10
9
8
7
6
EN1
EXT2
GND
FB2
PWM2
EN2
EN1 TO
INTERNAL CIRCUIT
VREF1=0.9V
WITH SOFT START1,
EN1
VREF1=0.9V
WITH SOFT START2,
EN2
PWM/PFM
CONTROLLER1
PWM/PFM
CONTROLLER2
OSC
GENERATOR
EN2 TO
INTERNAL CIRCUIT
PWM
COMPARATOR1
PWM
COMPARATOR2
ERROR AMP1
ERROR AMP2
IC6003 NJU6366AF1 (TE1) (AUDIO BOARD)
1/2
1/2
1/2
3-STATE
BUFFER
1
3
2
6
4
5
FOUT
VDD
XXT
VSS
XT
XCONT
RF
CG
CD
A
B
C
D
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