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Aiwa XP-V420 Service Manual page 20

Compact disc player
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IC DESCRIPTION-2/2 (MN101C439-AE)-1/2
Pin No.
Pin Name
1-4
COM3-0
5
VLC3
6
VLC2
7
VLC1
8
VDD
9
OSC2
10
OSC1
11
VSS
12
XI
13
XO
14
MMOD
15
VREF-
16
K-FUNC
17
K-P/S
18
ACIN
19
VDIN
20
K-RMC
21
SWDO
22
SWEASS
23
SWR/H
24
VREF+
25
SWIL
26
PC
27
CD-RW
______________
28
CD-RW
29
SUBQ
30
SQCK
31
BEEP
32
RST
33
NRST
34
STAT
35
MLD
36
MDATA
37
MCLK
38
BLKCK
39
RSENSOR
40
AHC-4/5
41
_____________
42
PU-ON
________________
43
EASSON
44
DSL2
I/O
O
LCD common.
LCD power supply.
O
Microprocessor main clock oscillator output. (Not connected)
I
Microprocessor main clock oscillator input.
Ground.
I
Sub-clock oscillator input.
O
Sub-clock oscillator output. (Not connected)
I
Processor mode is not used. Connected to VSS.
VSS.
I
Function key input.
I
PLAY, STOP KEY input.
I
AC adapter detection.
I
Battery voltage detection.
I
Wired remote control input.
I
Digital out ON/OFF input. L= ON.
I
Select input of EASS mode. Refer to A/D value table.
I
Resume/hold switch input.
VCC.
I
Limit switch input.
O
Power off output of CD servo driver. L= Power off.
O
CD-RW playback gain-up select output. H= Gain-up.
O
CD-RW playback gain-up select output. L= Gain-up.
I
H/A power-down output.
O
Gain-up select output by EASS. During EASS ON= L.
O
Buzzer output of headphones.
Microprocessor reset input.
O
DSP reset output.
I
STAT input of DSP.
O
MLD output of DSP.
O
MDATA output of DSP.
O
MCLK output of DSP.
I
BLKCK input of DSP.
I
Wireless remote control sensor signal input.
I
Select input of AHC-4 or AHC-5. AHC-4=H. AHC-5=L.
Not used.
O
Power down output of H/A.
O
Select output of gain-up by EASS. During EASS ON= L.
O
DSL2 control output of headphones. DSL2= H. DSL1/OFF= L.
Description
-20-

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