Ic Description - Aiwa XR-FD55 Service Manual

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IC DESCRIPTION -1/2 (LC8752B2A-50Y2) -1/3
Pin No.
Pin Name
1
O-CDT CLOSE
2
O-CDT OPEN
3
O-CD-RESET
4
I-CD-BLKCK
5
I-CD-SENSE
________
6
O-CDX4
7
I-RMC
_______
8
I-RESET
9
XT1
10
XT2
11
VSS1
12
CF1
13
CF2
14
VDD1
_____________
15
O-CLK SHIFT
____________
16
I-HOLD(AD)
17
I-MS(AD)
18
I-KEY1(AD)
19
I-KEY2(AD)
20
I-ENC1(AD)
21
I-ENC2(AD)
22
I-DECK SW(AD)
23
O-MD-KDATA
24
I-MD-MDDATA
25
O-MD-DSCK
26
O-CD-MDATA
27
I-CD-STAT
28
O-CD-MCLK
29
O-MD ON
30
O-METER MUTE
31
O-OPT-SEL
32
NC
33
NC
34
NC
35
NC
36
O-MD-SERCH
37
O-MD-ST
38
O-MD-RESET
39
VSS4
40
VDD4
41
I-MD-PCONT
42
I-MD-DSTB
I/O
O
CD tray close output
O
CD tray open output
O
CD reset output
I
CD sub-code clock input
I
CD sense input
Not used
I
Remote control sensor data input
I
Reset input signal
I
Crystal connect signal
O
Crystal connect signal
Ground
I
Input signal of LC oscillator
O
Output signal of LC oscillator
Power supply
O
Microcomputer clock shift switching
I
HOLD voltage input
I
Signal level input for TAPE music sensor
I
Input tact key 1
I
Input tact key 2
I
Volume control input
I
JOG control input
I
Detection in TAPE recording tub
O
MD command data output
I
MD data input
O
MD command clock output
O
CD command data output/data output for DAC
I
CD status input
O
CD command clock output/Clock output for DAC
O
MD power supply ON/OFF control output
O
METER mute ON/OFF control output
O
Switching output for MD digital input
Not connected
Not connected
Not connected
Not connected
O
MD search signal output
O
MD start output for ID
O
MD reset output
Ground
Power supply
I
Detection in abnormal MD power supply
I
MD data strobe input
Description
-51-

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