Ic Description - Aiwa XR-EM30 Service Manual

IC DESCRIPTION -1/3 (LC876748A-5Z32) -1/2
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Pin No. Pin Name
1 O-COCK
2 O-RWC
3 O-CDIN
4 I-WRQ
5 I-DRF
6 I-SQOUT
7 NC
8 O-MOTOR
9 O-SOL
10 O-CLOCK_SHIFT
11 I-RESET
12 NC
13 O-DECK
14 VSS1
15 XIN
16 XOUT
17 VDD1
18 I-HOLD
19 I-VOL
TE
L 13942296513
20 NC
21 I-SW-TP
22-23 I-KEY2 - I-KEY1
24 I-CDTSW
25 NC
26 I-AS
27 NC
28 I-RDCL
29 I-RMC
30 NC
31 NC
32-36 NC
37-44 O-G1 - O-G8
45 O-P1
46 VDD3
47-50 O-P2 - O-P5
51 VEE
52-66 O-P6 - O-P20
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67 I-FMW
68 I-LW
69 NC
.
70 I-AM10K
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I/O/C/P
O CD control Q code clock signal output.
O CD control command LAT signal output.
O CD control command data signal output.
CD control SCOR signal input.
I
I CD control focus ok input.
I CD control Q code input.
O NC
O Motor control output.
O Cass. Play control signal output.
O Clock shift output for micro-computer when using tuner.
I Reset input for MICON.

NC
O Deck control output.

Connect to GND.

Main clock input 9.43MHz.

Main clock.

Digital power supply pin.
I Hold input.
I Volume control input.

NC
I Deck meahanism SW AD input.
I Key AD input 1-2.
I CD mecha. Switch input.
I NC
I Cass. Deck AS switch signal input.

Not use.
I Not use.
I System Remote control signal input.

Not use.

Not use.

Not use.
O VFD driver control data signal output.
O VFD driver control data signal output.

Digital power supply pin.
O VFD driver control data signal output.

Connect to GND.
O VFD driver control data signal output.
I FM selection initialisation resistor connect.
x ao u163
I LM selection initialisation resistor connect.
y

Not use.
i
I AM(10k) selection initialisation resistor connect.
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2 9
8
Description
Q Q
3 6 7 1 3 1 5
co
.
-47-
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9