Aiwa CDC-X207 Service Manual page 22

IC DESCRIPTION
IC, LC72358N-9910
Pin No. Pin Name I/O
1 XIN I System clock oscillator input.
2 ~ 3 NC - Not connected.
4 E-VOL DO O Data output for electric volume.
5 E-VOL CLO O Clock output for electric volume.
6 E-VOL CE O CE output for electric volume.
7 LCD DI I LCD driver data signal input.
8 LCD DO O LCD driver data signal output.
9 LCD CLO O LCD driver clock signal output.
10 LCD CE O LCD driver CE signal output.
11 SQ OUT I Sub-code Q input terminal.
12 COIN O Command output terminal for DSP.
Transfer-out clock for command output or output terminal for Sub-code transfer-in
13 CQCK O
clock from SQ OUT.
Stereo signal input when receiving. Hi=MONO, Low=ST FM reception.
14 SD/ST I
Channel detection signal input when FM/AM seeking. Hi=detect channel
15 LOC/DX O LOC/DX switching output when in the radio seek mode. Hi=LOC, Low=DX
16 IF REQ O IF count signal request output.
17 BAND O FM/AM power switch output. Hi=AM, Low=FM
18 TU ON O Radio power switch output. Hi=Radio mode
19 ~ 21 NC - Not connected.
22 ~ 23 KS4 ~ KS3 O Initial setting diode matrix output(Not used).
24 ~ 26 KS2 ~ KS0 O Initial setting diode matrix output.
27 ~ 30 K3 ~ K0 I Initial setting diode matrix input.
31 VDD - Power supply.
32 NC - Not connected.
33 LM+ O Loading motor control terminal.
34 LM- O Loading motor control terminal.
35 FEM+ O Thread motor control terminal.
36 FEM- O Thread motor control terminal.
37 RW O RW disc control. Normal set to "Hi". Hi=NORMAL DISC, Low=RW DISC
38 LP UP O RW disc control. Normal set to "Lo". Hi=Disable playback even though
39 CD ON O CD power switch output. Hi=CD mode RW port is low
40 A-MUTE O Audio mute signal output.
41 POWER CONT O Power control signal output.
42 ST-BY MUTE O ST-BY mute signal output.
43 POWER MUTE O Power mute signal output.
44 BEEP O BEEP output(3 kHz, 50 ms).
45 DFP IN I Front panel detection.
46 DRF I "Detect RF" RF level detection input. Pulled up when not used.
47 WRQ I Sub-code Q output standby input terminal.
Description Pin No. Pin Name I/O
48 RWC O
49 CD RES O
50 SW3 I
51 SW2 I
52 SW1 I
53 R-ENCOD2 I
54 R-ENCOD1 I
55 LCD-DI I
56 REMOTE IN I
57 LED O
58 ~ 60 NC -
61 INSIDE I
62 TEST I
63 NC -
64 L IND I
65 PH.MUTE I
66 RESET I
67 HOLD I
68 SNS I
69 NC -
70 IF I
71 EO3 -
72 SUBPD -
73 VDD -
74 AM OSC I
75 FM OSC I
76 VSS -
77 EO2 O
78 EO1 O
79 NC -
80 XOUT O
-22-
Description
Read / write control output terminal.
DSP reset output terminal.
Disc detection / chuck or release disc detection.
12 cm disc detection / 12 cm disc ejection end detection.
Leading motor start detection.
Rotary encoder input 2.
Rotary encoder input 1.
LCD driver data signal input.
Remote controller input. Pulled up when not used.
Security LED flashing output. H: No light on, L: Light on.
Not connected.
Pick up inner track position detection.
CD test mode. Pulled down when not used.
Not connected.
Voltage input for level indecator. Pulled down when not used.
External mute control. Low=-20dB mute. Pulled up when not used.
System reset. Low= system reset.
ACC (accessory power) ON/ OFF input. OFF=fault mode.
Backup detection.
Not connected.
IF count signal input (FM / AM).
Not used.
Not used.
Power supply.
AM channel transmission input.
FM channel transmission input.
Connected to GND.
Not used.
Error out from charge pump (for FM / AM).
Not connected.
System clock oscillator output.