Aiwa HS-TX426, Руководство по обслуживанию, Страница: 17 / 27

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IC DESCRIPTION
IC, LC72348W-9A84
Pin No. Pin Name I/O Description
1 XOUT O Crystal oscillator (75kHz) pin.
2 TEST2 I Connected to ground.
3 PA3 I Key return signal input pin.
4 PA2 I Key return signal input pin.
5 PA1 I Key return signal input pin.
6 PA0 I Key return signal input pin.
7 PB3 O Key source signal output pin. (Not used)
8 PB2 O Key source signal output pin. (Not used)
9 PB1 O Key source signal output pin.
10 PB0 O Key source signal output pin.
11 PC3 (FM OUT) O FM signal output control pin. H:FM/TV/WEATHER band, L:AM band/Standby/Telecom mode.
12 PC2 (TV OUT) O
TV/WEATHER signal output control pin.
H:TV(7~13ch)/WEATHER band, L:AM/FM/TV(2~6ch)/Standby/Telecom mode. (Not used)
13 PC1 (S-BASS) O S-BASS circuit signal output control pin. H:S-BASS OFF, L:S-BASS ON/Standby.
Input destination.
14 PC0 (DES1) I Destination 14Pin 15Pin 16Pin
USA L H L
EUROPE L L H
15 PD3 (DES2) I GENERAL L H H
USA WIDE 1 H H H
USA WIDE 2 H H L
16 PD2 (DES3) I JAPAN H L H
17 PD1 (TAPE) I Telecom detect signal input pin. H:Tape display ON, L:Tape display OFF.
18 PD0/INT I Backup detect signal input pin while HALT status. H:Normal, L:Backup.
19 PE1/ SEEKOUT O SEEK mode output pin. OPEN:Mute OFF, SEEK, L:Mute ON.
20 PE0/BEEP O BUZZER output pin.
21 PF2/ADI3 I Backup detect signal input pin. H:Normal, L:Backup.
22 PF1/ADI1 I Input power check (A/D).
23 PF0/ADI0 (REMOTE) I Input remote controller (A/D).
24 VSS - Connected to ground.
25 S20/PG3 (POWER- SW) O AMP circuit control signal output pin. H:AMP circuit OFF, L:AMP circuit ON.
26 S19/PG2 (HOLD) I Main key hold SW input pin. H:Hold OFF, L:Hold ON.
27 S18/PG1 (MUTE) O Mute circuit control signal output pin. H:Mute OFF, L:Mute ON. (Not used)
28 S17/PG0 (TU OUT) O Tuner/Tape select control signal output pin. H:Tape, L:Radio.
29 S16/PH3 (TU IN) I TUNED detect signal input pin. H:TUNED display OFF, L:TUNED display ON.
30 S15/PH2 (PRE SW) O PRE-AMP circuit control signal output pin. H:PRE-AMP circuit OFF, L:PRE-AMP circuit ON.
31 S14/PH1 (LIGHT SW) O LED circuit control signal output pin. H:LED circuit ON, L:LED circuit OFF.
32 S13/PH0 O LCD driver out.
33 S12 O LCD driver out. www. xiaoyu163. com
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