Aiwa HS-TX516 Service Manual page 8

IC DESCRIPTION
IC, LC72348G-9A01
Pin No. Pin Name
1 XOUT
2 TEST2
3~6 PA3~PA0
7~8 PB3~PB2
9~10 PB1~PB0
11 PC3(FM/AM)
12 PC2(TV OUT)
13 PC1(S-Bass)
14 PC0(DES 1)
15 PD3(DES 2)
16 PD2(DES 3)
17 PD1(TAPE)
18 INT/PD0
19 VC/PE1
20 BEEP/PE0
21 PF2
22 AD11/PF1(POW CH)
23 AD10/PF0(REMOTE)
24 VSS
25 PG3(POW SW)/S20
26 PG2(HOLD)/S19
27 PG1(MUTE)/S18
28 PG0(TU OUT)/S17
29 PH3(TU IN)/S16
30 PH2(PRE OFF)/S15
31 PH1(NC)/S14
32~44 PH0,S12~1/S13
45~48 COM1~4
49~52 DBR4~1
53 RES
54 HCTR
55 VDD
56 FMIN
57 AMIN
58 VSS
I/O
O Crystal oscillator (75kHz) pin.
I Connected to ground.
I Key input. H:Key exist, L:No Key. (Not Used)
O Not used.
O Key output. H:Scan, L:Standby. (Not used)
O Output band. H:FM band, L:AM band.
O Output band. H:FM/TV band, L:AM band. (Not used)
O Output S-Bass. H:Flat, L:S-Bass.
I Input destination.
Destination
USA
I EUROPE
EAST EUROPE
GENERAL
I USA WIDE 1
USA WIDE 2
JAPAN
I Input tape display. H:Display ON, L:Dispaly OFF.
I Input backup while HACT status. H:Normal, L:Backup.
- Not used.
O Output beep sound.
I Input backup. H:Normal, L:Backup.
I Input power check (A/D).
I Input remote controller (A/D).
- Connected to ground..
O Output power. H:OFF, L:ON.
I Input hold key. H:Hold OFF, L:Hold ON.
O Output mute. H:Mute OFF, L:Mute ON.
O Output tuner/tape. H:Tape, L:Radio.
I Input [TUNED] display. H:Display OFF, L:Dispaly ON.
O Output PRE OFF. H:PRE OFF, L:PRE ON.
O Not connected.
O Output LCD segment.
O Output LCD common.
- LCD power supply.
I Input reset.
O DC-DC convertor.
- Positive power supply.
I Input FM broadcast.
I Input AM broadcast.
- Connected to ground.
Description
14Pin 15Pin
L H
L L
L L
L H
H H
H H
H L
– 8 –
16Pin
L
H
L
H
H
L
H