Aiwa CR-LD100 Service Manual page 12

IC DESCRIPTION
IC, µPD1793GK
Pin No. Pin Name
1 VAD SEL
2 VAD SEL2
3 AM IF
4 FM IF
5 VDD 1
6 PLL REG
7 PLL OUT
8 PLL OUT
9 OSC L
10 OSC H
11 GND
12 TEST
13 RESET
14 ST IN
15 E
16 U
17 W
18,19 -
20 REQ
21 P OUT
22 TU OUT
23 AM OUT
24 FM OUT
25 TV OUT
26 NSB OUT
27 TV/FM OUT
28 - 30 -
31 BEEP
32 VDD 0
33 - 34 CAP 0 - 1
35 - 36 REG 0 - 1
37 - 38 CAP 2 - 3
39 REG 2
40 - 43 COM 0 - 3
44 - 60 LCD 0 - 16
61 BAT SEL
62 TV SEL
63 BASS SEL
64 -
65 MUTE OUT
66 SP CANCEL
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I/O
I "H" : voltage detection at Vdd = 3.0V "L" : at Vdd 1.5V
I No using
I Input IF counter
I Input IF counter
- Input power supply
- Input PLL regulator
O Output PLL charge-pomp
O Output PLL charge-pomp
I Input OSC low
I Input OSC high
- GND
- No using
I "L" : system reset
I "H" : stereo indicator turn on
I Version select. "L" : JAPAN, "H" : EUROPE, "L" USA, " H" : USA WIDE
I Version select. "L" : JAPAN, "L" : EUROPE, "H" USA, " H" : USA WIDE
I At USA WIDE "L" : TV & WEATHER, "H" : TV/WEATHER
- No using
O "H" : IF output
O Output high voltage at TUNER & TIMER & ALARM operating
O Output high voltage at TUNER operating
O Output low voltage at TUNER operating AM band
O Output low voltage at TUNER operating FM band
O Output low voltage at TUNER operating TV band
O Output low voltage at TUNER operating NSB band
O Output low voltage at TUNER operating FM/TV band
- No using
O Out BEEP sound
- Input power supply
- Connect capacitor for LCD
- LCD regulator
- Connect capacitor for LCD
- LCD regulator
O LCD common
O LCD segment
I Selection of voltage detection "H" : using 76 "L" : using 78
I Selection of TV
I Selection of S-BSS operation "H" : using 73 "L" : using 78
- No using
O Output high voltage at muting
O Output high voltage at speaker cancelling (may be no using)
Description
"H" : without TV "L" : within TV