Aiwa CR-LD120 Service Manual page 12

IC DESCRIPTION
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IC, µPD17934AGK-512
3 7 63 1515 0
Pin No. Pin Name
1 VADSEL
2 VADSEL2
3 AMIF
4 FMIF
5 VDD1
6 PLLREG
7 PLLOUT1
8 PLLOUT2
9 OSCL
10 OSCH
11 GND
12 TEST
13 RESET
14 STIN
15 E
16 V
17 W
18 ~ 19 NC
20 REQ
21 POUT
TE
L 13942296513
22 TUOUT
23 AMOUT
24 FMOUT
25 TVOUT
26 NSBOUT
27 TV/FMOUT
28 ~ 30 NC
31 BEEP
32 VDD0
33 ~ 34 CAP0 ~ CAP1
35 ~ 36 REG0 ~ REG1
37 ~ 38 CAP2 ~ CAP3
39 REG2
40 ~ 43 COM0 ~ COM3
44 ~ 59 LCD0 ~ LCD15
60 LCD16
61 BATSEL
62 TVSEL
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63 BASSSEL
64 NC
.
65 MUTEOUT
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I/O
I "H": Voltage detection at VDD=3.0V, "L": Voltage detection at VDD=1.5V. (Not used)
I Not used.
I Input IF counter.
I Input IF counter.
I Input power supply.
I Input PLL regulator. (Not used)
O Output PLL charge-pump. (Not used)
O Output PLL charge-pump.
I Input OSC low.
I Input OSC high.
– GND.
– Connected to GND.
I "L": System reset.
I "H": Stereo indicator turn on. (Not used)
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.
– Not connected.
O "H": IF output.
O Output high voltage at TUNER & TIMER & ALARM operating.
O Output high voltage at TUNER operating. (Not used)
O Output low voltage at TUNER operating AM band.
O Output low voltage at TUNER operating FM band. (Not used)
O Output low voltage at TUNER operating TV band.
O Output low voltage at TUNER operating NSB band. (Not used)
O Output low voltage at TUNER operating FM/TV band.
– Not connected.
O Output BEEP sound.
I Input power supply.
– Connect capacitor for LCD.
– LCD regulator.
– Connect capacitor for LCD.
– LCD regulator.
O LCD common.
O LCD segment.
O LCD segment. (Not used)
I Selection of voltage detection. "H": Using 76, "L": Using 78.
I Selection of TV. "H": Without TV, "L": Within TV.
I Selection of S-BASS operation. "H": Using 73, "L": Using 78. (Not used)
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– Not connected.
i
O Output high voltage at muting.
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8
Description
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