Pioneer CD-R1546ZH, Service Manual

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SCU-M2096ZH,CD-R1546ZH
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Pin Functions (PD4762A)
Pin No. Pin Name I/O Function and Operation
1,2 NC Not used
3 DPDT I Display data input
4 KYDT O Remote control data output
5 NC Not used
6 GND GND
7 X2 Crystal oscillator connection pin
8 X1 Crystal oscillator connection pin
9 VDD Power supply
10 TESTIN I Test program mode input
11 NC Not used
12 RESET I Reset input
13 RENIN I Remote control pulse input
14–18 NC Not used
19-22 KDT3-0 I Key data input
23–26 KST6-3 O Key strobe output
27 AVSS I A/D GND
28–30 KST2-0 O Key strobe output
31 VOLUP I Volume up input from encoder
32 VOLDN I Volume down input form encoder
33–35 NC Not used
36 AVDD Positive power supply terminal for analog circuit
37 AVREF A/D converter reference voltage
38,39 NC Not used
40 VSS GND
41–50 NC Not used
51-54 COM0-3 O LCD common output
55 BIAS LCD power supply
56–58 VLC0-2 LCD power supply
59 VSS GND
60 NC Not used
61–97 S37-1 O LCD segment output
98–100 NC Not used
*PD4762A
30
31
50
51 80
81
100
1