Pioneer KEH-1800, Service Manual

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34
KEH-1800,1830
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Pin Functions(PE5017B)
Pin No. Pin Name I/O Format Function and Operation
1,2 NC Not used
3 ADPW A/D converter power
4 GND GND
5,6 NC Not used
7 AVREF1 (Connect to VDD)
8 KYDT I Key data input
9 DPDT O C Display data output
10
dsens
I Grille detach sense input
11 TUNPDI I PLL IC data input
12 TUNPDO O C PLL IC data output
13 TUNPCK O C PLL IC clock output
14 TUNPCE O C PLL IC chip enable output
15-21 NC Not used
22
swvdd
O C Grille power supply control output
23 NC Not used
24 VDT O C Data output for electronic volume
25 VCK O C Clock output for electronic volume
26 VST O C Strobe pulse output for electronic volume
27 SYSPW O C System power supply control output
28
mute
O C System mute output
29 DMINH O C Mechanism mute cancel output
30–32 NC Not used
33 GND GND
34–37 NC Not used
38 FM O C FM power control output
39 AM O C AM power control output
40–49 NC Not used
50
eject
I Eject key input
51
tapld
I Tape loading input
52 MECPW O C Cassette mechanism power output
53
mcmut
I Mechanism mute input
54 NOR/
rev
I Normal reverse input
55-59 NC Not used
60
reset
I Reset input
61,62 NC Not used
63 CLKIN I Clock input
64
asens
I ACC power sense input
65
bsens
I Back up power sense input
66 SD I SD input
67
st
I FM stereo input
68 VDD Power supply
69 X2 Oscillator output
70 X1 Oscillator input
71 GND GND
72 NC Not used
73 TESTIN I Test program mode input
74 AVDD A/D converter analog power supply (VDD)
75 AVREF0 (A/D converter standard voltage input)
76 SL I Signal level input
77 MODEL I Model select input
78–80 NC Not used