Pioneer KEH-P4800 Service Manual page 31

KEH-P4800,P4850
- Pin Functions(PD4973A)
Pin No. Pin Name
1 ASENBO
2 NC
3 ADPW
4 AVSS
swvdd
5
st
6
7 AVREF1
8 KYDT
9 DPDT
10 NC
11 TUNPDI
12 TUNPDO
13 TUNPCK
14 TUNPCE
15,16 NC
17 TX
18,19 NC
20 DIMMER
21 DRELAY
22 VST
23 VCK
24 VDT
25 LCDPW
26 ILMPW
27 DRSENS
28 DRSYS
29 FM
30 AM
31 CM
32 NC
33 VSS
34 SC2
35 SC1
36 MSIN
37 RIMUTE
mtlsw
38
dled
39
n/R
40
41 PLAY
loadsw
42
43 POS
44 RES
45 PEE
46 NES
47 NC
48 STBY
49–52 NC
53 SD
mute
54
55 SYSPW
56–59 NC
60 RESET
61 RX
62 NC
dsens
63
64 TELIN
asens
65
bsens
66
67 CLKIN
42
I/O Format Function and Operation
O C Slave power supply control output
Not used
O C A/D converter power output
GND
O C Grille power supply control output
I FM stereo input
D/A converter standard voltage
I Grille MicroComputer data input
O C Grille MicroComputer data output
Not used
I PLL IC data input
O C PLL IC data output
O C PLL IC clock output
O C PLL IC chip enable output
Not used
O C IP BUS data output
Not used
O C Dimmer select output
O C Detach alarm relay output
O C Strobe pulse output for electronic volume
O C Clock output for electronic volume
O C Data output for electronic volume
O C LCD back light power supply control output
O C Illumination power supply control output
I Door open/close sense input
O C Door system select output
O C FM power control output
O C AM power control output
O C Cassette mechanism capstan motor control output
Not used
GND
O C Cassette mechanism sub motor control output
O C Cassette mechanism sub motor control output
I Cassette mechanism MS sense input
O N RI output port
I Metal sense input
O N Alarm LED output
O C Normal reverse output
O C Tape MS filter select output
I Tape loading input
I Cassette mechanism position sense input
I Cassette mechanism reverse end sense input
O C Beep tone output
I Cassette mechanism forward end sense input
Not used
O C Stand-by output
Not used
I SD input
O C Mute output
O C System power supply control output
Not used
I Reset input
I IP BUS data input
Not used
I Grille detach sense input
I TEL mute signal input
I ACC power sense input
I Back up power sense input
I Clock input