Pioneer DEH-P76DH, Service Manual

Page: 61 / 82

61
DEH-P86DHR,P76DH
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Pin Functions (PD4623B)
Pin No. Pin Name I/O Format Function and Operation
1 NC Not used
2
xrst
O C CD LSI reset output
3,4 NC Not used
5 DCE O C Chip enable output
6
crst
O C IP-BUS reset output
7
home
Connect to VDD
8
clamp
I Disc clamp input
9 VSS GND
10 NC Not used
11 CDEJET O C Load motor eject control output
12 CDLOAD O C LOAD motor loading control output
13 CONT O C Servo driver power supply control
14 NC Not used
15 CDMUTE O C CD mute control output
16 DEEM Not used
17
adena
O C A/D reference voltage control output
18-23 NC Not used
24 VSS GND
25 DSET Not used
26 BMUTE Not used
27-30 NC Not used
31
brxen
I/O C Reception enable input/output
32
bsrq
I P-BUS serial pole request input
33 VDCONT O C VD power control outpur
34 CD5VON O C CD +5V power control output
35
reset
I Reset input
36 TXARI I VDD
37
csens
I Flap close sense input
38
brst
I P–BUS reset input
39 CMPARI I GND
40 VDD Power supply
41 X2 Crystal oscillator connection pin
42 X1 I Crystal oscillator connection pin
43 IC Connect to GND
44 NC Not used
45
testin
I Test program start input
46 AVSS I A/D GND
47 TEMP I Temperature sense input
48 VDSENS I VD short detection input
49 EJTSNS Disc EJECT position detect
50 DSCSNS I Disc detect
51 NC Not used
52 FOK I FOK signal input
53 MIRR I Mirror detection input
54 LOCK I Spindle lock detector input
55 AVDD Power supply
56 AVREF I A/D converter reference voltage
57 XSI I Serial data input
58 XSO O C Serial data output
59 XSCK O C Serial clock output
60
xstb
O C CD LSI strobe output
61 XA0 O Control signal distinguishing data from microcomputer
62 NC Not used
63 BDATA I/O C P–BUS serial data input/output
64
bsck
I/O C P-BUS serial clock input/output
Format Meaning
C C MOS