Pioneer FX-MG8247ZT/ES, Service Manual

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FX-MG8247ZT/UC
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Pin Functions (PD5715B)
Pin No. Pin Name I/O Format Function and Operation
1 VDIN I Power supply short sensor input
2
doorsw
I Door open position SW input
3 NC Not used
4
bsrq
O C P-BUS service request output
5
clamp
I DISC clamp SW input
6
elhome
I ELV reset position SW input
7 XSCK O C CD LSI clock output
8 XSO O C CD LSI data output
9 XSI I CD LSI data input
10
xstb
O C CD LSI strobe output
11
xrst
O C CD LSI reset output
12 XA0 O C Control signal distinguishing data from microcomputer
13 VDCONT O C VD control output
14 NC Not used
15
bsens
I Back up power sense input
16 BRXEN I/O C P-BUS reception enable input/output
17
loadsw
I Loading position SW input
18
modesw
I ELV OK position SW input
19 BSCK I/O C P-BUS serial clock input/output
20 BSO O C P–BUS serial data output
21 BSI I P–BUS serial data input
22
brst
I P–BUS reset input
23 SBSY I Signal indicating head of subcode block
24 CNVSS I GND
25
reset
I Reset input
26 POWER O C Servo/Mechanism power supply control output
27 CONT O C Servo driver output control
28 Xin I Crystal oscillating element connection pin
29 Xout O C Crystal oscillating element connection pin
30 VSS GND
31–38 NC Not used
39 TESTIN I Chip check program mode input
40 DCLOSE I Door close sense input
41 WDSL O C Data comparison area specification signal output
42 XWIH I Data write inhibit input
43 XEMP I Data read inhibit input
44 CHDT I Data comparison mode monitor input
45 CHM0 O C Data comparison mode output 0
46 CHM1 O C Data comparison mode output 1
47–49 NC Not used
50 XWRE O C DRAM WRT ENBL
51 XRDE O C DRAM READ ENBL
52 XQOK O C SUB-Q OK output
53 EMPH O C DAC emphasis output
54 SCONT O C Mode select output
55 LOAD O C PHOT power supply control
56
cdmute
O C CD mute output
57 LO2 O C LOAD motor control terminal output 2
58 LO1 O C LOAD motor control terminal output 1
59 ELV2 O C ELV motor control terminal output 2
60 ELV1 O C ELV motor control terminal output 1
61 CG2 O C CAM motor control terminal output 2
62 CG1 O C CAM motor control terminal output 1
63 MIRR I CD LSI mirror detector input
64 LOCK I CD LSI spindle lock detector input
65 FOK I CD LSI FOK signal input
66–68 NC Not used
69
adena
O C A/D reference voltage output