Pioneer MEH-P7100R, Service Manual

Page: 81 / 88

81
MEH-P7100R,P7150
- Pin Functions(PD5541C)
Pin No. Pin Name I/O Format Function and Operation
1 RAM O C Remaining RAM capacity D/A output
2-5 NC Open
6 BYTE I VSS
7 CNVSS I VSS
8,9 NC O C Open
10
reset I
Resetting input
11 XOUT O Main clock oscillation pin
12 VSS GND
13 XIN I Main clock oscillation pin
14 VCC 5V
15 NC Not used
16 SQSY I DISC sub-code Q sink?/ADIP sink?
17
brst
I P-BUS resetting input
18 XINT I Decoder interrupting input
19 NC O C Open
20 SENSE I MD LSI SENSE output monitor
21-27 NC Open
28 XRST O C MD LSI resetting output
29 SWDT O C MD LSI IF data output
30 SRDT I MD LSI IF data input
31 SCLK I MD LSI IF clock output
32 XLAT O C MD LSI IF latch signal output
33 BSO O C P-BUS data output
34 BSI I P-BUS data input
35 BSCK I/O C P-BUS clock input/output
36 NC Open
37
bsrq
O C P-BUS serial pole request output
38 BRXEN I/O C Receivable I/O
39-42 NC Open
43 LDCNT O C Laser diode ON/OFF
44 VDON O C Power ON/OFF
45-50 NC Open
51 TESTIN I Test program mode input
52-59 NC O C Open
60 VCC 5V
61 CK I Clock signals
62 VSS GND
63-74 NC Open
75 MUTE O C Comprehensive mute output
76 CONT O C Servo-driver power control
77 MDLOAD O C Loading motor control output
78 MDEJECT O C Loading motor control output
79 LSW I Disc loading start signal input
80 CSW I Loading end signal input
81 ESW I EJECT end signal input
82 DISC I Reflectance discriminating signal input
83 HOME I C Home position detection input
84,85 NC Open
86 VDDSW O C SW VDD ON/OFF
87-92 NC Open
93 TEMP HIGH/LOW temperature detection input
94 AVSS A/D GND
95 VDSENSE VD power UP/DOWN sensing
96 VREF Reference voltage input for A/D converter
97 AVCC Analog power supply
98-100 NC Open