Pioneer VSX-908RDS Service Manual page 85

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Pin Function
No. Pin Name I/O
O/open (KU,J,SD), I/Fan temperature A/D
1 TEMP IN I/O
input (other)
2 A MUTE O Audio mute ON/OFF
3 DSP CS1 O Chip select for IC9501 DSP U-COM
4 DSP RST O Reset for IC9501 DSP U-COM
5 DSP MUTE I Mute request from IC9501 DSP U-COM
6 DSP CS2 I Chip select from IC9501 DSP U-COM
7 NC O Open
8 NC O Open
9 AMPOL I Amp Overload detect
10 RESET I Reset
11 NC O Open
12 NC O Open
−
13 GND GND
14 XIN I
Connect a 4.19MHz oscillator
15 XOUT O
−
16 VDD Power supply +5V
17 NC O Open
18 ST3 O Strobe for IC107 TC9163F control
19 CK2 O Clock for IC108 TC9482N control
20 CK3 O Clock for IC107 TC9163F control
21 DT3 O Data for IC107 TC9163F control
22 ST2 O Strobe for IC108 TC9482N control
23 W.UP I AC pulse input
24 DT2 O Data for IC108 TC9482N control
Clock for IC101 TC9274N and IC104
25 CK1 O
TC9163F control
Strobe for IC101 TC9274N and IC104
26 ST1 O
TC9163F control
Data for IC101 TC9274N and IC104 TC9163F
27 DT1 O
control
−
28 GND GND
29 NC O Open
30 NC O Open
31 NC O Open
I/O O/Open (KU,J,SD), I/Fan stop detecter (other)
32 FAN STOP
33 A RY O SP A relay ON/OFF
34 B RY O SP B relay ON/OFF
35 C/S RY O SP C/S relay ON/OFF
36 HP RY O Headphone relay ON/OFF
37 FAN LOW O Open (KU,J,SD), Fan low (other)
38 FAN DRIVE O Open (KU,J,SD), Fan drive (other)
39 AC RY O AC relay ON/OFF
40 NECK O Neck ON/OFF (24,26,908,938 only)
Function No.
41 MR MUTE
42 A MUTE2
43 LOUD
44 MR-V DT
45 MR-V CK
46 4052 INH
47 4052 B
48 4052 A
49 SIMUKE 3
50 SIMUKE 2
51 SIMUKE 1
52 SIMUKE 0
53 2296-2
54 2296-5
55 2296-3
56 2296-4
57 4051-C
58 4051-B
59 4051-A
60 2279-M
61 2279-2
62 2279-1
63 OSD RST
64 OSD CS
65 SYNC DET
66 DSP HCK
67 DSP HDI
68 DSP HDO
69 DISP CK
70 OSD CK
71 DISP DI
72 DISP DO
73 GND
74 VDD
75 DISP RDY
76 DISP RST
77 DSP OL
78 WATT IN
79 AMP OL
80 DC DET
VSX-908RDS, VSX-908RDS-G
Pin Name I/O
Audio mute ON/OFF for sub room (MR&S,
O
MR model only)
O Audio preout mute ON/OFF
O Loudness ON/OFF
Data for IC110 M62429FP control (MR&S
O
model only)
Clock for IC110 M62429FP control (MR&S
O
model only)
Inhibit for IC102 BU4052BCF control (MR&S
O
model only)
Control for IC102 BU4052BCF (MR&S model
O
only)
I SIMUKE (pull-up or down)
O Control for IC701, 801, 802 NJM2296M
O Control for IC831 BU4051BCF
Control for IC731 NJM2279M (MR&S model
O
only)
O Reset for IC752 LC74782M-9011
O Chip select for IC752 LC74782M-9011
I Detection of synchronizing signal
O Clock for IC9501 DSP U-COM
O Data for IC9501 DSP U-COM
I Data from IC9501 DSP U-COM
O Clock for IC7001 DISP U-COM
O Clock for IC752 LC74782M-9011
O Data for IC7001 DISP U-COM
I Data from IC7001 DISP U-COM
−
GND
−
Power supply +5V
I Data request from IC7001 DISP U-COM
O Reset for IC7001 DISP U-COM
I DSP overload detect, A/D input
O/Open (KU,J,SD), I/Fan wattage input, A/D
I/O
input (other)
I Amp overload detect, A/D input
I Detection of amp power error, A/D input
Function
85